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52 results about "Atmospheric chemistry" patented technology
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Atmospheric chemistry is a branch of atmospheric science in which the chemistry of the Earth's atmosphere and that of other planets is studied. It is a multidisciplinary approach of research and draws on environmental chemistry, physics, meteorology, computer modeling, oceanography, geology and volcanology and other disciplines. Research is increasingly connected with other areas of study such as climatology.
Satellite-ground comprehensive monitoring quantitative remote sensing fusion processing method for atmospheric particulate matter
InactiveCN107202750AAvoid missingEfficient acquisitionParticle suspension analysisParticulatesObservation data
The invention discloses a satellite-ground comprehensive monitoring quantitative remote sensing fusion processing method for atmospheric particulate matters. The method mainly comprises the following steps: a, analyzing types or components of dust-haze aerosol particulates; b, on the basis of dust-haze aerosol particulate feature observation data of the Beijing-Tianjin-Hebei region and prior knowledge, improving a remote sensing inversion model, acquiring dust-haze optical thickness inversion near-ground PM2.5 concentration distribution; c, combining the dust-haze optical thickness inversion near-ground PM2.5 concentration distribution, pollutant ground observation data, climate and environment auxiliary information and dust-haze aerosol particulate type or component analysis to form comprehensive ground dust-haze data; d, combining the comprehensive ground dust-haze data in the step c with atmospheric chemical or air quality modes and satellite remote sensing and ground observation multi-source data, and achieving short-term forecasting of dust-haze pollution distribution. The satellite-ground comprehensive monitoring quantitative remote sensing fusion processing method for the atmospheric particulate matters, which is disclosed by the invention, has the advantages that acquired dust-haze data are relatively precise and high in reliability.
Owner:河北中科遥感信息技术有限公司 +1
System for modifying the atmosphere within an enclosed space and incubator system including the same
ActiveUS20080282653A1Increase and to decrease oxygen concentrationIncrease carbon dioxide concentrationCombination devicesSludge treatmentChemical compositionGas cylinder
System for modifying the chemical composition of atmosphere within an enclosed space and incubator system including such a system. The concentration of oxygen within the enclosed space may be either increased or decreased using an electrochemical device. The concentration of carbon dioxide within the enclosed space may be increased using an electrochemical or chemical device. As necessary, purging of the system with ambient air can be a part of the process of controlling the chemical composition of the atmosphere. The present invention obviates the need to use pressurized gas cylinders to supply atmospheric gases to the enclosed space.
Owner:GINER INC
Regional ozone pollution tracing system based on Lagrange trajectory mode and chemical box mode
ActiveCN110824110AAchieve couplingImprove the deficiencies in the applicationGas analyser construction detailsAir quality improvementLagrangian trajectoryOxygen contamination
The invention belongs to the technical field of environmental monitoring and relates to an atmospheric pollution tracing system. The system comprises an emission source input module used for inputtingemission data, an initialization module used for setting the initial concentration of pollutants, an atmospheric chemistry module used for simulating a chemical process in an air mass movement process according to the input emission data, an atmospheric physical module used for inputting meteorological parameters and simulating a physical process in the air mass movement process according to themeteorological parameters, and a result output module used for outputting the concentration of the pollutants and the rate of the atmospheric chemical reaction process, quantifying the contribution ofregion transmission and local generation to the O3 concentration of a target region, and quantifying the contribution of different chemical processes to the O3 concentration of the target region. According to the system, atmospheric physical and chemical processes are comprehensively considered, the evolution of the pollutant concentration and the chemical reaction rate of gas mass in the movement process in the space-time scale is restored, a discharge area causing ozone pollution in the target area is accurately located, a precursor and a discharge department are optimally controlled, and scientific support is provided for formulating the control measures of the ozone pollution in the target area.
Owner:SHANDONG UNIV
Aerosol foundation data-based AOD vertical correction effect evaluation method and system
InactiveCN106446307ASolution effect evaluationSolve the problem of selectivityParticle suspension analysisSpecial data processing applicationsCorrection methodScale effects
The invention provides an aerosol foundation data-based AOD (Aerosol Optical Depth) vertical correction effect evaluation method and system. The method comprises the steps of estimating a near-surface aerosol extinction coefficient and inverting the near-surface aerosol extinction coefficient based on observation data of a foundation visibility meter; inverting AOD based on observation data of a foundation sum photometer; inverting the near-surface aerosol extinction coefficient based on the visibility meter; performing vertical correction on the AOD based on a laser radar observation method or an atmospheric chemistry mode simulation method, and estimating the near-surface aerosol extinction coefficient according to a vertical correction result; and evaluating the effect and applicability of an AOD vertical correction method by comparing the difference between the estimated near-surface aerosol extinction coefficient with the inverted near-surface aerosol extinction coefficient. According to the method and the system, the errors caused by direct use of a satellite for AOD inversion and the evaluation uncertainty caused by a scale effect and the like can be avoided, so that the difficult problems in effect evaluation and applicability selection among various AOD vertical correction methods and various data sources are solved.
Owner:INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
On-line parameter identification method for jumping type reentry of lunar spacecraft
ActiveCN103708045AImprove robustnessHigh precisionSystems for re-entry to earthCosmonautic landing devicesLow-pass filterAtmospheric model
The invention discloses an on-line parameter identification method for jumping type reentry of a lunar spacecraft. The on-line parameter identification method comprises the steps of obtaining on-line estimation values of an atmospheric density scaling factor and a lift-drag ratio scaling factor through a low-pass filter at a primary reentry descending branch, executing track forecasting, correcting the deflection of a drop point, and constructing a fitting function relation between the atmospheric density scaling factor and the height; obtaining an atmospheric density scaling factor at a primary reentry ascending branch and in the initial stage of a secondary reentry branch via a constructed fitting function, estimating a lift-drag ratio scaling factor of the lunar spacecraft on line, executing track forecasting, and correcting the deflection of the drop point; estimating an atmospheric density scaling factor and a lift-drag ratio scaling factor in the later stage of the secondary reentry branch, executing track forecasting, and correcting the deflection of the drop point. According to the on-line parameter identification method, the robustness and the precision of a guidance algorithm are improved; the adaptability to a real atmosphere model is high.
Owner:NAT UNIV OF DEFENSE TECH
Method for observing and inverting surface carbon flux based on satellite CO2 column concentration
PendingCN111723482ACorrection errorDesign optimisation/simulationSpecial data processing applicationsCarbon assimilationObservation data
The invention discloses a method for observing and inverting surface carbon flux based on satellite CO2 column concentration. The method comprises the following steps: constructing an EnKF carbon fluxinversion system and coupling the EnKF carbon flux inversion system to an MOZART-4 global atmospheric chemical transmission model; performing Gaussian random disturbance on the priori CO2 flux to obtain a set sample, inputting the set sample into an atmospheric model MOZART-4 to simulate CO2 concentration, assimilating observation data of corresponding positions and time, and obtaining optimizedCO2 flux; inputting the optimized flux into the MOZART-4 model again for operation, and generating a new initial field for flux optimization of the next assimilation window; and repeating the step 2 for cyclic assimilation. The high-resolution carbon assimilation inversion system constructed through a new algorithm and a new program can directly assimilate satellite column concentration data, andglobal and regional carbon flux errors and simulation precision are effectively corrected.
Owner:NANJING UNIV
Method and apparatus for determining water content and moisture absorption mass increase rate of atmospheric particles
InactiveCN102749260AAids in obtaining hygroscopic propertiesWithdrawing sample devicesWeighing by absorbing componentParticulatesFiltration membrane
The invention relates to a method for determining water content and moisture absorption mass increase rate of atmospheric particles. The process comprises that: 1) an atmospheric sample passes through a filtration membrane, particles in the atmosphere are collected on the filtration membrane, and sampling is stopped after a predetermined time to obtain a sample membrane adsorbed with the atmospheric particles in a sampling time; 2) the sample membrane is subjected to dry gas purging, water content of the purged moisture is quantitatively determined; and 3) gases with different humidity are repeatedly introduced to the sample membrane to carry out moisture absorption culture, weights of the filtration membrane before and after moisture absorption are weighed, and mass increase rate of the atmospheric sample under different humidity conditions is calculated. The present invention further discloses an apparatus for performing the method. With the present invention, base data is provided for dust-haze formation mechanism, air quality, atmospheric chemistry model development research and the like, and important effects are provided for researches of cloud water chemistry and physics, artificial influence on weather, atmospheric radiation and climate, and the like.
Owner:INST OF ATMOSPHERIC PHYSICS CHINESE ACADEMY SCI
Single Wall Carbon Nanotubes By Atmospheric Chemical Vapor Deposition
The present disclosure provides for systems and methods for producing carbon nanotubes. More particularly, the present disclosure provides for improved systems and methods for producing single wall carbon nanotubes (SWNTs) by chemical vapor deposition (CVD) using a carbon source in the presence of a catalyst. In exemplary embodiments, the present disclosure provides for improved systems and methods for producing single wall carbon nanotubes (SWNTs) by chemical vapor deposition (CVD) using carbon monoxide (CO) disproportionation in the presence of a catalyst composition on a catalyst support material. In one embodiment, the present disclosure provides for systems and methods for producing single wall carbon nanotubes (SWNTs) by chemical vapor deposition (CVD) using carbon monoxide (CO) disproportionation with CO pressure from about 0.20 atm to about 1.0 atm in the presence of a cobalt / molybdenum catalyst composition on a magnesium oxide catalyst support.
Owner:NEW JERSEY INSTITUTE OF TECHNOLOGY
System for modifying the atmosphere within an enclosed space and incubator system including the same
ActiveUS8083821B2Reduce oxygen concentrationIncrease carbon dioxide concentrationCombination devicesSludge treatmentChemical compositionGas cylinder
System for modifying the chemical composition of atmosphere within an enclosed space and incubator system including such a system. The concentration of oxygen within the enclosed space may be either increased or decreased using an electrochemical device. The concentration of carbon dioxide within the enclosed space may be increased using an electrochemical or chemical device. As necessary, purging of the system with ambient air can be a part of the process of controlling the chemical composition of the atmosphere. The present invention obviates the need to use pressurized gas cylinders to supply atmospheric gases to the enclosed space.
Owner:GINER INC
Drought disastrous situation monitoring and emergency processing method based on unmanned aerial vehicle
The invention relates to a drought disastrous situation monitoring and emergency processing method based on an unmanned aerial vehicle. The method comprises the specific steps that (1) air temperature and air humidity are monitored in real time through the unmanned aerial vehicle and a microwave sounder placed on the unmanned aerial vehicle; (2) the amount of precipitation within a period of time in an area in the step (1) is monitored through a ground rain gauge; (3) by the combination of the monitored data, cruising is carried out on the area, where the preliminary drought phenomenon appears, in a low-altitude mode through the unmanned aerial vehicle, and images are obtained; (4) emergency processing is carried out on the area, where the preliminary drought phenomenon appears, in the step (3) through the unmanned aerial vehicle; by the adoption of the technical scheme, according to the drought disastrous situation monitoring and emergency processing method based on the unmanned aerial vehicle, the atmospheric humidity is monitored in real time through the unmanned aerial vehicle, and the monitoring of the atmospheric humidity is combined with measurement of the amount of precipitation, so that the climatic trend inside the area where the drought phenomenon is likely to occur is judged, and then the drought phenomenon which is likely to occur is found earlier.
Owner:恒创数字科技(江苏)有限公司
Short-time atmosphere model modification method based on measured atmospheric density
InactiveCN107132155AImproving Orbit Forecast AccuracySpecific gravity measurementModel modificationDensity model
The invention provides a short-time atmosphere model modification method based on measured atmospheric density. The method comprises the following steps: selecting an atmosphere density model, and collecting and calculating measured atmospheric density in a set duration; respectively performing linear fitting on the density value of the atmosphere model and the measured density value so as to obtain a measured atmospheric density fitted curve and a model density fitted curve; calculating an included angle between the measured atmospheric density fitted curve and the model density fitted curve; and rotating the model density fitted curve point by point, thereby obtaining a time value t' after rotation and a selected atmosphere model density value after rotation. According to the method disclosed by the invention, the measured atmospheric density value is introduced into orbit calculation, and the spacecraft orbit forecast accuracy is well improved.
Owner:CHINA XIAN SATELLITE CONTROL CENT
Ozone leading precursor recognition method and device, electronic equipment and storage medium
InactiveCN112214913AComprehensive consideration of chemical reactionsCalculation speedData processing applicationsDrawing from basic elementsChemical reactionEnvironmental engineering
The invention provides an ozone dominant precursor recognition method and device, electronic equipment and a storage medium. The method comprises the steps: acquiring meteorological field data and pollutant concentration simulation data of a target area in a preset time period; determining a plurality of precursor concentration combination scenes according to the meteorological field data and thepollutant concentration simulation data; and according to the multiple precursor concentration combination scenes, identifying precursor pollutants which play a leading role in ozone generation in thetarget area within a preset time period. Ozone generation is simulated through an atmospheric chemical box mode, chemical reactions are considered more comprehensively, the calculation speed is high,calculation resources are saved, and precursor pollutants playing a leading role are rapidly recognized. An ozone isoconcentration curve is drawn to visually reflect the relationship between ozone and precursors thereof, the change condition of ozone concentration under the condition that the concentrations of the precursors in different proportions are reduced is simulated, and a powerful support is provided for ozone pollution control decisions.
Owner:3CLEAR SCI & TECH CO LTD
Supercontinuum light source-based atmospheric multi-component laser occultation detection device
ActiveCN109632704AEasy to tuneImprove stabilityColor/spectral properties measurementsTuned radio frequency receiverBeam splitter
The invention relates to a supercontinuum light source-based atmospheric multi-component laser occultation detection device. A supercontinuum laser source is utilized to generate mid-infrared supercontinuum laser signals capable of covering a plurality of atmospheric component characteristic absorption lines, and the concentration of various gas components in the atmosphere is measured with an occultation laser detection and heterodyne receiving mode; the device includes a power stabilization circuit, a supercontinuum laser light source, a first beam splitter, an energy monitoring module, an optical transmitting antenna, an optical receiving antenna, an optical fiber switch, a second beam splitter, a frequency control circuit, a local oscillation laser array, a combiner array, a photodetector array, a radio frequency receiver array, a lock-in amplifier array, and a data processing module. The device has broad application prospects in global climate and environmental change field, atmospheric chemistry field and the like.
Owner:SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
Atmospheric pollution simulation and prediction algorithm with added methane chemistry and natural source discharging
PendingCN108182343AThe effect of increasing the average annual concentrationChemical processes analysis/designSpecial data processing applicationsNatural sourcePrediction algorithms
The invention discloses a mid-scale atmospheric photochemistry pollution simulation and prediction algorithm with added methane chemistry changes. Based on a CALGRID chemistry mode, influences of atmospheric chemistry reaction, atmosphere conveying and diffusing, settling, a ground surface source and an elevation discharging source are considered, and an OH free radical and CH4 are used as variables on the basis; natural source discharging of methane is considered, a chemical reaction of the OH free radical and the methane (CH4) is introduced, and the concentration changes of the OH free radical and the CH4 are calculated according to a chemical reaction list of the OH free radical and CH4. In the algorithm, an air quality mode is utilized for simulating the space-time distribution of theOH free radical and the CH4, in this way, the atmosphere oxidation capacity of a simulated region is easily learned about, and details of the photochemical reaction are easily and deeply learned about.
Owner:NANJING UNIV
Ozone leading precursor recognition method and device based on emission data
InactiveCN112348388AFacilitate clear control strategyComprehensive chemical reactionDrawing from basic elementsResourcesChemical reactionField data
The invention provides an ozone leading precursor recognition method and device based on emission data. The method comprises the steps of acquiring meteorological field data of a target area in a preset time period and emission data of an ozone precursor; determining a plurality of precursor discharge combination scenes according to the meteorological field data and the discharge data of the ozoneprecursor; and identifying precursor pollutants which play a leading role in ozone generation according to the plurality of precursor emission combination scenes. According to meteorological field data and ozone precursor emission data, ozone generation is simulated through an atmospheric chemical box mode, chemical reactions are considered more comprehensively, the calculation speed is high, andcalculation resources are saved. Precursor pollutants playing a leading role can be rapidly identified. The relations between ozone and precursors of ozone are visually reflected by drawing an ozoneisoconcentration curve, the change condition of ozone concentration under the condition that precursors of different proportions are discharged and reduced is simulated, and powerful support is provided for ozone control decision making.
Owner:3CLEAR SCI & TECH CO LTD
Air pollution simulation prediction algorithm for adding liquid phase chemical and wet deposition processes
PendingCN108229092AChemical processes analysis/designSpecial data processing applicationsChemical reactionPrediction algorithms
The invention discloses an air pollution simulation prediction algorithm for adding liquid phase chemical and wet deposition processes. According to the algorithm, based on a chemical mode of CALGRID,on the premise that the atmospheric chemistry reaction, atmospheric transport and diffusion, sedimentation and influence of a ground surface source and an overhead emission source are considered, pollutant concentration change items caused by the liquid phase chemical and wet deposition process continue to be introduced, and CALGRID in the cloud and rain chemical process is added; common primarypollutants such as SO2, NO2, PM10 and PM2.5 and common secondary pollutants such as sulfate, nitrate, ammonium salt, black carbon and organic carbon are well simulated, and the wet deposition amount of S and N is also well simulated. The improved CALGRID mode has high resolution and high timeliness, a response relation between a source and a receptor can be conveniently and quickly given, and theresult is reliable.
Owner:NANJING UNIV
Double-optical-comb atmospheric component detection device based on transmitting and receiving separation of high-orbit satellite platform
ActiveCN111982848AImprove stabilityHigh-resolutionMaterial analysis by optical meansICT adaptationFrequency stabilizationContinuous measurement
The invention relates to a double-optical-comb atmospheric component detection device based on transmitting and receiving separation of a high-orbit satellite platform. The device comprises an opticalcomb I, a beam splitter I, an energy monitoring module I, a collimation module I, an optical transmitting telescope, a pointing control module I, a pointing control module II, an optical receiving telescope, a collimation module II, an optical comb II, a beam splitter II, an energy monitoring module II, a collimation module III, a beam combiner, a photoelectric detector module, a radio frequencyanalysis module and a data acquisition and analysis module. According to the invention, a double-optical-comb mode with separated receiving and transmitting is adopted, and the frequency comb teeth ofthe optical comb are fixed at intervals, so that the requirement on the frequency stability of the light source is greatly reduced, and the frequency difference can be flexibly adjusted by adjustingthe optical comb on the ground as required. Column concentration high-precision continuous measurement of specific atmospheric components (such as greenhouse gas or pollution gas) in a plurality of site areas at daytime and at night can be realized, and the device has a wide application prospect in the fields of regional climate research, environmental monitoring, atmospheric chemistry research and the like.
Owner:SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
Ozone source analysis method and device based on observation data
InactiveCN112362816AQuick identificationFacilitate clear control strategyMaterial analysisChemical reactionObservation data
The invention provides an ozone source analysis method and device based on observation data. The method comprises the steps: acquiring meteorological field data and pollutant observation data of a target area in a preset time period; performing abnormal value elimination processing and missing value restoration processing on the pollutant observation data; determining a plurality of precursor concentration combination scenes according to the meteorological field data and the processed pollutant observation data; and identifying precursor pollutants which play a leading role in the generation of ozone according to the plurality of precursor concentration combination scenes. The quality of pollutant observation data is strictly controlled, and the time continuity of the pollutant observationdata is guaranteed. Ozone generation is simulated through an atmospheric chemical box mode, chemical reactions are considered more comprehensively, the calculation speed is high, and calculation resources are saved. The precursor pollutants playing a leading role can be rapidly recognized, the optimal control proportion of each precursor is quantitatively calculated, the control strategy of the precursors can be conveniently determined, and data support is provided for ozone control.
Owner:3CLEAR SCI & TECH CO LTD
Gaseous pollutant concentration column conversion method and device
ActiveCN109799549AImprove forecasting efficiencyGood application effectMaterial analysisText fileChemical models
The invention relates to a gaseous pollutant concentration column conversion method and device and belongs to the technical field of environmental pollution monitoring. The method herein comprises: acquiring four-dimensional lattice data prediction results of physical quantity through model prediction, screening the four-dimensional lattice data prediction results to obtain preset gaseous pollutant concentration four-dimensional lattice prediction results, acquiring preset gaseous pollutant concentration text files of preset layers through processing of a meteorological plotting system according to the preset gaseous pollutant concentration four-dimensional lattice prediction results, converting model layer data into column concentrations according to a sum method by using the layerwise text files as an input field so as to obtain tropospheric ozone column concentrations. The model ozone concentrations can be converted into tropospheric ozone column concentrations by converting; the ozone concentrations are decreased from four dimensions to three dimensions; physical significance of the ozone column concentrations is further clarified; tropospheric ozone concentrations in an atmospheric chemical model can be predicted more efficiently; application effect in scientific research and business units in environmental protection and meteorological industries can be improved.
Owner:中国气象局沈阳大气环境研究所
Method and device for determining pollutant discharge amount of coal-fired power plant
The embodiment of the invention provides a method and device for determining the pollutant discharge amount of a coal-fired power plant, relates to the field of atmospheric pollution monitoring and control, and can determine the optimal discharge amount of pollutants of the coal-fired power plant in combination with meteorological data, topographic data and the concentration condition of PM2.5. The method comprises the steps: acquiring pollutant emission parameters of a coal-fired power plant and meteorological data and topographic data of a preset region; updating a pre-stored pollutant emission source list according to the pollutant emission parameters; calculating an atmospheric PM2.5 concentration simulation value of the preset region according to the pollutant emission source list, the meteorological data and the topographic data and an atmospheric chemical transmission model; judging whether the atmospheric PM2.5 concentration analog value is greater than a preset concentration value or not; when it is determined that the atmospheric PM2.5 concentration simulation value is larger than a preset concentration value, updating the pollutant discharge amount according to a presetrule; when it is determined that the atmospheric PM2.5 concentration simulation value is smaller than or equal to the preset concentration value, outputting the pollutant discharge amount.
Owner:NAT INST OF CLEAN AND LOW CARBON ENERGY
High-temporal-spatial-resolution CO2 flux inversion system and method
ActiveCN114724647AImprove the simulation effectAddress underestimationChemical property predictionTechnology managementImage resolutionAtmospheric sciences
The invention discloses a high temporal-spatial resolution CO2 flux inversion system and method, and the system comprises an input module, an emission source diagnosis module, an atmospheric chemical transmission mode, an ensemble square root filtering assimilation unit, and is characterized in that an emission source diagnosis model is established according to a prior flux, an ensemble forecast CO2 concentration field and an ensemble average analysis field of CO2 flux at the same time every day in the previous M-1 days; an ensemble forecast flux is obtained; taking the ensemble forecast flux and the CO2 ensemble concentration analysis field as input fields of an atmospheric chemical transmission mode to obtain a CO2 ensemble concentration forecast field; the CO2 ensemble concentration forecast field, the CO2 ensemble flux forecast field, the observation variables and the CO2 ensemble concentration forecast field on the observation station are input into the ensemble square root filtering assimilation model for inversion, the method is high in estimation precision, the problem of underestimation of a prior source is effectively solved, and meanwhile, the flux uncertainty is reduced.
Owner:NANJING UNIV +2
Target spectral telemetry device and method for distance-resolved vehicle-borne pollutant gas
The invention discloses a vehicle-mounted target spectral remote-sensing device and method for the range resolution of pollutant gas. The device comprises a light guiding system, a monochrometer, a CCD (Charge Coupled Device) detector and a computer, wherein the light guiding system is driven by a stepping motor and an azimuth adjustment motor and provided with a spyglass which is parallelly collimated with the light guiding system. By using the method and device disclosed by the invention, the rapid and multi-component remote-sensing on the horizontal and vertical distribution situations of lower pollutant gas can be realized on a vehicle movable platform based on range resolution. The device and method disclosed by the invention can be applied to atmospheric chemical research, and provide input data for atmospheric chemical models.
Owner:ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
Terahertz self-feedback system for detecting hazardous chemicals in atmosphere
The invention relates to a terahertz self-feedback system for detecting hazardous chemicals in atmosphere. The system comprises a detection device, a mechanical adjusting device, a processor and a movable carrying device; the detection device is used for detecting kind and concentration information of hazardous chemicals in atmosphere; the mechanical adjusting device is used for adjusting positionof the detection device; the processer is used for processing kind and concentration information of the hazardous chemicals in atmosphere which are detected by the detection device, and controlling the mechanical adjusting device and the movable carrying device, and the movable carrying device is used for carrying movement of the hazardous chemicals in atmosphere of the system for detecting hazardous chemicals in atmosphere in a space; one end of the mechanical adjusting device is connected to the carrying device, and the other end is connected to the detection device. The self-feedback system has the advantages of high adjustability of detection positions, high intentionality of detection space coordinates, and low repetition rate.
Owner:TSINGHUA UNIV
Sulfur dioxide emission source optimization method based on mode initial field assimilation
ActiveCN111353634AReduce uncertaintyImproving the level of model forecastingForecastingDesign optimisation/simulationSoil scienceObservation data
The invention discloses a sulfur dioxide emission source optimization method based on mode initial field assimilation, and belongs to the field of atmospheric pollution numerical simulation, and the method comprises the following steps: 1, obtaining sulfur dioxide ground observation data, meteorological observation data, meteorological reanalysis grid point data and an emission source counted by abottom-to-top method; 2, assimilating the sulfur dioxide ground observation data based on an atmospheric chemical mode and a three-dimensional variational (3Dvar) assimilation method to obtain an optimal sulfur dioxide concentration field and a sulfur dioxide prediction error; and 3, converting the sulfur dioxide prediction error into a sulfur dioxide emission source error so as to obtain an optimal sulfur dioxide emission source, and verifying the optimal sulfur dioxide emission source.
Owner:NAT UNIV OF DEFENSE TECH
Medium and low altitude air composition limb detecting method
InactiveCN101419160BContinuous detectionHigh sensitivityColor/spectral properties measurementsChemical compositionAlbedo
The invention relates to atmospheric physical sounding, in particular to a limb sounding method for low-to-medium altitude atmospheric compositions. An imaging spectrometer is carried through an airship platform with a stepping motor; a ground computer system remotely controls the imaging spectrometer through wireless communication to perform continuous or discontinuous atmosphere acquisition in horizontal direction or vertical direction according to the resident height of an airship, scatter the light backward and image after the airship rises to a height for sounding target atmosphere; and a spectral signal after the imaging is stored to the ground computer system through wireless transmission further to obtain atmospheric chemical compositions within the sounding range through spectraldata analysis and treatment. The method can reduce the influence of surface albedo on the section inversion of the atmospheric compositions, improve the surface coverage range in the horizontal surface and the resolution in vertical direction, can also flexibly select the height range of section sounding of the atmospheric compositions, and realize continuous, large-area, and high-accuracy sounding of sections of the atmospheric compositions.
Owner:JILIN UNIV
Method for extracting atmospheric density based on SWARM-C satellite
ActiveCN109765141AEasy to handleThe extraction result is accurateSatellite radio beaconingSpecific gravity measurementDamping factorAccelerometer data
The invention discloses a method for extracting atmospheric density based on a SWARM-C satellite. Accelerometer data and GPS orbit data of the SAWRM-C satellite are obtained and then subjected to resampling and coordinate conversion; then a peak signal and a step signal in the accelerometer data are then removed; the accelerometer data are calibrated after data check is finished, deviation coefficient, proportional coefficient, and temperature coefficient in a calibration formula are estimated by a generalized least square method to obtain calibrated accelerometer data; then illuminating radiation pressure of a satellite received on an operating orbit of the satellite is subjected to modeling, and the acceleration caused by the illuminating radiation pressure is calculated, and the calibrated accelerometer data subtracts acceleration caused by the illuminating radiation pressure to obtain atmospheric drag acceleration; and in the end a product of damping coefficient of satellite operating in the orbit of the satellite and the effective area is calculated, and atmospheric density near the satellite orbit is calculated based on the atmospheric drag acceleration and the product of thedamping coefficient and the effective area.
Owner:UNIV OF ELECTRONIC SCI & TECH OF CHINA
A method for ozone source apportionment based on observational data and chemical mechanism
ActiveCN110057983BEasy to operateStrong timelinessAir quality improvementMaterial analysisSoil scienceChemical reaction
The invention discloses an ozone source analysis method based on observation data and chemical mechanisms, which belongs to the field of environmental air detection technology; specifically, it is an ozone source analysis method based on ozone precursor observation data and atmospheric chemical reaction mechanisms. This method first measures the concentration of VOCs in the ambient air, and obtains the NOx, O 3 concentration and meteorological data; then use the atmospheric chemical reaction box model to calculate O 3 Generation rate, screen adaptive atmospheric chemical reaction mechanisms and conduct ozone generation sensitive factor analysis; perform source analysis of sensitive precursors for ozone generation based on sensitivity analysis, and finally couple the atmospheric chemical reaction box based on the source analysis results of sensitive precursors Formula model analysis O 3 Source; established new methods and opened up new ideas for source analysis and chemical behavior research of ozone in the environment. This method has important scientific significance and important practical promotion and application value.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Mesoscale atmospheric photochemistry pollution simulation and prediction algorithm for increasing methane chemokinesis
PendingCN108121892AChemical property predictionSpecial data processing applicationsPrediction algorithmsChemical reaction
The invention discloses a mesoscale atmospheric photochemistry pollution simulation and prediction algorithm for increasing methane chemokinesis. Based on a CALGRID chemical mode, the influences of atmospheric chemical reactions, atmospheric transportation and dispersion, settling, ground surface sources and elevated emission sources are considered, the average quantity of the physical quantity inoriginal concentration of chemical species is decomposed into the pulsating quantity, on this basis, OH free radicals and CH4 serve as variables, a chemical reaction of the OH free radicals and methane (CH4) is introduced, and the concentration change of the OH free radicals and CH4 is calculated according to a chemical reaction list of the OH free radicals and CH4. By means of the mesoscale atmospheric photochemistry pollution simulation and prediction algorithm for increasing the methane chemokinesis, an air quality mode is utilized to simulate spatial and temporal distribution of the OH free radicals and CH4, which is beneficial to knowing of the atmospheric oxidation capability of a simulation area and deep knowing of details of a photochemical reaction.
Owner:NANJING UNIV
Atmospheric pollution area joint prevention and joint control degree policy assessment method
PendingCN114118662ATechnology managementResourcesEnvironmental resource managementEmission inventory
The invention provides an atmospheric pollution area joint prevention and joint control degree policy assessment method, which comprises an assessment method based on a bottom-up model, and the assessment method based on the bottom-up model comprises the following steps: A1, based on a bottom-up emission list accounting method, calculating the change of an activity level or an emission factor after policy measures are implemented; calculating the change of pollutant emission reduction; and A2, determining a coupling atmospheric chemical transmission model according to the change of the activity level or the emission factor in the step A1, wherein the coupling atmospheric chemical transmission model is used for simulating the change of the air pollutant concentration or the air quality improvement effect caused by policy implementation. The beneficial effects of the invention are that the atmospheric pollution area joint prevention and joint control degree policy assessment method of the assessment model solves the following problems: the regional joint law enforcement system is not implemented in place, the cross-regional cooperation mechanism is relatively loose, and the cross-regional long-acting compensation mechanism is not established.
Owner:TIANJIN UNIV
Inversion method and system for aerosol optical depth
Owner:INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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