39 results about "Atmospheric composition" patented technology

The invention relates to the technical field of environment monitoring and atmospheric component source analysis, in particular to a method and system for quantitatively evaluating greenhouse gas source contribution. The method comprises the following steps: extracting background concentration and calculating abnormal quantity through robust local weighted regression based on station hourly greenhouse gas concentration data; combining the abnormal quantity with meteorological data, calculating a comprehensive event score, performing event layering, and identifying a strong event window; a backward trajectory is calculated for the strong event hours, and normalized spatial weight distribution is generated; according to the distribution, the observation abnormal quantity is segmented into a local contribution part and an external contribution part according to a mass conservation principle; and the source industry influencing the observation concentration can be judged according to the diagnosis ratio of the characteristic species in the sampling data. According to the method, the quantitative and auditing separation of a concentration increment source can be realized under the condition of not depending on a complex model and strong prior, and the precision, the robustness, the interpretability and the cross-site comparability of a traceability result are effectively improved.

The invention discloses a planetary atmospheric trace gas spectrum telemetering and in-situ fusion detection system and method, and belongs to the technical field of deep space exploration. The detection system has a telemetering mode and an in-situ detection mode, and comprises a telescope module, a laser light source module, a heterodyne spectrum telemetering module, an in-situ absorption spectrum module, a gas sampling and enriching module and a signal acquisition, processing and control module. In the on-orbit stage, a heterodyne spectrum telemetering module is adopted, and a laser light source and sunlight signals are subjected to frequency mixing for atmospheric component telemetering; and after the detector enters an atmospheric descending section, the in-situ absorption spectrum module performs in-situ absorption spectrum measurement by utilizing the detection light of the same laser light source. By performing space-time fusion and joint inversion on the data acquired in the two modes, coherent detection from large-range general survey to fixed-point detailed survey is realized, the problems of load separation of telemetering and in-situ detection and difficulty in data fusion are solved, and the detection efficiency, the data consistency and the integration level of the system are greatly improved.

The invention provides an atmospheric composition observation system for a high-humidity atmospheric environment, and relates to the technical field of atmospheric composition detection equipment. The device comprises a heat preservation machine box, and a heat preservation door is installed at the open end of the heat preservation machine box; the dry carrier gas manufacturing unit is mounted in the heat preservation case; the sample gas drying unit is installed in the heat preservation case and communicated with the dry carrier gas outlet end of the dry carrier gas manufacturing unit, and sample gas in the sample gas drying unit is dried through dry carrier gas; and the atmospheric component analysis unit is mounted in the heat preservation case and is communicated with the dried sample gas exhaust end of the sample gas drying unit and the interior of the heat preservation case. On the whole, the structure is simple, dry air can be utilized, the observation cost can be reduced, and the purpose of continuous observation can be achieved.

This invention discloses a method and system for intelligent weather image acquisition and recognition, specifically relating to the field of weather image recognition technology. It involves continuous polarization imaging of the sky region while simultaneously acquiring spatial attitude and temporal information; preprocessing the polarization image data and extracting Stokes parameters to obtain standardized sky polarization light field data; then using a theoretical Rayleigh scattering model to analyze the polarization degree distribution pattern at different wavelengths to obtain theoretical sky polarization pattern characteristics; based on the polarization light field data, identifying the spatial distribution of actual clouds, aerosols, and haze in the sky to form actual atmospheric composition distribution characteristics; extracting anomalous polarization regions through difference analysis between theoretical and actual characteristics, and accurately classifying halo polarization anomalies and scattering polarization anomalies based on geometric and spectral characteristics; generating ultralocal weather change early warning signals based on the classification results; thus improving the accuracy and real-time performance of early warnings for ultralocal anomalous weather phenomena.

The invention relates to the technical field of gas detection sensors, in particular to an atmospheric composition detection sensor, an air passage is arranged in the sensor, an ionization inner space is arranged on a road through which detection gas must pass, the detection gas can not be influenced to enter and exhaust, ozone ions in the ionization inner space are exhausted along with the detection gas, and the detection gas is not influenced. The ionization effect is further improved; detection gas introduced into the gas passage can be basically ionized, so that the amount of ionized gas in the same time is larger, more positively charged ions are obtained through ionization, electric signals obtained through ionization are stronger, the response sensitivity of the sensor is high, result data accord with the actual concentration of the detected gas, and the detection result is more accurate.

A dispersion gating-based atmospheric composition measurement laser radar. The atmospheric composition measurement laser radar stretches a femtosecond laser into a broad pulse laser in a time domain by means of dispersion. A femtosecond spectrum is mapped into the broadened laser pulse due to the group velocity dispersion, and then is subjected to time domain gating by means of an intensity modulator (22, 26) for completing the selection of a laser of a preset wavelength. The laser wavelength scanning is achieved by adjusting the delay of an electrical drive signal of the intensity modulator (22, 26). An absorption spectrum of a specific atmospheric composition is obtained by means of laser wavelength scanning so as to measure the concentration of the atmospheric gas composition. The atmospheric composition measurement laser radar can precisely perform free gating on the wavelength where the laser emits, and has high precision in selecting the wavelength. Scanning and detection of a plurality of gases can be achieved by adjusting the center wavelength of a filter.

This invention relates to the fields of atmospheric physics and remote sensing, and particularly to a method and system for obtaining upward atmospheric transmittance in the infrared absorption band. The method includes: directly measuring solar spectral data from the ground; simultaneously measuring atmospheric composition profiles in the directions of the sun and satellite; calculating the downlink measured transmittance based on the measured data; calculating the downlink and uplink theoretical transmittance based on the profiles using a radiative transfer model; comparing the downlink measured and theoretical transmittance to verify errors; calculating a correction coefficient based on the uplink and downlink theoretical transmittance; and using this correction coefficient to correct the downlink measured transmittance to obtain the final uplink atmospheric transmittance. The system includes spectral measurement, profile measurement, and data processing units for implementing the above method. This invention combines the high precision of direct measurement with the physical extrapolation capability of theoretical models, solving the problem of obtaining high-precision uplink atmospheric transmittance and providing a reliable technical solution for satellite remote sensing calibration.

The invention relates to an atmospheric composition detector which is characterized in that under the excitation of detection gas molecules in an ionization inner space by an ultraviolet light generator in a gas sensor module, pollutant detection gas molecules in the ionization inner space are ionized into charged particles, and the charged particles can be detected by a signal detection part; under the action of the air pump, air can continuously enter the gas sensor module to be detected, the stable state of the air pressure of the air entering the gas sensor module is guaranteed, the air entering the gas channel of the sensor module can be discharged only after passing through the ionization inner space, more air participates in the ionization process, and the ionization efficiency is improved. Compared with the prior art, the method has the advantages that the scale of charged particles is increased, the semaphore is larger, and the signal-to-noise ratio is better under the condition that the ground noise is kept unchanged, so that more effective detection sensitivity is provided, the method better conforms to the external air concentration, stable air pressure ensures that ionized signals cannot deviate from the actual pollutant concentration condition due to air pressure fluctuation, and the detection quality is higher.

The embodiment of the invention provides an intelligent AR inspection system for atmospheric component observation, relates to the technical field of artificial intelligence, and aims to accurately identify the direct influence of an environmental event on equipment by comprehensively analyzing an environmental event image, pollutant concentration data and correlation indexes in combination with equipment operation parameters so as to improve the inspection efficiency. Non-abnormal states caused by external environment disturbance and true anomalies caused by equipment faults are effectively distinguished, and corresponding emergency response strategies and maintenance reports can be automatically generated according to different risk levels, so that the accuracy and the intelligent level of an environment monitoring system are greatly improved.

The invention belongs to the related technical field of climate and environmental science, and particularly relates to a method for determining the influence of a climate geographic grid on global atmospheric component variables, which comprises the following steps of: constructing global climate mean time sequence data; performing signal decomposition on the global climate mean time sequence data and the global variable time sequence data to obtain a first target sequence and a second target sequence; determining the optimal time delay between the two sequences, aligning the two sequences and carrying out linear fitting, and taking a fitting quadratic term as a fitting sequence of a second target sequence; respectively calculating a first variance of an original second target sequence and a second variance of the fitting sequence; sequentially neglecting each climate grid, updating the fitting sequence and the second variance after each grid is neglected, and taking the permillage of the difference value of the two second variances before and after updating and the first variance as the coupling expressive force of the neglected grid to the second target sequence.

The application discloses an extraterrestrial body surface environment comprehensive simulation device, and relates to the field of extraterrestrial body surface environment simulation.The device comprises a vacuum cavity, which can simulate the vacuum environment or the atmospheric composition of the extraterrestrial body surface after being vacuumized or filled with a specific atmosphere.The vacuum cavity is provided with an extension interface, an observation window and a reserved interface on the side wall or other preferred positions, and a pulsed laser deposition system and other equipment are incident from the reserved interface or the observation window to simulate the space weathering process represented by micro-meteorite impact; a temperature control system is used to adjust the temperature of a loading platform to a temperature value required for simulating the high-temperature and low-temperature environment of the extraterrestrial body surface; the observation window is used to observe the test sample in the simulation process, and the reserved interface is connected with a characterization instrument to obtain the change of the related characteristics of the test sample in situ.The application can simulate and truly reflect the extraterrestrial body surface environment and the space weathering modification effect, and can be used for in-situ characterization, thereby providing reliable ground verification and prediction for the difficulties and challenges that may be faced by a deep space exploration task.

This invention relates to the field of environmental monitoring and atmospheric composition source apportionment technology, specifically a method and system for quantitatively assessing the contribution of greenhouse gas sources. The method includes: extracting background concentrations and calculating anomalies based on hourly greenhouse gas concentration data from various stations using robust local weighted regression; combining anomalies with meteorological data to calculate a comprehensive event score and perform event stratification to identify strong event windows; calculating backward trajectories for strong event hours to generate a normalized spatial weight distribution; dividing observed anomalies into local and external contribution components according to the mass conservation principle based on this distribution; and further determining the source industries affecting observed concentrations based on the diagnostic ratios of characteristic species in the sampled data. This invention enables quantitative and auditable separation of the sources of concentration increments without relying on complex models and strong priors, effectively improving the accuracy, robustness, interpretability, and cross-site comparability of source tracing results.

The utility model discloses an unmanned aerial vehicle airborne atmospheric composition detection module which comprises an unmanned aerial vehicle body, an unmanned aerial vehicle airborne assembly is arranged at the bottom of the unmanned aerial vehicle body, an atmospheric composition detection assembly is arranged in the unmanned aerial vehicle airborne assembly, and an unmanned aerial vehicle protection assembly is arranged on the periphery of the unmanned aerial vehicle body. According to the utility model, the prior art is improved, and in actual use, through the unmanned aerial vehicle airborne assembly and the atmospheric component detection assembly, the problems that the detection height is limited and the detection cost is low when atmospheric pollution components are detected by adopting a fixed-point environmental monitoring base station in most of domestic areas at present are solved. And the pollution emission source exceeding the height limit value cannot be accurately positioned and detected. Pollutants exceeding the height of the vehicle body can be monitored.

The utility model discloses an atmospheric pollution control, prevention and detection device capable of performing temporary treatment, and relates to the technical field of atmospheric prevention and detection equipment. The atmospheric pollution control, prevention and detection device capable of being temporarily treated comprises a mobile vehicle, and further comprises an air sampling assembly arranged right above the mobile vehicle and used for extracting nearby polluted atmosphere; the monitoring assembly is arranged at the bottom end of the air sampling assembly, and the monitoring assembly is used for monitoring the atmosphere pumped by the air sampling assembly; the air processing assembly is arranged on the surface of the bottom of the monitoring assembly, the output end of the monitoring assembly is connected with the output end of the air processing assembly in a conducting mode, the air component can be detected, the atmosphere can be temporarily processed, and therefore the influence of the polluted atmosphere on the environment can be reduced.

The utility model provides an atmospheric composition monitoring square cabin suitable for ship underway. The atmospheric composition monitoring shelter comprises an air inlet assembly, atmospheric composition monitoring equipment and an exhaust assembly. Wherein the air inlet assembly extends upwards from the interior of the cabin body to the exterior of the top wall of the cabin body and is used for sucking external air into the cabin body, and the air inlet assembly is used for detecting and analyzing the air by the atmospheric composition monitoring equipment. After the atmospheric composition monitoring equipment detects sucked gas, tail gas is exhausted out of the cabin body from the exhaust assembly. According to the design, ordered flowing of gas is guaranteed, and stable operation of atmospheric composition monitoring equipment is facilitated. And the air inlet assembly and the exhaust assembly are arranged on the top wall and the bottom wall of the cabin body respectively, so that the space structure of the cabin body is fully utilized, and the space, used for installing the atmosphere monitoring system, in the cabin body is planned and utilized more reasonably. By means of the layout design, all components of the atmospheric monitoring system can be efficiently installed and operated in the limited cabin space.

This invention discloses an atmospheric composition monitoring device, comprising a housing, a fan mounted on the top of the housing, an air outlet of the fan fixedly connected to the upper end of an air outlet pipe, a lower end of the air outlet pipe fixedly connected to the upper end of a first air guide pipe located inside a water inlet pipe, the upper end of the water inlet pipe fixedly connected to the top of the housing, the lower end of the water inlet pipe fixedly connected to the left end of a bend pipe, and the right end of the bend pipe fixedly connected to the upper end of a drain pipe. This invention can effectively prevent rainwater from interfering with sensor readings and can effectively prevent dust in the air from affecting the sensor.

Systems and methods for dispersing oxidizing agents in the atmosphere to effect conversion of atmospheric methane to carbon dioxide are described. The system includes oxidizing agent delivery systems, elevated dispersion systems and associated control systems to control dispersion based on current and / or modelled atmospheric composition, atmospheric conditions and location specific parameters.

An ionosphere absorption effect evaluation method based on multi-source actual measurement data driving comprises the following steps of 1, obtaining and preprocessing observation data of an altimeter, and obtaining the optimal number of sunspots through the data of the altimeter; 2, calculating the electron density on a link through a three-dimensional time-varying ionosphere empirical model; 3, acquiring and preprocessing GRACE satellite observation data, and acquiring optimal solar radio flux and geomagnetic index by using the GRACE satellite data; 4, reconstructing atmospheric density and temperature at different heights on a link by using a global atmospheric empirical model; 5, calculating collision frequency of electrons, ions and neutral particles; and 6, calculating ionosphere absorption attenuation. According to the method disclosed by the invention, the electron density and the atmospheric component temperature and density on the communication link are reconstructed by using the data-driven optimized empirical model, the ionospheric absorption effect modeling on the communication link is finally realized, and a model support can be provided for communication effect evaluation of a radio information system with ultra-short waves and above frequency bands.

The invention provides an atmospheric composition monitoring system suitable for ship underway. A black carbon monitoring device, an ozone analysis device and a greenhouse gas analysis device are arranged in a cabin body. And a plurality of air supply ports are formed in the sampling pipe, so that external environment air introduced into the sampling pipe is conveyed into each atmospheric component monitoring device through the plurality of air supply ports. The atmospheric component monitoring system not only can monitor various atmospheric components, but also can ensure the sampling consistency. And a first greenhouse gas analysis device and a second greenhouse gas analysis device are arranged. The first greenhouse gas analysis device is used for monitoring carbon dioxide, methane and water in external environment air; and the second greenhouse gas analysis device is used for monitoring carbon monoxide and nitrous oxide in external environment air. And the most suitable monitoring method and technical parameters can be selected according to the characteristics of each gas, so that the monitoring precision and accuracy are improved.

The present invention belongs to the field of atmospheric environment monitoring and discloses a method and system for detecting atmospheric composition profiles using differential absorption laser imaging radar. The detection method comprises the following steps: Step S1: alternately emitting two laser beams with different central wavelengths toward the atmosphere to be measured; Step S2: receiving a light column image resulting from the interaction between the laser beams and the atmosphere to be measured, preloading a modulated speckle signal onto a spatial light modulator, modulating the light column image, and converting the modulated light signal into an electrical signal; Step S3: synchronously acquiring the electrical signal, converting the electrical signal into a digital signal, and combining the digital signal with the modulated speckle signal to restore the light column images corresponding to the two laser beams with different central wavelengths; Step S4: calculating the distance-resolved echo data corresponding to the two laser beams with different central wavelengths based on the relationship between the pixels of the restored light column image and the measured distance; and Step S5: inverting the concentration profile of the gas to be measured from the distance-resolved echo data corresponding to the two laser beams with different central wavelengths. The present invention has strong universal applicability.

1. Name of the Design Product: Atmospheric Composition Subdivider. 2. Use of the Design Product: For monitoring the atmospheric environment and conducting detailed analysis of its components. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photograph that Best Illustrates the Design Key Points: Perspective view.

The invention discloses an intelligent weather image acquisition and weather image recognition method and system, and particularly relates to the technical field of weather image recognition. The method comprises the following steps: performing continuous polarization imaging on a sky area, and synchronously acquiring space attitude and time information; carrying out preprocessing and Stokes parameter extraction on the polarized image data to obtain standardized sky polarized light field data; analyzing polarization degree distribution modes under different wavelengths by using a theoretical Rayleigh scattering model to obtain theoretical sky polarization mode characteristics; based on the polarized light field data, spatial distribution of actual clouds, aerosols and haze in the sky is identified, and actual atmospheric component distribution characteristics are formed; an abnormal polarization region is extracted through difference analysis of theoretical and actual characteristics, and halation polarization abnormity and scattering polarization abnormity are accurately classified based on geometric and spectral characteristics; generating a super local weather change early warning signal according to the classification result; the early warning accuracy and real-time performance of the super-local abnormal weather phenomenon are improved.

The invention relates to the technical field of atmospheric environment analysis and monitoring, and discloses an atmospheric environment monitoring device with a cleaning function, the atmospheric environment monitoring device with the cleaning function comprises a triangular telescopic frame, a meteorological monitor and a thermometer shelter cover, the meteorological monitor is arranged above the triangular telescopic frame, and the thermometer shelter cover is detachably mounted at the top of the meteorological monitor; a layered detection assembly is arranged at the top of the triangular telescopic frame and comprises a placement plate, the placement plate is fixedly connected to the top of the triangular telescopic frame, and electric telescopic rods are symmetrically and fixedly arranged at the top of the placement plate; through the arrangement of the one-way gas inlet valve, the gas storage cylinder and the rotating pipe, gas is fully mixed in the gas storage cylinder, the local concentration difference of instantaneous gas flow is eliminated, the sampled gas is closer to the average atmospheric composition in the time period, the sampling representativeness is improved, the gas spirally flows into the detection cavity pipe, and the detection accuracy is improved. The spiral flow mode prolongs the retention time of the gas in the detection cavity tube, and enables the gas to be more uniformly contacted with the detection element.

The utility model relates to an electric energy conversion device, in particular to an integral conversion circuit based on atmospheric composition detection, which comprises a capacitor circuit, a high-precision voltage reference source and a high-precision analog-to-digital converter. In the capacitor circuit, an integrator receives a current signal of the high-voltage electrode, carries out integration processing and stores charges, and two ends of a capacitor are connected with the high-voltage electrode and a feedback path of the amplifier; the high-precision voltage reference source provides a reference voltage, the amplifier increases the voltage of an input signal and generates an output voltage, the voltage reference compares the reference voltage with the output voltage, and the feedback network adjusts the output voltage according to a comparison result; the high-precision analog-to-digital converter converts voltage signals at the two ends of the integrating capacitor into digital signals and outputs the digital signals. The integration precision and stability of weak current are improved, and the sensor can detect the concentration of volatile organic compounds more accurately and reliably.

The application provides a satellite-ground communication attenuation calculation method, comprising: calculating the attenuation values of different meteorological factors on satellite-ground communication according to pre-acquired meteorological information to obtain attenuation component information. The meteorological information comprises meteorological observation information acquired at at least two adjacent time steps. The attenuation component information is input into a preset attenuation value calculation model, so that the attenuation value calculation model outputs corresponding total attenuation information. The total attenuation information calculated at the at least two adjacent time steps is input into a preset coupling network model together with the meteorological information, so that the coupling network model outputs total attenuation values. Thus, the problem that the conventional satellite-ground communication attenuation calculation method cannot handle the superposition of multiple atmospheric components is solved.

The present invention discloses a filament laser atmospheric detection spectrometer, comprising a telescope system, a slit, and a spectrometer system. Fluorescence spectrum information, which carries material composition information and is generated by the interaction between the filament laser and the atmosphere, is collected by the telescope system at the slit and then enters a spectral analysis system to obtain intensity information of different atmospheric spectra. The present invention enables real-time, high-resolution spectral detection of atmospheric composition on board spacecraft.

This invention discloses an on-orbit method and system for determining the spectral response function of a hyperspectral remote sensor, based on the solar reflection band. The method includes: step S1, acquiring multiple sets of input light sources to obtain a system of multiple linear regression equations; and step S2, calculating the system of multiple linear regression equations using the least squares method to obtain the pixel-by-pixel spectral response function of the remote sensor. This on-orbit method for determining the spectral response function of a hyperspectral remote sensor solves the problem of whether or not on-orbit observation of the spectral response function of a hyperspectral remote sensor is possible. It also shortens the observation cycle from months or even years to minutes, thereby improving the accuracy of satellite-based monitoring of global greenhouse gases, environmental pollutants, aerosols, and other atmospheric components, contributing to the high-quality development of national undertakings such as climate research, environmental protection, and low-carbon emission reduction.

An apparatus includes a container for preservation of articles defining an atmospheric control mechanism that maintains an internal atmospheric composition within the container such that an interior cavity of the container that is devoid of various contaminants including UV radiation, dust, oxygen, water, atmospheric moisture (humidity), reactive oxygen species, airborne chemical pollutants and / or airborne chemicals not conducive to the longevity or preservation of the articles to be protected. As such, the container protects and preserves articles by preventing decay and deterioration of the articles due to light, temperature, dirt, mold, humidity, hydrolysis due to moisture in the air, and oxidation with exposure to air.

The application provides a near-space full-altitude environment multi-element laser radar detection platform, constructs a trinity structure of "common basic support + atmospheric composition detection + meteorological multi-element detection", solves a multi-device data fusion problem through a unified optical reference and a time synchronization mechanism, improves the spatiotemporal consistency of detection data, realizes high-precision collaborative detection of "full altitude and multi-element", breaks through the capability limitation of a single platform and a dispersed networking scheme, constructs an efficient multi-source heterogeneous data processing architecture, meets the real-time storage, analysis and visualization needs of massive data, improves the reliability and expandability of the equipment, realizes all-weather unattended operation, and supports flexible expansion of subsequent functional modules.

The invention discloses a TROPOMI on-orbit calibration and performance tracking method based on background value statistics, which comprises the following steps: constructing a pure ocean background value data set, eliminating interference pixels by utilizing multiple physical thresholds such as cloud screening, solar flare screening and absorptive aerosol screening, and reducing errors in combination with geometric constraint conditions to obtain a TROPOMI background value; an empirical model of background values and observation geometry is established, angle dependence of the background values is eliminated through geometric normalization processing, then a long-term background value sequence is established, and a time sequence decomposition technology (STL) is adopted to separate seasonal fluctuation of a time sequence and a long-term attenuation trend of an instrument; finally, dynamic prediction and correction of a full-view-field background value of the sensor can be realized based on the constructed integrated space-time model, and a time consistency correction coefficient is calculated so as to eliminate long-term deviation introduced by instrument performance attenuation. According to the invention, the long-term consistency and reliability of atmospheric component products such as absorptive aerosol index and the like are obviously improved.