36 results about "Net radiation" patented technology

Methods, devices and device components are presented for uniformly treating fluids undergoing mixing with electromagnetic radiation. In one aspect, the present invention provides methods of treating a fluid undergoing continuous fluid mixing wherein net radiant energies necessary to provide uniform treatment of the fluid samples with electromagnetic radiation are calculate on the basis of the volume, mass or mixing rate of the fluid or any combination of these variables. In another aspect, the present invention provides algorithms for determining net radiation energies, radiant powers, and / or illumination times necessary for providing uniform treatment of fluid samples. The present invention provides methods for uniformly reducing pathogens in biological fluids, including blood and blood components.

The invention relates to an ET estimation method for different crops of an irrigated area based on canopy air temperature difference and remote sensing information. The method comprises the steps thatcalibration and determination of characteristic parameters a and b are performed on an S-I model according to at least two years of typical detailed farmland test historical observation data so as toacquire a reliable and accurate calibrated S-I model; the Landsat7 and MODIS data are fused by using an enhanced space-time adaptive fusion algorithm by using the Landsat and MODIS remote sensing image data within the irrigated area crop growth period so as to obtain the LST data set of 30m spatial resolution per day within the irrigated area crop growth period; the LST is the surface temperature; and the distribution of the area farm net radiation Rn and the air temperature Ta is acquired through combination of the conventional observation data from the local weather bureau, and the area crop ET is estimated by using the calibrated S-I model on the basis of the LST data set of high spatial resolution. The area crop ET can be rapidly and accurately estimated so as to provide the timely and accurate data for agricultural irrigation management of the irrigated area.

The invention provides a crops water forcing index determining device and method. The determining device includes: data collecting and processing units, composed of a data collecting probe and of data collector and calculating unit, respectively and connected with each other; the data collecting probe includes infrared temperature measuring probe, ventilated psychrometer, solar net radiation meter, and wind velocity indicator. It also includes application of determining method in determining crops water forcing index. The monitoring station can be set in any position in the farm, enhancing working efficiency, making it unnecessary bury the system underground, providing convenient condition for agricultural mechanical labor. The system applies CWSI theoretical mode to diagnose water forcing and form an irrigating policy, enhancing diagnosis precision, able to largely reduce the waste in water resource and enhancing the utilization ratio of irrigating water resource.

The invention provides a construction method of a regional scale double-source evapotranspiration model considering dynamic vegetation change. The construction method comprises the following steps: S1, performing regional evapotranspiration estimation of the double-source evapotranspiration model: calculating net radiation data of a required regional scale input by a model; calculating net radiation components Rns and Rnc; calculating each influence factor; performing simulated estimation on evapotranspiration ET; s2, carrying out parameter optimization under different vegetation types; s3, performing simulation effect verification of the regional scale double-source evapotranspiration model considering dynamic vegetation change: performing site scale verification; performing regional scale verification; and performing basin scale verification. According to the model disclosed by the invention, the dynamic change of the vegetation is incorporated into evapotranspiration calculation andanalysis, and meanwhile, the model is expanded to a regional scale, has a multi-scale analysis function and has the advantage of few aerodynamic parameters of the PT-JPL original model, has low requirements on ground data and aerodynamics, and plays a role in promoting the accuracy improvement of regional scale evapotranspiration estimation.

The invention discloses a method and system for diagnosing plant water stress based on high-flux stomatal conductance, and belongs to the technical field of agricultural irrigation. A plant water stress diagnosis system consisting of high-flux stem flow, meteorological data, net radiation measurement equipment and plant height leaf area parameter auxiliary measurement is combined with a P-M formula to continuously output high-flux stomatal conductance, so that a water stress index is calculated by utilizing the stomatal conductance; and the long-time, accurate, high-pass and continuous monitoring, quantification and diagnosis of plant water stress are realized; a reference plant growing under the condition of no water stress is placed in the same growth climate environment as a plant to be detected, and according to the characteristic that the stomatal conductance of the plant is very sensitive to the water stress, the invention provides an index for diagnosing the water stress of the plant. The index can be obtained by calculating the stem flow, net radiation and meteorological data of the to-be-measured plant and the reference plant which are automatically measured in a high-flux manner, so that the high-flux quantification and diagnosis of the water stress degree of the to-be-measured plant are realized. The method comprehensively considers plant physiological response and environmental influence, and has the characteristics of physiological basis, reliable data, long-time accuracy and high-pass continuity in the application of diagnosing plant water stress.

The invention belongs to the field of novel energy technical development, in particular to a three-dimensional tapered nano-layer film structure, a preparation method thereof and application thereof.The three-dimensional tapered nano-layer film structure provided by the invention comprises silicon dioxide layer-hafnium dioxide composite layers and sliver layers, wherein silicon dioxide layers arearranged above hafnium dioxide layers; number of the silicon dioxide layer-hafnium dioxide composite layers is greater than 10; and the silicon dioxide layer-hafnium dioxide composite layers are arranged above the sliver layers. The invention further provides a preparation method for the three-dimensional tapered nano-layer film structure, and further provides application of the three-dimensionaltapered nano-layer film structure or a product prepared by the preparation method in a radiation cooling device. The three-dimensional tapered nano-layer film structure is introduced, so that high-performance dual-window atmospheric radiation can be realized, and high-efficiency passive radiation cooling ability can be finally realized. The technical defect that a daytime cooling method has low net radiation cooling power in the prior art is solved.

The invention discloses a method for inverting topsoil volumetric water content by employing multi-temporal observation data of a geostationary meteorological satellite. The method mainly includes: a soil moisture inversion model is built; the land surface temperature and net surface shortwave radiation are inverted in a quantification manner by employing the data of the geostationary meteorological satellite, dimensionless treatment is performed on the land surface temperature and the net surface shortwave radiation, ellipse fitting is performed on the multi-temporal land surface temperature and the net surface shortwave radiation, an ellipse parameter corresponding to each pixel is obtained, and the parameters are regarded as input data of the soil moisture inversion model; an acquisition method of model coefficients is obtained; and specific requirements of dimensionless treatment are imposed on the land surface temperature and the net surface shortwave radiation. According to the method, the problems caused by the lack of polar orbiting satellite data information of the conventional optical and thermal infrared remote sensing soil moisture inversion method are solved.

The invention provides a construction method of a regional scale evapotranspiration model synchronously considering dynamic changes of a vegetation canopy and a root system. The construction method comprises the following steps: S1, calculating net radiation, net radiation components and influence factors through regional scale data required by a PT-JPL model; s2, estimating the plant effective root depth Zr of the Chinese regional scale based on a Guswa model; and S3, coupling the effective root depth Zr of the plant into the PT-JPL three-source evapotranspiration model to construct a regional scale evapotranspiration model synchronously considering the dynamic change of the vegetation canopy and the root depth. According to the model, the vegetation dynamic change and the plant effective root depth are jointly incorporated into evapotranspiration calculation and analysis, the transverse change (vegetation coverage) of the vegetation dynamic state is considered, meanwhile, the longitudinal change (root depth) of the vegetation change is considered, the multi-scale analysis function is achieved, the requirements for ground data and aerodynamics are low, and the method is easy to implement. And the improvement of the evapotranspiration of the regional scale and the evapotranspiration component estimation accuracy is promoted.

The invention provides an automatic irrigation system, which is provided with a temperature and humidity detection module for detecting the temperature and the humidity of a crop growth environment and judging whether moisture needs to be added to a crop, and a net radiation detection module for detecting net radiation of air in the crop growth environment, detecting the illumination intensity in the crop growth environment, wherein net radiation data and light intensity data are used for calculating of the crop and deducing the more accurate moisture required by the crop; and a micro-infiltration belt is buried into soil and water directly acts on a crop root, so that water loss is avoided and the utilization rate of water is improved. The automatic irrigation system is capable of detecting whether water stored in a box body is sufficient or not and adjusting supply of the moisture on the basis of a theoretical numerical value of the moisture required for crop growth according to the temperature, the humidity, the net radiation and the light intensity. Irrigation is carried out through the micro-infiltration belt, and the crop growth environment is considered to adjust supply of the moisture, so that the crop is provided with required sufficient moisture while the utilization rate of the water is improved.

The invention relates to a method for acquiring an internal temperature field of a baking box. The method comprises steps of radiation force calculation, gray body angle coefficient calculation, net radiation quantity calculation and variable and sensitivity analysis.

The invention discloses a method for starting irrigating with a greenhouse nutrient solution. Transpiration E of crops is taken as daily water demand of the crops, and irrigation is started when the transpiration E of the crops is larger than or equal to previous irrigation amount of the nutrient solution. The transpiration E of the crops is calculated according to a formula that E=0.5XRn+1.5XRH-0.3, wherein E refers to the transpiration of the crops in mm, Rn refers to net radiation of accumulation in Mj / m, and RH refers to relative humidity. After irrigation, a radiation value of previous accumulation is cleared to zero. By the method, the problems about irrigation time and irrigation frequency of the nutrient solution are solved, emission of residual solution is reduced, operation cost is saved while pollution to the environment is reduced, and the method can be applied to starting bases of greenhouse nutrient solution irrigation.

The embodiment of the invention provides an earth surface net radiation estimation method and system, electronic equipment and a storage medium, and the method comprises the steps: determining the multi-source data of a to-be-measured region based on the first remote sensing data and reanalysis meteorological data of the to-be-measured region or the second remote sensing data, the reanalysis meteorological data and the downlink short-wave radiation from station actual measurement data, wherein the first remote sensing data comprises downlink short-wave radiation, and the second remote sensingdata does not comprise downlink short-wave radiation; inputting the multi-source data into an earth surface net radiation estimation model to obtain an earth surface net radiation estimation result, output by the earth surface net radiation estimation model, of the to-be-measured area, wherein the surface net radiation estimation model is obtained by training based on sample site actual measurement data, a sample normalized vegetation index and sample reanalysis meteorological data of a sample region, actual measurement data of the sample station comprises sample downlink short-wave radiation,sample surface albedo and sample surface net radiation, and high-precision and high-resolution estimation of the surface net radiation is realized.

According to an urban canopy model establishment method based on tropical island climate characteristics and provided by the invention, adjacent regions are linked together, a plurality of streets with finite lengths in the regions and mutual influence are realized, and the net radiant heat flux tropical island urban canopy model has the characteristics of high net radiant heat flux and high net radiant heat flux. In consideration of strong solar radiation and high-temperature and high-humidity climate characteristics of tropical cities and influence of monsoon throughout the year on island cities, a method for processing long-wave radiation flux, short-wave radiation flux, sensible heat and latent heat flux, street canyon wind speed, heat storage flux, man-made heat flux and horizontal heat flux is improved on the basis of an urban canopy model; and the suitability for researching the heat island effect of the tropical sea island type city is higher.

The invention provides a method of using shortwave radiation to estimate long-wave net radiation and downlink radiation and an apparatus thereof. The method of using shortwave radiation to estimate long-wave net radiation comprises the following steps of acquiring a short wave net radiation sample and a long wave net radiation sample; establishing a mathematical relationship between the short wave net radiation sample and the long wave net radiation sample; acquiring a remote sensing image to be processed; calculating the short wave net radiation corresponding to the remote sensing image; substituting the short wave net radiation into the mathematical relationship so that the long wave net radiation corresponding to the remote sensing image is acquired; and further, according to the long wave net radiation, acquiring long wave downlink radiation. Through the method and the apparatus, no matter in a cloud condition or under a clear sky condition, the short wave radiation can be used to estimate long wave radiation and a technical problem that the long wave radiation can not be acquired from the remote sensing image in the cloud condition so that a long wave radiation space is not continuous in the prior art is solved.

The invention discloses a crop irrigation method, device and system and a readable storage medium, and belongs to the technical field of agriculture, and the method comprises the steps: S1, collectingcrop environment information from a vegetation field of a crop, wherein the crop environment information comprises temperature data, humidity data, long-wave net radiation data and short-wave net radiation data; s2, processing the crop environment information by using a maximum entropy increase model to obtain a potential evapotranspiration amount and an actual evapotranspiration amount of the crop; S3, calculating a crop coefficient Kc corresponding to the crop by utilizing the potential evapotranspiration and the actual evapotranspiration, wherein the crop coefficient Kc is used for representing the condition that the crop is subjected to water stress; and S4, generating an irrigation strategy based on the crop coefficient Kc corresponding to the crop so as to irrigate the crop. Crops are irrigated in a targeted mode, the irrigation reliability is good, the irrigation accuracy is high, and the problem that the crops are not fully irrigated or excessively irrigated can be effectivelysolved.

The embodiment of the invention relates to the technical field of remote sensing technologies, and discloses a downscaling sea surface net radiation determination method, system and device and a storage medium. The method comprises the steps of firstly obtaining a preset downscaling estimation model; determining the net radiation of the first remote sensing data corresponding to the first spatialresolution through a preset downscaling estimation model to obtain the sea surface net radiation data corresponding to the second spatial resolution, wherein the value of the second spatial resolutionis smaller than the value of the first spatial resolution. According to the embodiment of the invention, because a downscaling processing mode corresponding to the preset downscaling estimation modelis used, the sea surface net radiation data with the smaller spatial resolution can be determined through the remote sensing data with the thicker spatial resolution, thereby solving the technical problem of being difficult to adapt to the smaller spatial resolution.

The invention discloses a simplified climatic change prediction method. The method comprises the following steps: firstly, obtaining annual average net radiation force according to heat absorption and heat release of the earth, and performing regression analysis according to the change of annual average forced radiation and the change of average temperature to obtain a simplified linear model; considering ocean temperature changes, carrying out data fitting on existing ocean temperature data, predicting future global ocean temperature changes through an improved neural network model, and finally carrying out polynomial fitting by combining the ocean temperature changes with earth surface temperature changes to determine global climate changes.

The present invention relates to a net total radiation meter used for meteorological measurement, the meter consists of two long wave radiation meters and two short wave radiation meters. The long wave radiation meter is provided with a long wave radiation meter machine seat, a cover seat is arranged at the outer side of the machine seat, a hemicycle quartz glass cover is embedded on the cover seat, a winding electric plating type thermoelectric pile is supported by the center of the long wave radiation meter machine seat; two short wave radiation meters are respectively provided with a short wave radiation meter machine seat, another cover seat is arranged at the upper end of the machine seat, an arched light filter cover is embedded on the cover seat, the center winding of the short wave radiation meter machine seat supports the thermoelectric pile in the electric plating type. The net total radiation meter of the present invention has the advantages that the structure is simple, the measuring range is wide, and the measuring accuracy is high, etc.

The invention discloses a method for improving an areal aridity / humidity simulating effect. The method comprises the following steps: collecting monthly meteorological data of each site in a study area and net long wave radiation data in the study area, calculating total radiation simulation values by at least two total radiation correcting methods respectively, comparing all the total radiation simulation values with a total radiation observation value respectively, and judging out the total radiation correcting method with the highest accuracy; calculating net long wave radiation values by different net long wave radiation calculating methods, then judging out the net long wave radiation calculating method with the highest accuracy, and calculating a radiation correcting formula of net radiation; calculating the largest possible evapotranspiration according to the radiation correcting formula, and calculating an aridity / humidity index according to the largest possible evapotranspiration. Compared with the conventional FAO56 model calculation method, the method provided by the invention has the advantages as follows: through modification of the conventional model estimation method, the aridity / humidity simulating effect is improved, the applicable area of the model estimation method is widened and the model estimation method is higher in accuracy and better in reliability.

The invention relates to a method and a device for estimating clear sky solar radiation in an oasis farmland. The method comprises the following steps: determining the earth's surface albedo and the earth's surface reflectance; utilizing a thermal infrared wave band to determine the earth's surface temperature, and affirming that the earth's surface temperature is equal to the air temperature based on the standard reference surface within the range of the oasis farmland; utilizing ground measured data to acquire downstream short-wave radiation and downstream long-wave radiation; utilizing the acquired data to determine the ratio of net radiation flux, average daily net radiation and instantaneous net radiation, the ratio of daytime net radiation to the instantaneous net radiation, and the ratio of the instantaneous net radiation at time t2 and the instantaneous net radiation at satellite passing time t1; according to the ratio of the net radiation flux, the average daily net radiation and the instantaneous net radiation, the ratio of the daytime net radiation to the instantaneous net radiation, and the ratio of the instantaneous net radiation at time t2 and the instantaneous net radiation at satellite passing time t1, determining the average daily net radiation, the daytime net radiation and the net radiance at any time point.

The existing method for measuring the radiant heat flow of a building envelope has the two problems of (1) larger error and (2) low measurement efficiency. In order to overcome the defects of the radiant heat flow measuring method, the invention provides a method for quantitatively measuring the net radiation heat flow of the outer surface of a building envelope based on an infrared imaging technology. On the basis of the Stefan-Boltzmann law, the infrared thermal imaging technology and infrared thermal imaging processing software are adopted, so that the net radiant heat flow of the outer surface of an envelope can be rapidly calculated in different regions and under different building conditions, and the defects of existing radiant heat flow measurement are well overcome.

The invention discloses a radiation-resistant tent. The tent comprises a tent body, wherein the tent body comprises a metal net layer consisting of metal wires, and a fabric layer; and the metal wires are obliquely crossed to form a net. The problem that the conventional tent cannot resist radiation is solved, the tent can effectively block multiple kinds of radiation, has a simple structure and is suitable to be widely used, living environment is good, and safety is improved.

The present invention discloses a method and system for measuring a regional humidity degree. According to the method, firstly an environmental parameter of a measurement area is obtained, then a net radiation of the measurement area is calculated according to the environmental parameter, the potential evapotranspiration of the measurement area is calculated according to the environmental parameter and the net radiation, and finally a humidity index of the measurement area is calculated according to the potential evapotranspiration and the environmental parameter. According to the method and the system, the influences of parameters of air temperature, solar radiation, sunshine duration, wind speed, relative humidity and precipitation on the regional humidity degree are comprehensively considered, a calculation result can accurately characterize a regional environment humidity degree, and the reliability is high.

The invention provides a sea surface net radiation estimation method and system. The sea surface net radiation estimation method comprises the steps of obtaining target multi-source data of a sea surface area to be measured, wherein the target multi-source data comprises remote sensing data, reanalysis data and site actual measurement data of the to-be-measured sea surface area; inputting the target multi-source data into a sea surface net radiation estimation model, and outputting first net radiation of the sea surface area to be measured, wherein the sea surface net radiation estimation model is obtained by taking sample multi-source data of a sample sea surface area as a sample and taking site actual measurement net radiation of the sample sea surface area corresponding to the sample as a sample label for training. According to the method and system, the sea surface net radiation estimation is carried out by integrating multiple data sources, respective advantages of different data sources are exerted, the resolution and precision of sea surface net radiation estimation are improved, and long-time-sequence, high-precision and high-resolution sea surface net radiation estimation can be achieved.

The invention discloses an anti-radiation curtain comprising a curtain. The anti-radiation curtain consists of a metal net layer formed by metal wires, and a fabric layer, wherein the metal wires are obliquely crossed to form a net shape. The anti-radiation curtain solves the problem that the conventional curtain can not prevent radiation, and can effectively block various radiations, so that the living environment is green and environment-friendly, the living safety is improved, and the structure is simple; and the anti-radiation curtain is suitable for being used widely.