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Category: Semi-empirical satellite inversion model

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Semi-empirical satellite inversion model

Satellite inversion model calibration satellite and future development

November 24, 2021November 24, 2021 admin
Satellite inversion model calibration satellite and future development

① Use ground measurement to calibrate satellite biasAlthough the satellite data of a certain location can only guarantee that the average irradiance deviation during the

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Semi-empirical satellite inversion model

Test and accuracy of semi-empirical satellite inversion model

November 16, 2021November 16, 2021 admin
Test and accuracy of semi-empirical satellite inversion model

In order to ensure the accuracy of the monitoring model, the use of ground-measured data is an important step in the data calculation process. It

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Semi-empirical satellite inversion model

Sources of uncertainty in solar irradiance

November 11, 2021 admin
Sources of uncertainty in solar irradiance

Uncertainty (error risk) is determined by both astronomical and geographic factors. The sun’s altitude angle (which affects the quality of the atmosphere) is also an

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Semi-empirical satellite inversion model

Calculation and downscaling of solar irradiance

November 5, 2021November 5, 2021 admin
Calculation and downscaling of solar irradiance

①Calculation of total irradiancePer Schmetz pointed out that Cl should be proportional to the total clear sky index kt=GHI/GHIclear. A linear relationship is used in

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Semi-empirical satellite inversion model

Factors affecting the dynamic range of total solar radiation

November 1, 2021November 1, 2021 admin
Factors affecting the dynamic range of radiation

① Non-uniform terrainIn coastal areas and some other arid areas, the ground albedo may change drastically within a relatively small range. Although today’s satellite navigation

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Semi-empirical satellite inversion model

Cloud extinction: cloud index

October 25, 2021October 25, 2021 admin
Cloud extinction: cloud index

Cloud extinction can be calculated directly using satellite information. The calculation process includes determining the cloud index (CI) according to the satellite imager and its

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Semi-empirical satellite inversion model

What is the clear sky irradiance?

October 20, 2021October 20, 2021 admin
What is the clear sky irradiance?

Clear sky irradiance refers to the total irradiance (GHlclear) and direct irradiance (DNlclear) of the solar radiation incident on the ground surface at a location

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Semi-empirical satellite inversion model

What is the basic principle of satellites?

October 12, 2021October 12, 2021 admin
What is the basic principle of satellites?

Meteorological satellites include polar orbiting satellites and geostationary satellites. Although polar-orbiting satellites are closer to the surface of the earth (about 850km vs. about 36,000km)

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