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How to calculate the hourly solar radiation on a horizontal surface at the optimal angle? Is it possible to do this using data from NASA POWER? If not, how can this be done? For example, for coordinate 70;-149 in May, the optimal inclination angle is 39 degrees, the insolation value is 6.41. But the...

How to calculate it Hourly Cosine Solar Zenith Angles for Climatological Month GMT Time 00 - 23 hours?

we are talking about NASA POWER and the "all sky surface shortwave diffuse irradiance data set for an hourly interval

Hello!
In the "Parameter Dictionary" indicates that all sky surface shortwave diffuse irradiance exists for the hourly time interval, but in the "data access viewer" it is not there. Please tell me how it is possible to download this parameter?

Thanks for the answer.
Can you please tell me if the POWER GLOBAL widget has information about the average wind speed at an altitude of 50 meters for the climatological level? At the moment, the information there is only available for 10 meters.

Good day! There is no information on the NASA POWER website on the average monthly percentage of the time when the wind speed at an altitude of 50 m above the Earth's surface is within the specified range (%). Is there access to this information? The "POWER GLOBAL" chapter has information ...