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Hi, I am looking at the data for coordinates: Latitude 37.662 / Longitude 121.875. It seems that the GMT times specified for the metrics "Monthly Averaged Hourly Solar Azimuth Angles" and "Monthly Averaged Hourly Solar Angles Relative To The Horizon". For comparison, I looked at other coordinates, Latitude 38.896 / Longitude -77.085, and that one was correct.

Clarification:

I believe I've run into a flaw with the data where there is a mismatch between the data values and the GMT times when they occurred. For instance, the following data set would indicate that for the latitude/longitude I've specified in the ticket, sunsets in July happen at 11:00 GMT, which is 4:00 PST. Days in California are long, but not that long :-)

Here is the link to the data I am referring to:

https://eosweb.larc.nasa.gov/cgi-bin/sse/grid.cgi?&num=302128&lat=37.662&submit=Submit&hgt=100&veg=17&sitelev=&email=skip@larc.nasa.gov&p=grid_id&p=exp_dif&p=avg_dnr&p=sol_noon&p=daylight&p=dy_cos_sza&p=hor_ang&p=azi_ang&p=ret_tlt0&p=ret_esh0&p=ret_psh0&p=T10M&p=DLYRANGE&p=RH10M&p=Q10M&p=srf_alb&step=2&lon=121.875

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1 Comment

  1. Response from a subject matter expert:

    Since you refer to “California” in the question, I’m assuming you are interested in a site in CA.  If that is the case, the longitude should be entered as a negative value rather than a positive value -> 37.662 by -121.875 .