Search found 8 matches

by ASDC - c_mikovitz
Mon Jan 22, 2024 9:06 am America/New_York
Forum: Home
Question: Minimum Insolation Parameter Change
Replies: 11

Re: Minimum Insolation Parameter Change

Hi josh33,

Thanks for pointing this out. We found an error in one of our behind-the-scenes fields that prevented this parameter from being served through the API. It should be good to go now.

Colleen
by ASDC - c_mikovitz
Wed Jan 03, 2024 7:19 am America/New_York
Forum: Home
Question: Minimum Insolation Parameter Change
Replies: 11

Re: Minimum Insolation Parameter Change

Hi josh33, We worked on the API and associated metadata yesterday. Surplus is now available; units for others should be correct now. Give this a try to see if it fits your needs better: https://power.larc.nasa.gov/api/temporal/climatology/point?start=2001&end=2020&latitude=43.6532&longit...
by ASDC - c_mikovitz
Tue Jan 02, 2024 9:32 am America/New_York
Forum: Home
Question: Minimum Insolation Parameter Change
Replies: 11

Re: Minimum Insolation Parameter Change

This API call will give the daily average insolation per month, https://power.larc.nasa.gov/api/temporal/climatology/point?start=1990&end=2019&latitude=43.6532&longitude=-79.3832&community=re&parameters=ALLSKY_SFC_SW_DWN&format=json&header=true . We have some errors in th...
by ASDC - c_mikovitz
Wed Dec 27, 2023 4:04 pm America/New_York
Forum: Home
Question: Minimum Insolation Parameter Change
Replies: 11

Re: Minimum Insolation Parameter Change

Hi josh33, The dictionary value for longname is incorrect, it should read "Minimum Available Insolation is the climatological minimum rolling sum over the n-day period in the given month." We revised the equations that give the values for the parameters. At this point it might help if you ...
by ASDC - c_mikovitz
Wed Dec 27, 2023 10:00 am America/New_York
Forum: Home
Question: Minimum Insolation Parameter Change
Replies: 11

Re: Minimum Insolation Parameter Change

Hi josh33,

The parameter name has changed; MIN_AVAIL_INSOL_CONSEC_XX gives units of kW-hr/m^2/day while INSOL_CONSEC_XX_MIN gives the percentage. We have removed INSOL_CONSEC_XX_MIN_PCT from the API.

Hopefully this will get your model back on track.

Thanks,
Colleen
by ASDC - c_mikovitz
Mon Aug 28, 2023 1:33 pm America/New_York
Forum: Home
Question: POWER LARC 2-meter hourly temperature data
Replies: 2

Re: POWER LARC 2-meter hourly temperature data

The POWER data looks to be identical to the MERRA-2 hourly data with the adjustment for local time. Since the MERRA-2 data grid box size is 0.5 latitude x 0.625 degree longitude, the average elevation for the grid box is quite a bit larger than the surface site 332 m (MERRA-2) to 74 m. That may be t...
by ASDC - c_mikovitz
Wed Sep 14, 2022 3:17 pm America/New_York
Forum: Home
Question: SWGNET, is albedo already applied?
Replies: 1

Re: SWGNET, is albedo already applied?

Yes, the upward component of the shortwave flux accounts for the albedo. Surface net downward shortwave flux is defined in the same manner as longwave, so your equation for that is correct (SWGNET = SWGDWN - SWGUP). If you would like to know the albedo used in the flux calculation, you can divide th...
by ASDC - c_mikovitz
Mon Aug 15, 2022 2:47 pm America/New_York
Forum: Home
Question: No Sun Days
Replies: 5

Re: No Sun Days

Hello, We realized that the previous formula was incorrect and not giving the desired results, therefore the previous method will not be available. The parameter was never intended to be actual consecutive no-sun days, but equivalent no-sun days. This work is based off a presentation at the Solar Wo...