Search found 8 matches

by josh33
Tue Jan 16, 2024 2:35 pm America/New_York
Forum: Questions/Comments
Question: Minimum Insolation Parameter Change
Replies: 11

Re: Minimum Insolation Parameter Change

Colleen, Can you confirm why MIN_AVAIL_INSOL_CONSEC_MONTH is not working? It's returning an "unknown error" https://power.larc.nasa.gov/api/temporal/climatology/point?start=2000&end=2020&latitude=43.6532&longitude=-79.3832&community=re&parameters=MIN_AVAIL_INSOL_CONSEC_...
by josh33
Wed Jan 03, 2024 10:43 am America/New_York
Forum: Questions/Comments
Question: Minimum Insolation Parameter Change
Replies: 11

Re: Minimum Insolation Parameter Change

Colleen,

Thanks for investigating this, MIN_AVAIL_INSOL_CONSEC_03 seems to be returning exactly what I was expecting for my model. I'll have to re-run this for a few more regions, but I trust it's the correct data this time.

Thank you and the team for the help.
by josh33
Wed Dec 27, 2023 4:26 pm America/New_York
Forum: Questions/Comments
Question: Minimum Insolation Parameter Change
Replies: 11

Re: Minimum Insolation Parameter Change

ASDC - c_mikovitz wrote: > 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 paramete...
by josh33
Wed Dec 27, 2023 11:08 am America/New_York
Forum: Questions/Comments
Question: Minimum Insolation Parameter Change
Replies: 11

Re: Minimum Insolation Parameter Change

ASDC - c_mikovitz wrote: > 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,...
by josh33
Tue Dec 19, 2023 5:06 pm America/New_York
Forum: Questions/Comments
Question: Minimum Insolation Parameter Change
Replies: 11

Minimum Insolation Parameter Change

I've devised a model that relies on the INSOL_CONSEC_xx_MIN values to best determine how we should specify our panel and batteries for off grid solar deployments. Previously this has been returned in the units of kW-hr/m^2/day however I've noticed two changes recently in the API data - INSOL_CONSEC_...
by josh33
Thu Aug 18, 2022 6:08 pm America/New_York
Forum: Questions/Comments
Question: No Sun Days
Replies: 5

Re: No Sun Days

Thank you for sharing this paper. The methodology is much clearer now. As I understand it, there can be a consecutive day deficit below average, however, the total insolation over that period could still be sufficient to keep the system online, depending on the panel sizing. It seems that the Equiva...
by josh33
Fri Aug 12, 2022 5:25 pm America/New_York
Forum: Questions/Comments
Question: No Sun Days
Replies: 5

Re: No Sun Days

ASDC - cheyenne.e.land wrote: > Hello we apologize for the delay, but thank you for using POWER, > > The Services Version 2 of POWER provides Data Version 901 POWER data > (Services Version 1 provided Data Version 801). The Data Version 901 > improves the 1) underling source data models and 2) enhan...
by josh33
Thu Jul 21, 2022 12:31 pm America/New_York
Forum: Questions/Comments
Question: No Sun Days
Replies: 5

No Sun Days

I'm spec'ing off grid solar installations that need to remain online 24/7. I've been using the 'No Sun Days' from the POWER api to determine the number of consecutive days my installations will need to rely on batteries so I can determine bank sizing. However, the parameter and data have changed on ...