NASA Prediction Of Worldwide Energy Resources

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bi61
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NASA Prediction Of Worldwide Energy Resources

by bi61 » Wed Mar 30, 2022 10:48 am America/New_York

Hello,
I need to download data about this parameter "Evaporation Land", Abbreviation: EVLAND

via the API from this site https://power.larc.nasa.gov/

I use this command, it works but I receive zeros, "0.0", I have tried different points (different coordinates) and different dates I still receive zeros for all of them. Obviously thay can't be so.

https://power.larc.nasa.gov/api/temporal/daily/point?start=20200630&end=20200830&longitude=-4.6755&latitude=36.5687&community=ag&parameters=EVLAND&format=json&header=true&time-standard=lst

when I try a different parameter say "Temperature at 2 Meters" Abbreviation: T2M, (replace EVLAND with T2M), I receive valid data.
What might be the problem with EVLAND?
Thank you
by ASDC - bmacpher » Wed Apr 06, 2022 2:26 pm America/New_York
Thank you for the replay we are working on the issue currently and expect to have it resolved in about a week; we will be updating the API to respond with updated units 'kg m-2 s-1 10^6' instead of the 'kg m-2 s-1' that currently has the precision issue. That unit change is a scaling factor of 1 million.

If that is not sufficient for your needs and please pull the data yourself from MERRA-2 on https://giovanni.gsfc.nasa.gov/giovanni/, at the current time we cannot accommodate any higher level of precision. Other than the scale factor POWER does not alter the data please review the documentation from MERRA-2 for the definition and use cases.
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ASDC - cheyenne.e.land
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Re: NASA Prediction Of Worldwide Energy Resources

by ASDC - cheyenne.e.land » Fri Apr 01, 2022 11:43 am America/New_York

Hello,

A subject matter expert has been notified and will answer your question as soon as possible.

Regards,

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ASDC - bmacpher
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Re: NASA Prediction Of Worldwide Energy Resources

by ASDC - bmacpher » Wed Apr 06, 2022 10:36 am America/New_York

We've identified an issue with the precision of the evaporation land parameter's value, causing it to display 0.0 values. We are working to address the issue.

bi61
Posts: 2
Joined: Tue Mar 29, 2022 1:40 pm America/New_York

Re: NASA Prediction Of Worldwide Energy Resources

by bi61 » Wed Apr 06, 2022 1:08 pm America/New_York

ASDC - bmacpher wrote:
> We've identified an issue with the precision of the evaporation land
> parameter's value, causing it to display 0.0 values. We are working to
> address the issue.

thank you for your reply.
Could you provide estimate time of rectifying this issue?

ASDC - bmacpher
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Posts: 9
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Re: NASA Prediction Of Worldwide Energy Resources

by ASDC - bmacpher » Wed Apr 06, 2022 2:26 pm America/New_York

Thank you for the replay we are working on the issue currently and expect to have it resolved in about a week; we will be updating the API to respond with updated units 'kg m-2 s-1 10^6' instead of the 'kg m-2 s-1' that currently has the precision issue. That unit change is a scaling factor of 1 million.

If that is not sufficient for your needs and please pull the data yourself from MERRA-2 on https://giovanni.gsfc.nasa.gov/giovanni/, at the current time we cannot accommodate any higher level of precision. Other than the scale factor POWER does not alter the data please review the documentation from MERRA-2 for the definition and use cases.

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