Questions tagged [era]

Questions about ECMWF re-analysis

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7
votes
2answers
2k views

Extracting Regional Data from ERA5

This is coming from a newcomer, so please be kind. As I delve into the world of meteo data and reanalysis for the first time, I found that acquiring weather data is a lengthy process, so I'm shouting ...
6
votes
2answers
615 views

What is the meaning of step in ERA reanalysis data?

The webpage to download ERA data includes an option called "time" which is intuitive, but also an option called "step". I can't find an explanation of the meaning of this. It can't be a time step ...
4
votes
1answer
202 views

ERA5 mean evaporation rates data - Why is that negative?

Please, let me know if this question is too technical/specific for Earth Science. In case, I will remove it and eventually post it elsewhere. I am processing some data extracted from ERA5 to set up a ...
3
votes
1answer
608 views

How to calculate 3-hour flux values in ERA-Interim?

Referring to the post: https://www.myroms.org/forum/viewtopic.php?f=30&t=3003 I understood how to calculate the slhf and sshf for 03, 06, 09 and 12 time steps. But I have values for 00, 15, 18 ...
3
votes
1answer
4k views

ERA Interim, how to handle total precipitation

I am trying to compute accumulated annual precipitation for year 2000-2001 based on the ERA Interim, but I am stuck with some unresolved questions: If I download the synoptic monthly means of "total ...