ERA5 daily total precipitation data

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Rachit

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Nov 8, 2023, 9:55:51 PM11/8/23
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How to download daily total precipitation ECMWF ERA5 data? Please comment.
Dataset is available on GEE but, how to download it in csv format with all the pixel coordinates information too. I need values for each pixel in a polygon with their coordinate info also for ~30 years.

Moumita Das

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Nov 8, 2023, 11:06:41 PM11/8/23
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As far as I know, you can download it in a NetCDF format and use either Python or R (what I used) to parse it and convert it into a dataframe that you can use. 
I don’t think you can download it in a csv format from the ERA website itself. 
On Wed, Nov 8, 2023 at 1:55 PM Rachit <rachi...@gmail.com> wrote:
How to download daily total precipitation ECMWF ERA5 data? Please comment.
Dataset is available on GEE but, how to download it in csv format with all the pixel coordinates information too. I need values for each pixel in a polygon with their coordinate info also for ~30 years.

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Shiv Hastawala

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Nov 8, 2023, 11:22:11 PM11/8/23
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Hi Rachit

I haven't used this data set so I'm not entirely aware of how to use it.

But the following Git repos may be of some use to you:



Thanks and regards.


Yours sincerely

Shiv Hastawala

(He/His/Him)
Doctoral Student
Department of Economics
Binghamton University (State University of New York)

Zoom ID: 201 717 2613



On Wed, Nov 8, 2023 at 4:55 PM Rachit <rachi...@gmail.com> wrote:
How to download daily total precipitation ECMWF ERA5 data? Please comment.
Dataset is available on GEE but, how to download it in csv format with all the pixel coordinates information too. I need values for each pixel in a polygon with their coordinate info also for ~30 years.

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Ravi Chandu Munnangi

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Nov 9, 2023, 3:04:35 AM11/9/23
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How to use Python (or) R language to extract data from ECMWF datasets. Can you share any video or document regarding usage of Python (or) R?
If you have any material regarding this, please share it. I need to know this process that how to extract data using Python (or) R from datasets. Format is NetCDF only.

Pradeep Koulgi

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Nov 9, 2023, 4:49:44 PM11/9/23
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On GEE, once you know the image/s and your area of interest, downloading/exporting to your Drive should be straighforward -- you might find example code in GEE's documentation helpful to start off: 

arp...@iima.ac.in

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Nov 9, 2023, 4:49:44 PM11/9/23
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You can process netcdf files in R using the ncdf4 package. The following link provides some details:


On Thursday, November 9, 2023 at 8:34:35 AM UTC+5:30 Ravi Chandu Munnangi wrote:

Moumita Das

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Nov 9, 2023, 4:49:44 PM11/9/23
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Maybe email me separately? I don’t remember what online resources I used, but I can share code. 

RACHIT

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Nov 9, 2023, 4:49:44 PM11/9/23
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Thank you all for your comments.
Links to download ERA5 data from CDS API (python) with steps are:

Using CDS API also, we can only download hourly data and then make it daily using the code given in the first link above. But for downloading daily timeseries data for example nearly 30 years we need modified code with loop.

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Dammalapati Sai Krishna

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Nov 9, 2023, 6:49:34 PM11/9/23
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Hi Rachit! I had worked on ERA5 data from ECMWF Server long ago. Code

Hope the code is still relevant.


Best,
Dammalapati Sai Krishna,
7981548365

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RACHIT

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Nov 12, 2023, 12:52:06 AM11/12/23
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I have downloaded ERA5 daily aggregates using GEE (Exporting tables), but the data is not having coordinates and the file formatting is also not correct.

Thank you all for help. 

I will check out the links mentioned. 



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