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1
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58
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Extreme trends in GSL (Growing Season Length) due to missing years in ERA5-Land based calculation
I calculated the Growing Season Length (GSL) index for the 1950–2023 period in Turkey using ERA5-Land daily mean temperature data. According to the definition:
First, find the first occurrence of at ...
-1
votes
1
answer
273
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How to Extract timeseries from gridded lat lon data (ERA5) in Python?
I have downloaded ERA5 global data which contains the following params:
total precipitation
snow fall
cloud cover
temperature at 2m
The data range is from Jan 2008 to Dec 2024.I am using xarray ...
1
vote
2
answers
171
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ERA5 Pressure Values on Theta Levels
How do I interpret the Pressure values in this dataset? I downloaded ERA5 Potential Vorticity and Pressure(Monthly means of Daily means, analysis, Potential Temperature levels). The pressure data ...
0
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1
answer
80
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Confusion with metpy water vapor functions
I'm trying to solve for surface turbulent latent heat flux and I need surface saturation humidity (qs) and surface air humidity (qa)
I currently have the 2m dew point temperature and 2m temperature ...
0
votes
1
answer
397
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Units of time variable in downloaded netCDF file are not compatible with the request code in ERA5 reanalysis data
I put my request to download the required data from the below Dataset of the ERA5 reanalysis
ERA5 hourly data on single levels from 1940 to present
In the downloaded .nc file, when I read it in the ...
-1
votes
1
answer
2k
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unable to download the data of era5 using new beta CDS
I am unable to download data from era5 using cdsapi code in python.
it might be due to incorrect update of my cdsapi but not sure.
i have shared my code and the error messages .....please guide if ...
2
votes
2
answers
775
views
How to handle large xarray/dask datasets to minimize computation time or running out of memory to store as yearly files (ERA5 dataset)
Currently, I am using ERA5-land data to calculate wind related variables. While I am able to calculate what I want, I do struggle with an efficient implementation to lift this heavy data in a feasible ...
0
votes
1
answer
738
views
cdsapi era5 download (not use retrieve function but service function)
I have some data I'd like to download from the era5 via the cdsapi package.
I do know most data can be downloaded via using cdsapi.Client.retrieve function. Such as many examples I can find at stack ...
0
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0
answers
138
views
How to ingest ERA5-Land orography to Google Earth Engine?
I would like to have elevation data associated with ERA5-Land dataset in Google Earth Engine. As far as I'm aware these data are not currently available in GEE, so I need to upload as a user asset.
I ...
1
vote
1
answer
326
views
Get resultant wind speed from U and V components in a netcdf file for all latitude, longitdue and times
I have a series of (about 200) netcdf files that have the u and v components of wind speed on a grid of lats and lons for each hour in a month. I am trying to create a colour map of the averge and ...
1
vote
0
answers
91
views
ERA5 model level conversion
Does anyone know of a toolbox to convert ERA5 model level data to height levels?
I have tried CDO but cannot find documentation of the parameter naming and formatting to use with ml2hl and as such the ...
0
votes
0
answers
70
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Downloading ERA5-Complete Reanalysis through CDSAPI results in Error-43. How to fix?
I am using flex_extract to send requests with CDSAPI to get ERA5 Complete Reanalysis Data. I can get data on 2018年08月09日 with the area 74/-24/9.875/60.375 but changing the date or the area results in ...
0
votes
1
answer
121
views
Troubleshooting nccopy: getting stuck at the end of rechunking
I am working with ERA5 atmospheric data to calculate wind speeds anywhere globally, at maximum spatial and time resolution. This results in an uncompressed 70GB file for one year's worth of data, and ...
2
votes
1
answer
144
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How can I improve the file reading time of large .nc files (70GB-350GB)?
I am working with ERA5 atmospheric data to calculate wind speeds anywhere globally, at maximum spatial and time resolution. This results in an uncompressed 70GB file for one year's worth of data, and ...
2
votes
1
answer
394
views
Rename output file with ERA5 daily statistics calculator API
I am trying to download ERA5 daily statistics from hourly ones with the ERA5 daily statistics calculator. Since I need multiple years and months I am using API. Following the instruction in the ...