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Questions tagged [era5]

ERA5 is a new state-of-the-art gridded reanalysis product covering the period 1979 to the present and available through the Copernicus climate data store through a web interface or a python api. The dataset includes a wide range of climate variables, the most popular including hourly rainfall, 2 meter temperatures and sea surface temperature

ERA5 is a new state-of-the-art gridded reanalysis product covering the period 1979 to the present and available through the Copernicus climate data store through a web interface or a python api. The dataset includes a wide range of climate variables, the most popular including hourly rainfall, 2 meter temperatures and sea surface temperature

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pack/compress netcdf data ("add offset" and "scale factor") with CDO, NCO or similar

I have heavy netCDF files with floating 64-bits precision. I would like to pack using specific values for the add_offset and scale_factor parameters (so then I could transform to short I16 precision). I have found information for unpacking with CDO…
Diego Hernandez
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How to remove a "redundant" dimension with CDO (climate data operators)?

The ERA5 climate dataset is, in general, defined as a [lat, lon, time] matrix. Except for recent data, where it adds the exp_ver variable that indicate if the data is provisory (recent data, up to 3 months until the present, coded as "05") or old…
Diego Hernandez
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I am trying to download ERA5 reanalysis data(global)from python code but it shows data is too large

I want to download ERA5 reanalysis hourly data for global (from 1950 to 2022). I am trying to download by using python code from cdsapi. I am just trying to download only for 5 years (in each year only 3 months) but it shows failed as the request is…
haritha
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metpy cross_section function does not recognize coordinates in ERA5

I use the ERA5 dataset in order to plot a cross section of vertical velocity over southern Africa. A sample of the data is found here. I try to replicate the example given here, however, the cross_section function does not work, as there is missing…
Maria Chara Karypidou
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Data values are outside the valid range using cdo daysum

I have an ERA5 nc file of hourly precipitation from March until October for a 30-year time span. The data is from midnight to noon local time (so 4 am to 4 pm in UTC time zone). I need to find the daily sum of precipitation up until noon for each…
Thomas
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How to calculate daily average from ERA5 hourly netCDF data?

Hi dear all, I do apologize for repeating the question. I have downloaded and merged the ERA5 hourly dew-point temperature data (d2m_wb.nc) from the Copernicus web platform. Now, I want to calculate the daily mean from the hourly d2m_wb.nc data. The…
Soumik Das
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cdsapi era5 download to computer

I have some data I'd like to download from the era5 model via the cdsapi package: import cdsapi c = cdsapi.Client() url = c.retrieve( 'reanalysis-era5-single-levels', { 'product_type': 'reanalysis', 'format': 'grib', …
Rafael
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how to extract ECMWF ERA-5 data along animal track points?

I want to extract / interpolate an air temperature value for each track location (in space [xy], time [t], and altitude) from ERA5 hourly pressure level data. I retrieved the ERA5 dataset using CDS toolbox like below. But, I could not figure out how…
Batbr
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R save as NetCDF file after simple calculation

I want to do something (apparently) simple, but didn't yet find the right way to do it: I read a netcdf file (wind speed from the ERA5 reanalysis) on a grid. From this, I use the wind speed to calculate a wind capacity factor (using a given power…
L. Dbs
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Download data ERA5 with R. Problem module 'requests' from python

I have done a small program based on the work done by Dominic Royé to download data from ERA5 in R. And it was working perfectly a few months ago. I wanted to rerun it now. But there is a problem with the module…
Macadamia Brazowy
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How to use 1D function metpy.parcel_profile in xarray dataset open with dask

I can't calculate parcel_profile (1D function) on an xarray dataset (segmented with dask) in 4D. Hello, I really need help, I'm working on ERA5 hourly data on pressure levels. I've extracted relative humidity and temperature on several atmospheric…
nietreil
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Issue in ERA5 and ERA5-Land Monthly Precipitation Dataset

I have been attempting to use ERA5 and ERA5-Land precipitation data provided by CDS (https://cds.climate.copernicus.eu/cdsapp#!/home). The ERA5 monthly data with 0.25 x 0.25 degrees and ERA5-Land data with 0.1x0.1 degrees were downloaded from the…
user20664990
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Initializing empty zarr for parallel writing

I want to select subset area from ERA5 Zarr and write it to my own bucket. I want to do parallel processing. I first read the data: import xarray, fsspec, boto3, dask import dask.array as da from dask.distributed import Client, LocalCluster from…
Pörripeikko
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User Memory Limit Exceed GEE API

I am trying to extract forcing ERA5 data of spatial extent 3by3. Below is partial function code. When I am running the main file that calls the function, I am getting an error that User memory limit exceed. When I tried bounding box method, I was…
Bareera Nadeem Mirza
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Grads error " not a variable or function name"

when i was trying to plot climatology of peak wave period datavusing Grads ( era5 reanalysis product) The error shows 'pp1d not a variable or function name'. But the variable in the data is termed as pp1d itself. What could be the issue when i was…
Thanu
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