# Software and Tools

**URL:** https://forum.ecmwf.int/c/software-and-tools/17.md?page=4

[Latest](https://forum.ecmwf.int/latest.md) · [Categories](https://forum.ecmwf.int/categories.md) · [Tags](https://forum.ecmwf.int/tags.md)

**Page:** 5

---

## [Download speed: Custom grid vs default grid](https://forum.ecmwf.int/t/download-speed-custom-grid-vs-default-grid/11444)

<div class="topic-metadata">

**Author:** [@MOK](https://forum.ecmwf.int/u/MOK)\
**Replies:** 0\
**Last updated:** [18 February 2025 09:41 UTC](https://forum.ecmwf.int/t/download-speed-custom-grid-vs-default-grid/11444 "2025-02-18T09:41:28Z")

</div>

Hi, The CDS API allows us to download ERA5 hourly data on single levels for both fixed grid geometry (0.25° x 0.25°) and custom grid points (interpolated). I would like to understand whether the download speed (from AP…

---

## [HTTPError: 404 Client Error: Not Found for url: https://cds.climate.copernicus.eu/api/resources/reanalysis-era5-pressure-levels](https://forum.ecmwf.int/t/httperror-404-client-error-not-found-for-url-https-cds-climate-copernicus-eu-api-resources-reanalysis-era5-pressure-levels/11318)

<div class="topic-metadata">

**Author:** [@Jerome\_Arunakumaren](https://forum.ecmwf.int/u/Jerome_Arunakumaren)\
**Replies:** 0\
**Last updated:** [12 February 2025 09:31 UTC](https://forum.ecmwf.int/t/httperror-404-client-error-not-found-for-url-https-cds-climate-copernicus-eu-api-resources-reanalysis-era5-pressure-levels/11318 "2025-02-12T09:31:28Z")

</div>

The “.cdsapirc” file includes the “URL” as specified in the “CDSAPI setup” with the correct key. The “cdsapi” version is 7.5, and I have checked all the relevant boxes in the data license. When I ran the example Python c…

---

## [{ecmwfr} R package release v2.0.3](https://forum.ecmwf.int/t/ecmwfr-r-package-release-v2-0-3/11260)

<div class="topic-metadata">

**Author:** [@Koen\_Hufkens](https://forum.ecmwf.int/u/Koen_Hufkens)\
**Replies:** 0\
**Last updated:** [10 February 2025 12:05 UTC](https://forum.ecmwf.int/t/ecmwfr-r-package-release-v2-0-3/11260 "2025-02-10T12:05:23Z")

</div>

New release of the {ecmwfr} R package to query the data stores. Most prominently fixes a dynamic file renaming issue as the API returns variable formats, depending on the requested data. When requesting a netcdf or grib …

---

## [Access new CDS rest API](https://forum.ecmwf.int/t/access-new-cds-rest-api/11163)

<div class="topic-metadata">

**Author:** [@Integrated\_Modelling\_Part](https://forum.ecmwf.int/u/Integrated_Modelling_Part)\
**Replies:** 2\
**Last updated:** [10 February 2025 08:26 UTC](https://forum.ecmwf.int/t/access-new-cds-rest-api/11163 "2025-02-10T08:26:16Z")

</div>

Hello, We used to access the old version of the CDS REST API from Java code, but it stopped working after the upgrade. We have updated the API key and accepted the licence to access the sis-agrometeorological-indicators.…

---

## [Inconsistency between CDS API and web request form](https://forum.ecmwf.int/t/inconsistency-between-cds-api-and-web-request-form/11034)

<div class="topic-metadata">

**Author:** [@User\_figuera\_at\_sistema\_d](https://forum.ecmwf.int/u/User_figuera_at_sistema_d)\
**Replies:** 3\
**Last updated:** [9 February 2025 22:46 UTC](https://forum.ecmwf.int/t/inconsistency-between-cds-api-and-web-request-form/11034 "2025-02-09T22:46:02Z")

</div>

Hi, We noticed recent changes in the API vs. webform that started around Friday 24th of January 2025. Having fixed the error of single netcdf files being downloaded as zipped files, we now face another issue that is ma…

---

## [My download of ENSEMBLE model hourly FORECAST of ALDERPOLLEN(...) are cached](https://forum.ecmwf.int/t/my-download-of-ensemble-model-hourly-forecast-of-alderpollen-are-cached/11246)

<div class="topic-metadata">

**Author:** [@Ronald\_Van\_Assche](https://forum.ecmwf.int/u/Ronald_Van_Assche)\
**Replies:** 0\
**Last updated:** [9 February 2025 11:18 UTC](https://forum.ecmwf.int/t/my-download-of-ensemble-model-hourly-forecast-of-alderpollen-are-cached/11246 "2025-02-09T11:18:11Z")

</div>

my python script give me the same forecast since 2 days : " FORECAST: Europe, 20250207+\[0H\_94H\]" . I Think that my requests for this dataset are cached. I did a new search in this forum and found that we could …

---

## [\[Errno 2\] No such file or directory](https://forum.ecmwf.int/t/errno-2-no-such-file-or-directory/11219)

<div class="topic-metadata">

**Author:** [@Costanza\_Guarducci](https://forum.ecmwf.int/u/Costanza_Guarducci)\
**Replies:** 0\
**Last updated:** [7 February 2025 09:34 UTC](https://forum.ecmwf.int/t/errno-2-no-such-file-or-directory/11219 "2025-02-07T09:34:34Z")

</div>

Hi everyone! Does anyone know this error? \[Errno 2\] No such file or directory It occurs every time I try to access the earthkit library, installed inside an anaconda environment Thanks to anyone who can help me! CG

---

## [Yet again another undocumented and unnotified change in API ( format vs data\_format)](https://forum.ecmwf.int/t/yet-again-another-undocumented-and-unnotified-change-in-api-format-vs-data-format/11083)

<div class="topic-metadata">

**Author:** [@Imanol\_Uriarte\_Latorre](https://forum.ecmwf.int/u/Imanol_Uriarte_Latorre)\
**Replies:** 1\
**Last updated:** [30 January 2025 10:56 UTC](https://forum.ecmwf.int/t/yet-again-another-undocumented-and-unnotified-change-in-api-format-vs-data-format/11083 "2025-01-30T10:56:05Z")

</div>

I was having the issue of not getting the proper .nc file until I discovered which is the issue. Before, the API parameter was format: 'netcdf'. Now, in order to get the same result, you need to specify data\_format: 'n…

---

## [CDSAPI not returning netcdf](https://forum.ecmwf.int/t/cdsapi-not-returning-netcdf/11059)

<div class="topic-metadata">

**Author:** [@Jeffrey\_Logan](https://forum.ecmwf.int/u/Jeffrey_Logan)\
**Replies:** 0\
**Last updated:** [29 January 2025 09:32 UTC](https://forum.ecmwf.int/t/cdsapi-not-returning-netcdf/11059 "2025-01-29T09:32:02Z")

</div>

the cdsapi stopped returning netcdf files as a single download or within the zip archive today

---

## [Issue with downloading ERA5-Land post-processed daily statistics (401 Unauthorized)](https://forum.ecmwf.int/t/issue-with-downloading-era5-land-post-processed-daily-statistics-401-unauthorized/11045)

<div class="topic-metadata">

**Author:** [@Cindy\_Dai](https://forum.ecmwf.int/u/Cindy_Dai)\
**Replies:** 0\
**Last updated:** [28 January 2025 15:28 UTC](https://forum.ecmwf.int/t/issue-with-downloading-era5-land-post-processed-daily-statistics-401-unauthorized/11045 "2025-01-28T15:28:17Z")

</div>

Hello, I’m trying to download the ERA5-Land post-processed daily statistics from 1950 to the present using the CDS API, but I’m encountering an authentication error. Below is the code I used in a Colab environment: pip…

---

## [Error "Conection broken" downloading ERA5 hourly data on single levels](https://forum.ecmwf.int/t/error-conection-broken-downloading-era5-hourly-data-on-single-levels/7440)

<div class="topic-metadata">

**Author:** [@Eduardo\_Loza](https://forum.ecmwf.int/u/Eduardo_Loza)\
**Replies:** 5\
**Last updated:** [27 January 2025 22:51 UTC](https://forum.ecmwf.int/t/error-conection-broken-downloading-era5-hourly-data-on-single-levels/7440 "2025-01-27T22:51:54Z")

</div>

Hi everyone. I been downloading data in block of months to ERA5 hourly data on single levels with the API, but sometimes the connection is broken and in the terminal shows the next error message, but is not my internet …

---

## [cdsapi key and 404 issues](https://forum.ecmwf.int/t/cdsapi-key-and-404-issues/10905)

<div class="topic-metadata">

**Author:** [@Ben\_Weeding](https://forum.ecmwf.int/u/Ben_Weeding)\
**Replies:** 5\
**Last updated:** [27 January 2025 13:45 UTC](https://forum.ecmwf.int/t/cdsapi-key-and-404-issues/10905 "2025-01-27T13:45:41Z")

</div>

I’m trying to update my scripts (running on a linux jupyterhub server) to the new API, and I’m running into some issues. Firstly, when I follow the instructions to set the contents of my .cdsapirc file (Climate Data Sto…

---

## [Corrupted nc files from cdsapi for reanalysis](https://forum.ecmwf.int/t/corrupted-nc-files-from-cdsapi-for-reanalysis/10374)

<div class="topic-metadata">

**Author:** [@Lennart\_Salabarria](https://forum.ecmwf.int/u/Lennart_Salabarria)\
**Replies:** 1\
**Last updated:** [27 January 2025 10:00 UTC](https://forum.ecmwf.int/t/corrupted-nc-files-from-cdsapi-for-reanalysis/10374 "2025-01-27T10:00:56Z")

</div>

Hi, I cannot open the downloaded .nc files. I want to pull the following variables: ‘variable’: \[‘100m\_u\_component\_of\_wind’, ‘100m\_v\_component\_of\_wind’, ‘10m\_u\_component\_of\_wind’, ‘10m\_v\_component\_of\_wind’, ‘2m\_tempera…

---

## [CDS API on Colab](https://forum.ecmwf.int/t/cds-api-on-colab/10849)

<div class="topic-metadata">

**Author:** [@Fridah\_Nyakundi](https://forum.ecmwf.int/u/Fridah_Nyakundi)\
**Replies:** 3\
**Last updated:** [21 January 2025 15:37 UTC](https://forum.ecmwf.int/t/cds-api-on-colab/10849 "2025-01-21T15:37:11Z")

</div>

I have tried all morning to install CDS API to Google Colab. I am using colab because I want all the dataset to be on cloud (my pc is out of space). I have ran all the codes to install API and download the data. Has some…

---

## [tp daily data via tool.toolbox.orchestrator.workflow ???](https://forum.ecmwf.int/t/tp-daily-data-via-tool-toolbox-orchestrator-workflow/10912)

<div class="topic-metadata">

**Author:** [@Ulrich\_Weber](https://forum.ecmwf.int/u/Ulrich_Weber)\
**Replies:** 0\
**Last updated:** [20 January 2025 10:09 UTC](https://forum.ecmwf.int/t/tp-daily-data-via-tool-toolbox-orchestrator-workflow/10912 "2025-01-20T10:09:15Z")

</div>

Hi, Since the new cds system is in place, tool.toolbox.orchestrator.workflow is not available no more as before, which I used to retrieve daily estimates for example for tp. While most of the variables I’m interested …

---

## [CDS DOS attack?](https://forum.ecmwf.int/t/cds-dos-attack/10662)

<div class="topic-metadata">

**Author:** [@John\_McInnes](https://forum.ecmwf.int/u/John_McInnes)\
**Replies:** 1\
**Last updated:** [16 January 2025 01:31 UTC](https://forum.ecmwf.int/t/cds-dos-attack/10662 "2025-01-16T01:31:17Z")

</div>

CDS has been really slow for several months now. Small requests take hours or days. Are you under attack? Is it just too many users? If so why did it get so popular? Is there an official announcement acknowledging the …

---

## [North and South American countries are repeteadly excluded from downloaded data](https://forum.ecmwf.int/t/north-and-south-american-countries-are-repeteadly-excluded-from-downloaded-data/10731)

<div class="topic-metadata">

**Author:** [@kamuran\_samar](https://forum.ecmwf.int/u/kamuran_samar)\
**Replies:** 1\
**Last updated:** [10 January 2025 17:07 UTC](https://forum.ecmwf.int/t/north-and-south-american-countries-are-repeteadly-excluded-from-downloaded-data/10731 "2025-01-10T17:07:01Z")

</div>

hello, I have been using the CDS API to extract data from the derived-era5-single-levels-daily-statistics dataset, specifically focusing on the 2m\_temperature variable. The extraction process seems to work without error…

---

## [Very slow ERA5 download](https://forum.ecmwf.int/t/very-slow-era5-download/10610)

<div class="topic-metadata">

**Author:** [@Julian\_Alberto\_Giles](https://forum.ecmwf.int/u/Julian_Alberto_Giles)\
**Replies:** 1\
**Last updated:** [10 January 2025 01:52 UTC](https://forum.ecmwf.int/t/very-slow-era5-download/10610 "2025-01-10T01:52:12Z")

</div>

I am trying to download relative humidity over a small area on a pressure level basis for several years separately. It was working great during the weekend (3-6 January), each request took around 10 minutes. But since Tu…

---

## [cds HTTP error \[500 Internal Server Error\]](https://forum.ecmwf.int/t/cds-http-error-500-internal-server-error/10712)

<div class="topic-metadata">

**Author:** [@Ruoji\_Wang](https://forum.ecmwf.int/u/Ruoji_Wang)\
**Replies:** 0\
**Last updated:** [9 January 2025 22:02 UTC](https://forum.ecmwf.int/t/cds-http-error-500-internal-server-error/10712 "2025-01-09T22:02:25Z")

</div>

I’m downloading data on single\_levels. today it returns HTTP error \[500 Internal Server Error\] and no data can be download. What’s wrong? do I need to do something?

---

## [How to obtain the variable information of the ERA5 dataset through CDSAPI?](https://forum.ecmwf.int/t/how-to-obtain-the-variable-information-of-the-era5-dataset-through-cdsapi/10678)

<div class="topic-metadata">

**Author:** [@weicong\_Chen](https://forum.ecmwf.int/u/weicong_Chen)\
**Replies:** 0\
**Last updated:** [9 January 2025 10:00 UTC](https://forum.ecmwf.int/t/how-to-obtain-the-variable-information-of-the-era5-dataset-through-cdsapi/10678 "2025-01-09T10:00:14Z")

</div>

For the needs of data analysis, I first need to know all the variable information in the ERA5 dataset. Could you please tell me whether I can obtain the information of all variables through CDSAPI, including variable nam…

---

## [Certificate verify failed in CDS API request](https://forum.ecmwf.int/t/certificate-verify-failed-in-cds-api-request/10587)

<div class="topic-metadata">

**Author:** [@Paul\_Glantz](https://forum.ecmwf.int/u/Paul_Glantz)\
**Replies:** 1\
**Last updated:** [7 January 2025 18:53 UTC](https://forum.ecmwf.int/t/certificate-verify-failed-in-cds-api-request/10587 "2025-01-07T18:53:59Z")

</div>

I get this error when trying to download ERA5 data with a CDS API beta request. This is a new problem, since it worked one or two weeks ago. requests.exceptions.SSLError: HTTPSConnectionPool(host=‘cds-beta.climate.coper…

---

## [Should I uninstall the  old CDS API before installing  new CDS API？](https://forum.ecmwf.int/t/should-i-uninstall-the-old-cds-api-before-installing-new-cds-api/10570)

<div class="topic-metadata">

**Author:** [@Xingang\_Lyu](https://forum.ecmwf.int/u/Xingang_Lyu)\
**Replies:** 1\
**Last updated:** [7 January 2025 15:08 UTC](https://forum.ecmwf.int/t/should-i-uninstall-the-old-cds-api-before-installing-new-cds-api/10570 "2025-01-07T15:08:04Z")

</div>

In the past few years, I could download ERA5 smoothly and successfully using CDS API. But now I have to migrate to the new CDS API. Should I uninstall the old CDS API before installing new CDS API？I need a step-by st…

---

## [403 error - ERA5 data](https://forum.ecmwf.int/t/403-error-era5-data/10571)

<div class="topic-metadata">

**Author:** [@kamuran\_samar](https://forum.ecmwf.int/u/kamuran_samar)\
**Replies:** 1\
**Last updated:** [7 January 2025 09:22 UTC](https://forum.ecmwf.int/t/403-error-era5-data/10571 "2025-01-07T09:22:22Z")

</div>

hello I am experiencing a 403 Forbidden error when attempting to retrieve ERA5 data using the Python cdsapi library. Despite having accepted the terms of use for the dataset and correctly setting up my API credentials, …

---

## [Separation of retrieve and download](https://forum.ecmwf.int/t/separation-of-retrieve-and-download/10185)

<div class="topic-metadata">

**Author:** [@Magee\_Eric](https://forum.ecmwf.int/u/Magee_Eric)\
**Replies:** 6\
**Last updated:** [2 January 2025 09:43 UTC](https://forum.ecmwf.int/t/separation-of-retrieve-and-download/10185 "2025-01-02T09:43:25Z")

</div>

Is there a way in the new CDS-API to separate the retrieve and the download similar to what is described here by fridgerator on Sep 2, 2020?

---

## [Site download of netcdf are "good", same download via python API are "bad"](https://forum.ecmwf.int/t/site-download-of-netcdf-are-good-same-download-via-python-api-are-bad/10402)

<div class="topic-metadata">

**Author:** [@Vin\_Mar](https://forum.ecmwf.int/u/Vin_Mar)\
**Replies:** 1\
**Last updated:** [27 December 2024 19:20 UTC](https://forum.ecmwf.int/t/site-download-of-netcdf-are-good-same-download-via-python-api-are-bad/10402 "2024-12-27T19:20:42Z")

</div>

I’m using a short python script to submit an “era5-land-daily” request and download the file to my local machine. The requests in my script seem to be correctly formatted, since if I manually download the data from the C…

---

## [Downloading GRIB and applying partially the new GRIB to netCDF conversion](https://forum.ecmwf.int/t/downloading-grib-and-applying-partially-the-new-grib-to-netcdf-conversion/10411)

<div class="topic-metadata">

**Author:** [@Viterra\_Rotterdam](https://forum.ecmwf.int/u/Viterra_Rotterdam)\
**Replies:** 0\
**Last updated:** [23 December 2024 10:30 UTC](https://forum.ecmwf.int/t/downloading-grib-and-applying-partially-the-new-grib-to-netcdf-conversion/10411 "2024-12-23T10:30:07Z")

</div>

Hello, I’m working with the ‘ERA5 hourly data on single levels from 1940 to present’ dataset. I need to apply some timezone conversion based on longitudes (similar to the AgERA5 approach), but it is becoming complex to…

---

## [Total column ozone](https://forum.ecmwf.int/t/total-column-ozone/10354)

<div class="topic-metadata">

**Author:** [@WMO\_Country\_Uruguay](https://forum.ecmwf.int/u/WMO_Country_Uruguay)\
**Replies:** 0\
**Last updated:** [18 December 2024 20:32 UTC](https://forum.ecmwf.int/t/total-column-ozone/10354 "2024-12-18T20:32:50Z")

</div>

Dear, The Uruguayan Institute of Meteorology (INUMET) requests that the user wmo\_uy (Password: Twister251010) be authorized to access the FTP https://aux.ecmwf.int/. This request to be able to download the CAMS (Global…

---

## [Error with api.py downloading  CDS](https://forum.ecmwf.int/t/error-with-api-py-downloading-cds/10348)

<div class="topic-metadata">

**Author:** [@Jose\_Vegas](https://forum.ecmwf.int/u/Jose_Vegas)\
**Replies:** 1\
**Last updated:** [18 December 2024 16:02 UTC](https://forum.ecmwf.int/t/error-with-api-py-downloading-cds/10348 "2024-12-18T16:02:31Z")

</div>

Hi i have issues downloading with python using windows. Code: import cdsapi dataset = “reanalysis-era5-land” request = { “variable”: \[“total\_evaporation”\], “year”: “1979”, “month”: “01”, “day”: \[“01”\], “time”: \[…

---

## [Download ERA5 model level data using the CDS API](https://forum.ecmwf.int/t/download-era5-model-level-data-using-the-cds-api/10183)

<div class="topic-metadata">

**Author:** [@Brad\_Beechler](https://forum.ecmwf.int/u/Brad_Beechler)\
**Replies:** 4\
**Last updated:** [11 December 2024 22:09 UTC](https://forum.ecmwf.int/t/download-era5-model-level-data-using-the-cds-api/10183 "2024-12-11T22:09:21Z")

</div>

Has anyone gotten this to work, i can download pressure level and single level data fine but haven’t figured how to get model level data. Is there any documentation on this (i failed to find any googling around).

---

## [ChunkedEncodingError](https://forum.ecmwf.int/t/chunkedencodingerror/6633)

<div class="topic-metadata">

**Author:** [@user104](https://forum.ecmwf.int/u/user104)\
**Replies:** 6\
**Last updated:** [11 December 2024 07:59 UTC](https://forum.ecmwf.int/t/chunkedencodingerror/6633 "2024-12-11T07:59:50Z")

</div>

Hello, I am encountering a ChunkedEncodingError issue when trying to download ERA5 files. The error message reads: ‘Connection broken: IncompleteRead(659458560 bytes read, 671155268 more expected)’, indicating that the …

[Previous page](https://forum.ecmwf.int/c/software-and-tools/17.md?page=3)

[Next page](https://forum.ecmwf.int/c/software-and-tools/17.md?page=5)
