# \#technical-questions **URL:** https://forum.ecmwf.int/tag/technical-questions/115.md [Latest](https://forum.ecmwf.int/latest.md) · [Categories](https://forum.ecmwf.int/categories.md) · [Tags](https://forum.ecmwf.int/tags.md) --- ## [Unable to login to ECMWF FTP server - Connection closed after AUTH TLS command](https://forum.ecmwf.int/t/unable-to-login-to-ecmwf-ftp-server-connection-closed-after-auth-tls-command/14214)
**Author:** [@Wang\_longtsing](https://forum.ecmwf.int/u/Wang_longtsing)\ **Replies:** 5\ **Last updated:** [21 September 2026 15:22 UTC](https://forum.ecmwf.int/t/unable-to-login-to-ecmwf-ftp-server-connection-closed-after-auth-tls-command/14214 "2026-09-21T15:22:17Z")
Dear ECMWF Support Team, I hope this message finds you well. I’m encountering an issue when trying to connect to the ECMWF User FTP service (ftp.ecmwf.int). Despite multiple attempts, I cannot complete the login process… --- ## [The MJO index calculated using the same method aligns well with the 'retrieve\_annual\_training\_data', but there are still significant deviations when compared to the 'retrieve\_daily\_MJO\_obs'](https://forum.ecmwf.int/t/the-mjo-index-calculated-using-the-same-method-aligns-well-with-the-retrieve-annual-training-data-but-there-are-still-significant-deviations-when-compared-to-the-retrieve-daily-mjo-obs/15245)
**Author:** [@Hailin\_Liu](https://forum.ecmwf.int/u/Hailin_Liu)\ **Replies:** 2\ **Last updated:** [12 August 2026 10:41 UTC](https://forum.ecmwf.int/t/the-mjo-index-calculated-using-the-same-method-aligns-well-with-the-retrieve-annual-training-data-but-there-are-still-significant-deviations-when-compared-to-the-retrieve-daily-mjo-obs/15245 "2026-08-12T10:41:01Z")
After revising the MJO index calculation method using the retrieve\_MJO\_projection\_data function provided in the updated AI\_WQ\_package, the MJO index calculated from the ERA5 data (U200, U850, and daily mean TTR, 1979–202… --- ## [Discrepancy in RMM Index Calculation (Inconsistency between the RMM index calculated using ERA5 data following the official procedure and the downloaded "MJO\_2025" dataset)](https://forum.ecmwf.int/t/discrepancy-in-rmm-index-calculation-inconsistency-between-the-rmm-index-calculated-using-era5-data-following-the-official-procedure-and-the-downloaded-mjo-2025-dataset/15200)
**Author:** [@Hailin\_Liu](https://forum.ecmwf.int/u/Hailin_Liu)\ **Replies:** 6\ **Last updated:** [7 August 2026 13:02 UTC](https://forum.ecmwf.int/t/discrepancy-in-rmm-index-calculation-inconsistency-between-the-rmm-index-calculated-using-era5-data-following-the-official-procedure-and-the-downloaded-mjo-2025-dataset/15200 "2026-08-07T13:02:31Z")
“I calculated the RMM index using ERA5 data (U200/850 + TTR) strictly following the official procedure, but the results are inconsistent with the ‘MJO\_2025’ data downloaded from the official website. Could you please adv… --- ## [New MJO reference data retrieval capability](https://forum.ecmwf.int/t/new-mjo-reference-data-retrieval-capability/15227)
**Author:** [@Joshua\_Talib](https://forum.ecmwf.int/u/Joshua_Talib)\ **Replies:** 0\ **Last updated:** [5 August 2026 09:19 UTC](https://forum.ecmwf.int/t/new-mjo-reference-data-retrieval-capability/15227 "2026-08-05T09:19:45Z")
Dear all, In addition to downloading training datasets, you can now directly download Wheeler and Hendon (2004) MJO reference data using: retrieve\_training\_data.retrieve\_MJO\_projection\_data(password) This function ret… --- ## [A question about 5-quantile bounds](https://forum.ecmwf.int/t/a-question-about-5-quantile-bounds/14566)
**Author:** [@Can\_Liu](https://forum.ecmwf.int/u/Can_Liu)\ **Replies:** 0\ **Last updated:** [4 January 2026 08:38 UTC](https://forum.ecmwf.int/t/a-question-about-5-quantile-bounds/14566 "2026-01-04T08:38:12Z")
Hi Josh, I encountered an issue while calculating 5-quantile bounds, which are used for generating labels for an AI model. I noticed a very small but consistent difference between the quantile bounds I generated and tho… --- ## [Question about Dynamical\_S2SDatabase RPSS Evaluation](https://forum.ecmwf.int/t/question-about-dynamical-s2sdatabase-rpss-evaluation/14544)
**Author:** [@Can\_Liu](https://forum.ecmwf.int/u/Can_Liu)\ **Replies:** 8\ **Last updated:** [30 December 2025 02:37 UTC](https://forum.ecmwf.int/t/question-about-dynamical-s2sdatabase-rpss-evaluation/14544 "2025-12-30T02:37:45Z")
Dear Joshua， I have a question regarding forecast evaluation. I implemented the RPSS evaluation code locally and conducted a test on the ECMWF S2S tas forecast for lead days 19–25, with an initialization date of 6 Novem… --- ## [Competition week 4 leaderboards are out](https://forum.ecmwf.int/t/competition-week-4-leaderboards-are-out/14248)
**Author:** [@Joshua\_Talib](https://forum.ecmwf.int/u/Joshua_Talib)\ **Replies:** 0\ **Last updated:** [10 October 2025 07:48 UTC](https://forum.ecmwf.int/t/competition-week-4-leaderboards-are-out/14248 "2025-10-10T07:48:21Z")
Good morning all, It’s exciting to see four week’s worth of evaluation scores on the AI Weather Quest website: Leaderboards • AI Weather Quest . Something I’ve noticed is that several variable-averaged scores are drama… --- ## [Visualisation of oceanic/desert points on forecast portal](https://forum.ecmwf.int/t/visualisation-of-oceanic-desert-points-on-forecast-portal/14115)
**Author:** [@Joshua\_Talib](https://forum.ecmwf.int/u/Joshua_Talib)\ **Replies:** 0\ **Last updated:** [27 August 2025 10:53 UTC](https://forum.ecmwf.int/t/visualisation-of-oceanic-desert-points-on-forecast-portal/14115 "2025-08-27T10:53:30Z")
Hello all, Currently the forecast portal visualises all grid points regardless of evaluation only taking place over land for t2m and pr. This is helpful for those teams that use oceanic sources of predictability, but no… --- ## [Connect Timeout](https://forum.ecmwf.int/t/connect-timeout/13995)
**Author:** [@Hitachi\_Wang](https://forum.ecmwf.int/u/Hitachi_Wang)\ **Replies:** 6\ **Last updated:** [13 August 2025 20:09 UTC](https://forum.ecmwf.int/t/connect-timeout/13995 "2025-08-13T20:09:23Z")
Hi there, Quick Question~ I’m having some issues when uploading the prediction results—it shows a connection timeout. requests.exceptions.ConnectTimeout: HTTPSConnectionPool(host=‘aiweatherquest.ecmwf.int’, port=443):… --- ## [Potential initialisation data](https://forum.ecmwf.int/t/potential-initialisation-data/13782)
**Author:** [@Joshua\_Talib](https://forum.ecmwf.int/u/Joshua_Talib)\ **Replies:** 6\ **Last updated:** [11 August 2025 10:34 UTC](https://forum.ecmwf.int/t/potential-initialisation-data/13782 "2025-08-11T10:34:38Z")
Hi all, As we continue with the testing phase of the AI Weather Quest, we wanted to highlight ECMWF’s open data catalogue. Here you have access the most recent IFS and AIFS operational forecasts. Data is available for t… --- ## [Error in downloading retrieve\_evaluation\_data](https://forum.ecmwf.int/t/error-in-downloading-retrieve-evaluation-data/13841)
**Author:** [@Mengxuan\_Chen](https://forum.ecmwf.int/u/Mengxuan_Chen)\ **Replies:** 6\ **Last updated:** [21 July 2025 15:13 UTC](https://forum.ecmwf.int/t/error-in-downloading-retrieve-evaluation-data/13841 "2025-07-21T15:13:30Z")
Hi, I am using obs = retrieve\_evaluation\_data.retrieve\_weekly\_obs('20250519', variable, password) to download weekly observation data. The password is the given password in the registered email. however, I encountered f… --- ## [Question about RPSS Evaluation](https://forum.ecmwf.int/t/question-about-rpss-evaluation/13039)
**Author:** [@Peng\_Lu](https://forum.ecmwf.int/u/Peng_Lu)\ **Replies:** 7\ **Last updated:** [15 July 2025 18:16 UTC](https://forum.ecmwf.int/t/question-about-rpss-evaluation/13039 "2025-07-15T18:16:24Z")
Dear Josh When I simulate using the first-week forecast data initialized on 2025-03-06 to calculate the RPSS value, both the observation data and the climatology data are set to 2025-03-24. I test Probabilities predict… --- ## [Climatology quintiles timeout](https://forum.ecmwf.int/t/climatology-quintiles-timeout/13027)
**Author:** [@Peter\_Harrington](https://forum.ecmwf.int/u/Peter_Harrington)\ **Replies:** 7\ **Last updated:** [14 May 2025 13:47 UTC](https://forum.ecmwf.int/t/climatology-quintiles-timeout/13027 "2025-05-14T13:47:20Z")
I am trying to use the retrieve\_20yr\_quintile\_clim method from AI\_WQ\_package, but my script just hangs at that point and then times out with the following error: File "/usr/local/lib/python3.10/dist-packages/AI\_WQ\_pac… --- ## [The detail of Climatological quintile boundaries](https://forum.ecmwf.int/t/the-detail-of-climatological-quintile-boundaries/13025)
**Author:** [@Peng\_Lu](https://forum.ecmwf.int/u/Peng_Lu)\ **Replies:** 2\ **Last updated:** [14 May 2025 00:45 UTC](https://forum.ecmwf.int/t/the-detail-of-climatological-quintile-boundaries/13025 "2025-05-14T00:45:06Z")
We are very grateful to ECMWF for giving us this opportunity to participate in the competition, and we have a few small questions that we hope to get some clarification on. Regarding the explanation of “Climatological … --- ## [\[Evaluation System Update\] Use of ERA5 for evaluating precipitation forecasts](https://forum.ecmwf.int/t/evaluation-system-update-use-of-era5-for-evaluating-precipitation-forecasts/11767)
**Author:** [@Joshua\_Talib](https://forum.ecmwf.int/u/Joshua_Talib)\ **Replies:** 0\ **Last updated:** [8 March 2025 08:34 UTC](https://forum.ecmwf.int/t/evaluation-system-update-use-of-era5-for-evaluating-precipitation-forecasts/11767 "2025-03-08T08:34:15Z")
:exclamation: Effective immediately, all forecasts will be evaluated against initial ECMWF Reanalysis version 5 (ERA5) release data (ERA5T) :exclamation: This change is necessary due to restricted access to MSWEP data f…