Issues due to data acquisition or transmission may appear during polar operations. Here, we report on known issues that in particular were noted during YOPP Special Observing Periods.
Please report any additional issues to firstname.lastname@example.org.
- Another outage of the Canadian buoys in the Arctic was noted on 2019-03-09 12UTC. Data transfer came back on 2019-03-12, and the missing data has been sent to the GTS.
- Data from buoys north of Canada were not ingested because BUFR codes were changed on 1 August 2018. ECMWF has retrieved the observational data from 1 to 17 August.
- For radiosondes released near the pole (e.g., from Oden 2018 expedition), the v component of wind changes sign quickly which can cause problems. ECMWF takes into account the change in dropsonde position at 25 min intervals so these does not cause any problem in the operational analysis.
Use the following links to check yourself if certain data has been ingested:
- Radiosonde (temperature): https://www.ecmwf.int/en/forecasts/charts/obstat/temp__hist_0001_plot_o_hist_temp?facets=Category,Conventional%20Data%3BParameter,Temperature&time=2018070500&Datatype=RADIOSONDES&Layer=0-400hPa&Area=North%20Polar
- Radiosonde (wind): https://www.ecmwf.int/en/forecasts/charts/obstat/windspeed__hist_0001_plot_o_hist_windspeed?facets=Category,Conventional%20Data%3BParameter,Wind%20speed&time=2018070500&Datatype=RADIOSONDES&Layer=0-400hPa&Area=North%20Polar
- Buoys (surface pressure): https://www.ecmwf.int/en/forecasts/charts/obstat/pressure_all__hist_0001_plot_o_hist_pressure_all?facets=Category,Conventional%20Data%3BParameter,Surface%20pressure&time=2018070500&Data%20type=Drifter%20buoys&Area=North%20Polar