WMO is working on revising the Manual on GDPFS. This is whole overhaul from scratch. Now the Secretariat made the latest draft available online. It accepts comments from the member states by the end of July.
When the DPFS (Data Processing and Forecasting System) was created, the RSMC (Regional Specialized Meteorological Centre) and WMC (World Meteorological Centre) were both supposed to work on human-plotted weather charts. Now NWP (Numerical Weather Prediction) has overtaken most of the subjective analysis and forecast, so the centres (RSMC and WMC) are redefined to serve NWP products.
So I'm keen on the fate of present Attachment II-4 for graphical symbols of weather chart, including weather symbols (see my previous post). It won't be removed, but will be moved to the Manual on Codes.
2015-05-19
Monsoon (baiu) has come to Amami Islands
Today JMA announced the monsoon (baiu) has come to Amami islands, southwest side of Japan.
Attached is total precipitable water and wind vector at 700 hPa of 12UTC 18 May 2015 from NCEP analysis, visualized at earth.nullschool.net. Blue area illustlates most flow from Indian Ocean reaching Japan.
2015-04-27
Weather symbol for ww=07 (blowing dust/sand or blowing spray) and JMA's surface analysis chart
Effective 06 April 2015, Japan Meteorological Agency uses symbol like $/ℓ for present weather code ww=07 (blowing dust or blowing sand for land stations, or blowing spary for ship) on its Asia-Pacific surface analysis charts stamped ASAS http://www.jma.go.jp/en/g3/. Before that the symbol $ was used regardless the report is for land or for ship.
The ww symbols table have a story I wrote before:
http://toyoda-eizi.blogspot.jp/2014/11/changes-of-present-weather-symbols-for.html
http://toyoda-eizi.blogspot.jp/2014/11/changes-of-present-weather-symbols-for.html
On 1970 the Fifth session of the Commission for Synoptic Meteorology (FR ¶6.4.2.2) changed the symbol from $ to $/ℓ with a footnote:
When ww is coded 07, the symbol for blowing dust or blowing sand （$） is used if the observation originates from a land station, the symbol for blowing spay （ℓ） is used if the observation originates from a sea station.
When ww is coded 07, the symbol for blowing dust or blowing sand （$） is used if the observation originates from a land station, the symbol for blowing spay （ℓ） is used if the observation originates from a sea station.
On 1980 the Extraordinary session of the Commission for Basic Systems replaced the table with current one (as attached) in its Recommendation 7. The footnode above was removed at that time.
Final Report of CBS-Ext 2014 online (english/arabic/chinese)
The final report of the 2014 extraordinary session of the Commission for Basic Systems, held in Asuncion, Paraguay, is now available online:
Hungary's SYNOP BUFR contained operator 208035 before std sequence
On 16 April, ECMWF reported that SYNOP BUFR reported by Hungary contained operator 2-08-035 before the standard sequence 3-07-080. The operator affects the length of the first string element in the sequence, namely the name of station.
Everybody in the expert team IPET-DRMM shared the view that it is not plausible style of work, but this is not explicitly prohibited by the B/C1 regulation. I've made a question to ECMWF about what is acceptable for them, since it is also not nice to BUFR implementors worldwide to comment after their work. I hope it will serve as good rule of thumb:- a B/C template without extension, i.e. the section 2 consists of single sequence only.
- a B/C template followed by other descriptors
- if the extension contains local number, that must come with local table version number more than zero
Entire story can be traced at the thread:
https://groups.google.com/a/wmo.int/d/msg/cbs-ipet-drmm/o7ITsHaER24/QQzIh0MwM9sJ
[TDCF-migration] Spain terminates TAC SYNOP/TEMP/CLIMAT on 29 June
There was an announcement in WMO/CBS/IPET-DRMM.
https://groups.google.com/a/wmo.int/d/msg/cbs-ipet-drmm/ZdB7vrqO-98/XeuPBNIqQbQJ
https://groups.google.com/a/wmo.int/d/msg/cbs-ipet-drmm/ZdB7vrqO-98/XeuPBNIqQbQJ
2015-04-18
[WMO Codes] fast track amendment 2015-1 approved, to take effect on May 6th
WMO Operational Newsletter http://www.wmo.int/pages/prog/www/ois/Operational_Information/Newsletters/current_news_en.html says:
| ___________________________________________________________________________________________ |
| CODES |
| WMO No. 306 - Manual on Codes - Adoption of amendments by the fast-track procedure |
| In accordance with the fast-track procedure for the
adoption of amendments to the Manual on Codes, the Secretariat sent a
list of amendments to the focal points for codes and data presentation
matters for comments on 6 February 2015. No objections were received from the focal points. Additional entries to the Common Code tables C-5, C-8 and C-11 were proposed and these will be considered as minor adjustments and "will be done by the Secretary-General in consultation with the president of CBS" in accordance with the fast-track procedure. The president of CBS has approved the amendments, including the additional ones, on behalf of Executive Council for implementation on 6 May 2015. The amendments are available in English, French, Russian and Spanish. |
| Published: 17 April 2015 |
| ___________________________________________________________________________________________ |
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