TReC Target Area Selection conference - Confirmation of actions


Conference time: 200311291600

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Case Identifier:      trec_023
verification region:   Southern Europe
sub region:            centre 45N 9E
verification time:     2003120312 (Wednesday)
observation time:      2003113018 (Sunday) 
priority:              high

Sensitive area calculations from Met Office, ECMWF, NCEP.

Summary:  Todays calculations agree with those of yesterday. No reason
to change requests.


Selected target area: (25-45N,5-35W) and (45-65N,15-65W)

Request for obs: 

24-hour confirmation for radiosonde stations in above areas

24-hour confirmation for ASAP ships in above areas

(AMDAR already on for  45-65N,10-60W)

24-hour confirmation for GOES rapid scan winds centred 45N30W

24-hour confirmation for G-IV flight from St Johns. No word yet from
ATC, but may have to fly shorter track. Alternatives to consider: 
  i). to 59N37W then 59N52W
  ii). to 58N35W then 58N52W

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Case Identifier:      trec_023
verification region:   Southern Europe
sub region:            centre 45N 9E
verification time:     2003120312 (Wednesday)
observation time:      2003120118 (Monday) 
priority:              high

Sensitive area calculations from Met Office, ECMWF (no Hessian SVs
available), Meteo-France, NCEP.

(Same verification time and area as above, but observations on Monday
1st Dec.) 

Summary:  

ECMWF and Meteo-France dry TE SVs have main sensitivity S Spain to N
Africa. Moist TE SVs extend further N. Met Office sensitive area from N
Spain/Portugal to W of Ireland, to 15W. From signal variance evolution
the South of this area and S past Gibraltar is the area from which
sensitivity evolves into verification region, consistent with SV
results. NCEP combined has additional sensitivity around 60N30W at 12
UTC, but much lessened by 0 UTC on 1st (the signal variance from 60N30W
12UT does not grow into verif region). Main sensitivities convered by
box 30-50N,15W-5E, though expect main sensitivity S of 45N.

Selected target area: 30-50N,15W-5E

Request for obs: 

48-hour warning for radiosonde stations in above area
48-hour warning for GOES rapid scan winds over above area

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Case Identifier:      trec_023
verification region:   Southern Europe
sub region:            centre 45N 9E
verification time:     2003120412 (Thursday)
observation time:      2003120118 (Monday) 
priority:              high

Sensitive area calculations from Met Office, ECMWF, NCEP.

(Same verification area as above, but observations on Monday 1st
Dec., verif on Thursday 4th Dec) 

Summary:  Main Met Office area Spain to Ireland as for calculations
verifying on Wednesday. From signal variance evolution, main signal
through verification region comes from area near coast of Portugal and
this has main impact on Wednesday, little remaining impact on Thursday. 
Area over E Canada probably spurious; NCEP combined supports this - main
signal is nr Europe.

No specific requests for this. Already covered by above request for
Monday observations.

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Conference chaired by: David Richardson

Participants: Steve Randall (Met Office),  Bruce Truscott (EUCOS),  Jean
Ruffie (Meteo France), Zoltan Toth (NCEP),  Mel Shapiro (NOAA)

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Next conference: 20031130 0900 UTC 

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     Note: pm conference at usual time of  16:00 UTC Sun 30th November
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