ST MEETING 21 July, Forecast for 22 July - DOY 203

Hi Trish. First priority for C130's tomorrow's daytime flight is 
CLEARCOLUMN over ship. Our best (model) estimate for a clear area is 40N
12W. We will have to be very lucky to have both polluted and clear
skies. We send you an update after having seen sat. data tomorrow
morning. Would be nice to have some info on what you have found accross
transect re. pollution and cloudiness by the meeting tomorrow at 0645Z.
Wednesday looks good for a full polluted LAG. Ciao Frank.
  

ST meeting 0721  Monday

Meteo Outlook

DAY N+1 Upper levels: Trough line from S Ireland to N Canaries, moving
E. SW
winds increasing over the African coast. Rising air over ACE2 area,
tending to subside over the W of the area, during the day. Low levels:
Anticyclone 1028 hPa W of Azores, extending N to Ireland. Thermal low
over N Africa, extending and connecting with the second one over Iberian
Peninsula. Winds from NE 10-15 Kts, weakening towards Cadiz Gulf. Cu and
Sc, broken to covered over the E of the ACE2 area and scattered to
broken in the W, also middle and high clouds over E of the ACE2 area.
MBL rising up and increasing cloud thickness. Possible rain N of
Canaries and around Sagres. 
DAY N+2 Upper levels: The trough keeps moving E,
crossing the Iberian Peninsula, bringing NW winds and subsiding air over
ACE2 area. Low levels: The anticyclone over Azores spreads to the NE,
connecting with a high pressure area N of British Isles. Thermal lows
over N Africa and the Iberian Peninsula being removed by the
anticyclone. Winds from the N at 10-15 Ks on the average, weakening
towards Cadiz Gulf. MBL level lightly increasing as cloud thickness, but
decreasing by the end of the day. Cloudiness decreasing around Sagres an
Cadiz Gulf and. No changes for the west part of ACE2 area. Possible
light rain in N Canaries.
DAYN+3,N+4
Both days: Anticyclone extending from W Azores to Iberian Peninaula with
subsiding air over the whole ACE2 area. Winds moving around the high
pressure center, becoming E in the N of the ACE2 area on N+4. Low
levels: Anticyclone over Azores moving E and extending over Iberian
Peninsula. Winds from N and NE 10-15 Kt, increasing to 20 Kt in N of
area on N+3 and weakening to 10 Kts on average for N+4. Clear to
scattered skies over coastal areas in the E of ACE2 area, increasing
cloudness to the W. MBL decreasing.

Operations

Mon
1. 2nd Successful CLEARCOLUMN over Sagres in polluted ai rmass
2. Full LAGARNGIAN delayed, because European pollution outbreak stayed
closer
to  the Portuguese coast than expected. Ship stays at 40N, making
racetracks.

Tue
3. 0645Z ST meeting to discuss two options for C130
- CLEARCOLUMN over ship with C130 (first priority)
- Joining CLOUDYCOLUMN Transect eastwards, from clean to polluted clouds
4. Possible start of 3rd LAGRANGIAN between 2000 and 2400Z from 40N

Wed
5. Most likely start of 3rd LAGRANGIAN between 0800 and 1200Z from N

General.
-Jos Lelieveld will present Citation FREETROPE data on Tuesday