ST MEETING 23 June, Forecast for 24 June - DOY 175

ST meeting 0623 Monday

Meteo outlook
DAY N+1, N+2
For the next two days no changes are expected. In the upper levels continues the weak
flow over the area, and in the lower, the anticyclone with 1028 Hpa is centered over
Azores, dominating the ACE-2 area. This results in winds around 15 kts from the N in
the North part of the area, and around 17 kts from the NE in the southern part.
Clouds range from small scattered cumuli SE of Sagres, broken cumulus in the middle
of the area to broken layers of stratocumulus North of Tenerife. Clear sky over Sagres
and probability of drizzle over North of Tenerife. Clean and subsiding flow over the
whole area. The top of the clouds can raises lightly. 

DAY N+3, N+4 
Although a new low is over England and the anticyclone center is between Island and
Azores, it doesn't affect the ACE-2 area, and the weather expected is similar to the last
days. Clear sky over Sagres, small scattered cumuli SE of Sagres, broken cumulus in
the middle of the area and broken layers of stratocumulus North of Tenerife. Probability
of drizzle over North of Tenerife. Clean and subsiding flow over the whole area. NE
winds around 15 kts.

Operations

Today
1.  Pelican to performed CLEARCOLUMN (Task 1.3). Now have performed
sufficient clear air profiles including
- nepholometry-size distribution closure studies
- observations of nucleation
- optical depth measuremnets
2. C130 on the ground. MRF presented qualitative observations S of
Islands.
Compared to N. of Islands there were equal PCASP readings, higher total 
particle conc., higher
cloud droplet conc. More quantitative analysis follows.
3. Ship steamed from mid race track to 200 km S of Sagres. Has
encountered transition
clean to polluted air mass

Tuesday
4. C130 has engine problem which will be repaired only in the afternoon.
5. ST proposes to proceed with clear LAGRANGIAN between SO5 and ship,
without  C130
and WITHOUT releasing the tetroon. Ship at 35N00' 9W00' (best according
to forecasted traj.)
until 12.00 UTC. Then go back on racetrack to characterize the
anthropogenic plume.
6. Pelican on the ground 
7. Merlin to do FSSP intercomp. with MRF,Citation and Merlin FSSP's.

Wednesday
7. Start for full LAGRANGIAN will depend on how polluted and how
homogeneous the plume
is found to be by the ship