ST meeting 0701 Tuesday

Meteo outlook
DAY N+1:Upper levels: The cold low over the British Islands is
stationary and it has a trough-line between Azores and Canary Islands.
Clean air is advected everywhere over the area. Low levels: The
anticyclone of 1028 mb is north of Azores moving southwestward, but this
day winds will still be weak. Clean and slightly subsident air will be
advected all over the area. Scattered cumulus clouds over the whole
area. Northerly winds around 12 kts at north of the area and 8 kts at
south. MBL stationary, decreasing at the end. 
DAY N+2: In the upper levels, the situation is quite similar to last
days, advecting clean and slightly subsident air over the whole area. In
the low levels, the anticyclone is over Azores, and this produces clear
sky over Sagres, increasing cloudiness from north to south, with mostly
clouds of stratocumulus over Madeira and Canary Islands. Posible rain at
north of Tenerife. The MBL-depth will decrease. Wind from north at the
north edge of the area and from northeast at the south around 15 kts.
Clean and subsident air will be advected over the whole area. 
DAY N+3: Upper levels: The cold low over the British Islands is moving
eastwards and a ridge from the west is moving eastward too. The general
circulation is now north of the ACE-2 area. Clean and subsident air all
over the area. Low levels: The 1028 mb anticyclone over Azores is moving
slowly eastwards and reforcing to 1032 mb. This produces increasing
winds from northeast over the whole area (from north at the north edge
of the area). Clear sky over Sagres, increasing cloudiness from north to
south, with mostly clouds of stratocumulus over Madeira and Canary
Islands. Probably rain at north of Tenerife. Winds around 20 kts. MBL
stationary or light decreasing.

Operations

Tuesday 
1. Citation hunted for Montserrat volcano plume, but did not find it. No
traces of it in
 IZO/TNS LIDAR signals either.
2. Clear COLUMN flight by Pelican
3. Coordinated Merlin/Pelican legs for PCASP/CPC/CCN intercomparisons
successful,
    MRF PCASP on Merlin.
4. No coordinated measurements between ship & Sagres because of bad
weather

Wednesday
5. Coordinated meas. between ship and Sagres till 1500Z
6. No A/C coordinated actions

Thursday/Friday
7. 3 A/C CloudyCOLUMN (with Pelican)
8. C130/Pelican radiometer intercomparison, not concurrent with
CloudyCOL.
9. Ship on trajectory connecting with Tenerife.

Saturday/Sunday
10. Getting ready for operations related to expected European pollution
outbreak. Sagres must be fully operational from Friday onwards

General 
- Lynn Russell will give a short presentation on entrainment at
Wednesday's ST meeting

Attention Robert Frouin onboard R/V "Professor Vodjanitskiy.

I am sorry to inform you that:
ADEOS is definitively out of working from June 30.
Validation of POLDER observations using SIMBAD measurements acquired during
ACE-2 is no more a priority.

Best. Pyd.

************

Pierre-Yves Deschamps
Laboratoire d'Optique Atmospherique
Universite de Lille