ST MEETING 02 July, Forecast for 03 July - DOY 184
(It appears the date below is incorrect)


ST meeting 0701 Wednesday

Meteo outlook

DAY N+1: Similar situation than day N. Upper levels: Cold low over
British Islands with
trough-line along Portuguese-coast; ridge over Northern Atlantic;
prevailing upward air
movements over Portugal and Sagres, and subsidence over the remaining
area; NW and W
winds. Low levels: Low over British Islands with tendency to fill, and
high of 1028 mb over
Azores, reforcing; NW winds north of Sagres latitude, 10 Kt on average,
veering to NE
southward with 15 Kt on average. Clean air advected everywhere, except
perhaps over Sagres in
the MBL, since 975 trajectories hug Iberian Peninsula. Broken of cumulus
with some rain
north of Sagres latitude, and scattered to broken, mainly of
stratocumulus, over the remaining
area, with amount increasing from Sagres to Madeira and Canarias; still
possibility of some
rain north of Tenerife. 
DAY N+2: Upper levels: Ridge NE of Azores creating subsidence over
the whole area, strong around Portugal; prevailing NW winds. Low levels:
low over England
filling, and high of 1032 mb N of Azores, reforcing and moving to NE,
gradually favoring an
european polluted-air outbreak; winds from NW at northern area, 14 on
average, N at Sagres
latitude, and NE southward with 20 Kt on average. Still clean air,
except over Sagres in the
MBL, since trajectories below 800 mb hug the coast of the Iberian
Peninsula. 
DAY N+3, N+4: The high is reinforcing and moving toward NE, most likely
resulting in an european
polluted-air outbreak over the area in the MBL. At surface quite strong
NE winds (20 Kt on
average) blowing off the Iberian Peninsula. MBL-top will notably
decrease (to about 1000-1200
meters) due to both subsidence and warm advection above 800 meters.
Clear skies over
NW-Africa, Sagres and Portugal, and also over about 400 KM off-shore
from these zones; then
stratocumulus cloud-deck increasing southwestward, toward Canarias and
Madeira.
Furthermore, above 800 mb winds tend to blow from Africa, so a dust
outbreak is possible in
the FT above this level. 

Operations

Today
1. First complete HILLCLOUD from 0000 till 0600Z. Clean conditions
2. Coordinated meas. between ship and Sagres till 1500Z
3. Possible detection of volcano plume by IZO LIDAR. Check needed.

Thursday
4. Clean full LAG planned to start around 2200Z, with ship as North as
possible on 11W00', 
but not exceeding 40N00'.
5. Feasibility of CloudyCOL (with Pelican) to be discussed in morning
6. Citation flight, possibly looking for volcano plume: coordination
with IZO/TNS

Friday
7. Continuation planned full LAG.

Saturday/Sunday
8. Expected to be transition days between clean and polluted air masses
over ACE-2 area.

Monday
10. Possible start of polluted full LAG. Flight by ARAT  to make 
LIDAR cross section of European plume.  Date should be transferred to
Ops. C. before 
first C130 LAG flight.

General
HILLCOUD to communicate with IZO after their evening meetings, in GO
situation