ST MEETING 28 June, Forecast for 29 June - DOY 180
(It appears the date below is incorrect)


Dear shipmates. We understand your distress and I wish I could do
something to
cheer you up. We are getting all quite disappointed by what the weather
does since the beginning of 
ACE-2. 
Keep sampling as much as possible during your approach of  Sagres from
the NW,
since the air passing the ship also passes over Sagres and it is the
homogeneous subsiding air mass 
we'd have followed in the Lagrangian. 
The anchor positions you indicated would be OK for a clear LAGR if the
air comes from the NE.
Now its from NW and I'd suggest to sample either NW of Sagres or SE of
Sagres as long as 
needed before you can get into Sagres on Monday. Clearance should be OK
but I will confirm as soon
as Sagres tells me.
Sagres asks you to do water leaving radiance measurements tomorow Sunday
between 1100Z and 1200Z
since there is an ADEOS pass over the area. Note also the volcano. The
plume will probably past
south of ACE-2 but the Lidars should watch it.
Keep the faith: we still have 4 weeks to go. Frank


ST meeting 0627 Friday

Meteo outlook
DAY N+1: Aloft cold low over France; another one over Azores; ridge W of
Canarias;
subsidence over the whole area; W to NW winds quite strong; clean air 
advected everywhere. 
Low levels: Low E of France; another one over Azores; high NW of Azores;
prevailing 
NW winds on the northern part, NE on the southern, but quite weak
everywhere. 
Clean air arriving at Tenerife; although some trajectories over Sagres
come from near
Ireland and U.K. air must also be considered clean. Scattered to broken
cloud deck, 
mainly cumulus on the northern part, including Sagres and ship, and
stratocumulus on the 
southern, including Madeira and Tenerife. Isolated rainfall, more likely
at the north. 
MBL-depth no changing significantly, growing something over Tenerife.
DAY N+2: Aloft low near Azores moving eastward affecting ACE-2 area; W
and SW winds 
quite strong; strong upward air movement NW of Madeira; clean
airadvected everywhere. 
Low levels: low near Azores with frontal system moving eastward
affecting central and southern 
part of area; prevailing variable weak winds, turning counterclockwise
around Azores and 
Madeira. Overcast with rainfall around Azores and Madeira, also possible
isolated thunderstorms;
scattered to broken, mostly of stratocumulus, on the remaining area.
Clean air advected 
everywhere. MBL rising around Azores and Madeira.
DAY N+3: Low around Madeira affecting the middle part of ACE-2 area,
with prevailing 
upward movements; lot of cloudiness and rainfall between Madeira and
Sagres. Winds turning 
counterclockwise around the low at all levels. Advected air most likely
clean everywhere. 
The front associated to the low could affect Tenerife from the west. Day
N+4: the low tends 
to fill, and a strong anticyclone to develope near Azores re-establising
anticyclonic circulation 
overACE-2 area.

Operations

Today
1. Clean full LAGRANGIAN was called OFF at 0700Z based on the
trajectories available at 
0200Z. A Low is approaching  the ACE-2 area much faster than predicted
during the last two 
days. This caused a rapidly changing situation which didn't allow a safe
initialization of the 
experiment. 
2. Citation test flight
3. Reports of volcano eruption on Montserrat (Caribbean) on 25 June
(height 30.000ft) and 26 June 
(height 20.000 ft). Windows of ACE-2 forecast to be enlarged to predict
movement of the clouds 

Sunday
4. Clean and unstable conditions over ACE-2 area
5. Pelican clean CLEARCOLUMN flight

Monday/Tuesday
6. Clean and unstable conditions to remain over ACE-2

Wednesday
7. Re-establishment of  High of Azores expected to commence.