ST MEETING 20 July, Forecast for 21 July - DOY 202

Trish. According to our meteorologist the 'front' of the pollution will
be at 40N at 0100Z tomorrow Mon.
(He is playing his reputation here, which is very high). So we expect
you to encounter increasing pollution levels from 0100Z onwards. We
suggest you prepare for a 1st balloon release at 0530Z, but if levels
still increase you can delay till at most 0800Z. We will be waiting for
yr email re. The 1st balloon launch before we let the C130 take of.
Follows the schedule for a release at 0530Z at 40N 11W30'.
I bought my ticket for Lisbon! Will arrive 1655 Local with flight from
Madrid. Would you pick me up, or
should I go to some place? Frank 

UTC
0530: launch 1st balloon: email to OpsC
0630: take off C130
          release 2nd balloon
          start release PFC's
0730: 3rd balloon, if possible
0830: arrival C130 above ship
0930: latest launch 3rd balloon.

You might do a sounding around 0500Z to adjust the ballast.
Follows Randy's instructions

Shane:

Set flying altitude at 300 meters
Min altitude at 200 Meters
Max altitude at 400 Meters
Shorten ballast line by 100 yards
I will adjust flying alt. later if necessary




ST meeting 0720  Sunday

Meteo Outlook

DAY N+1,N+2:Upper levels: A Trough-line begins to build-up between SW
Ireland and W
of the Canary Islands, deepening for N+2 and moving slightly to the E.
Winds from NW in the W of the ACE2 area backing to SW in the E. Slight
subsidence still for the N+1 and upward movements for the N+2, mainly in
N ACE2 area. Low levels: the Anticyclone weakens over the Iberian
Peninsula as a secondary low builds-up. Wind NE and N at 15-20kts. MBL
steady at the begining, around 900 m, but it could start deepening by
the end of N+1, for N+2 the MBL-top will rise, as well as cloud bases
and tops as the Trough between Canaries and Azores becomes deeper.
For the N+1: clear skies over Sagres, Gulf of Cadiz and N ACE2 area
increasing to scattered/broken to the S  with Cu and Sc and becomig
broken/overcast with Sc around Madeira and S to the Canaries. Clouds
bases around 600-700 m probably rising slightly by the end of the day.
For N+2: increase in cloudiness in the E and NE of ACE2 area, almost
overcast over Madeira and NW ACE area. Some showers or thunderstorms are
possible for Sagres and NE ACE2 area. Some rain is also possible N of
Tenerife by the end of N+2. Anthropogenic air over Sagres area and N
ACE2 area both in the MBL and Low FT moving to the SE. Clean over
Tenerife in the MBL and FT the MBL and FT. 

DAY N+3. Upper Levels: Trough-line from Ireland to the Canary  Islands
moving E and weakening. Subsidence over Central an S ACE2 area and
rising air over the E and NE. Low levels:  High Presure area from SW
Azores to Scandinavia. Thermal low over N Africa extending over the
Iberian Peninsula. Winds from the N, 15kts on average. Instability over
the Iberian Peninsula where some showers and thunderstorms are possible,
even in the Sagres area. Scattered/broken with Cu and Sc over Sagres and
Portuguese Coast, increasing to broken layers of Cu and Sc over the W
and S, including Canaries, almost overcast over Madeira and NW ACE2
area. Light rain is possible N of Tenerife. MBL will remain deep but
will begin to decrease by the end of the day. Cloud bases in Tenerife
around 900-1000 m, occassionally 700 m. Anthropogenic air over the N and
E of ACE area in the MBL and low FT, probably Clean in the W and S of
the area.
DAY N+4: Upper levels: trough over the Iberian Peninsula, weakening and
moving East. Ridge from Ireland to NW of the Canaries. Subsidence over
the whole ACE area. Low levels: Anticyclone of 1028 Hpa over Azores
including the Iberian Peninsula. Low over the Mediterranean and S
France. Winds from the NE, 10kt on average.  MBL decresing ,cloud bases
in Tenerife close to 700 m. Clear/Scattered  skies over Sagres and E of
ACE area, increasing to broken over Madeira  and Canaries.

Operations

Sunday
1. Successful CLEARCOLUMN near Sagres with C130. Pollution layer till
3500 m (or ft?)
2. Start LAGRANGIAN delayed till tomorrow

Mon
3. Start Full LAGRANGIAN between 0530Z and 0800Z
4. After Balloon release ship to go to Sagres, to arrive Tuesday at
noon, for work near Sagres

Tue
5. Possibility for CLOUDYCOLUMN Transect eastwards, from clean to
polluted clouds
6. Coordinated work (CLEARCOLUMN?) with  Ship and  Sagres

Wed/Thu/Fri
7. Possibility for coordinated work with C130 near Sagres.

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