Science Objectives
Chris: From the P3, use AXBTs, take temp and humidities of the
sonde profile and deduce SST. 190 sondes from G4 in Feb but no
SSTs. For a couple of wind regimes. Something post cold-frontal
ideal. From sondes get surface flux estimates.
Marty: Total IVT for AR transport (whiteboard drawing).
Transects and dropsondes from all data only 10 cases where
data was available all the way to the “edge”. Where priority
and opportunity are available go a little further – cover
range of 2 to 20 cm. About 150km spacing.
Chris: AXBT drops
Chris/Sue/John: Currents measured by ADCP for
0-100m
Sue: post flight objective; AR drops rain and some is flushed
out to sea (especially over coastal areas). How much of that
contributes to ocean temperature change after event. Ron
Brown will have salinity measurements. From coast to west
of RB. How coupled ocean/atmosphere boundary layer
changes; relax back to stable regime? Lag time for this?
Perhaps prior to next event (2-3 days before fcst event)
Question: P3 #? Channel – need to check with Peter.
Need to bring back up receiving system? No – there
are 3 on board. But they are all the same channel.
Sondes are multi-frequency. AXBTs come at one
frequency.
Question: G1 coastal transect of interest during
precipitation? Looking for aerosols in post AR
conditions? Expect not many left (if good AR). During
precipitation have flight module for P3 – may
coordinate. Have done post-frontal.
From CalWaterI have Sierra-specific cloud type goals.
Paul budget boxes: with transects – joint
G4/P3 objective. Higher spatial resolution – go
further north to capture tilt up to jet-level
Chris: needs wrist-decision tree aka Aaron Rogers. Ryan
wants that on the play list. Last time was highly flexible; 2
flights out of Honolulu. Route to Anchorage. Different
strategy. This time would have to be motivated by ?
Desperation?
Ryan: west coast to Honolulu about 2 hours of science available
Chris: get Jim Doyle to develop concept for his adjoint
model; test adjoint model to get obs 5 days ahead of time.
Other adjoint sensitivity studies ? Develop some kind of
module with keys for that.
Marty: (whiteboard) Frontal wave (1); position (2); vorticity
max (3) – look for these to identify aspects of forecast models
/ products
Chris: GFS – is the data getting into the forecast models?
From aircraft checks are being made. They look for warning
that the data is coming (Jennifer). Does NCEP assimilate?
Can NCEP be influenced to keep data during assimilation?
Helpful for adjoint sensitivity (Sue) – if sondes get into GFS
then can monitor the COAMPS for improvement. Sue could
check that ship sondes are getting into GFS. Sue can check
with NCEP. During Dynamo Revelle sounding showed up but
Chris thinks steps were taken to be sure they showed up.
Chris will e-mail Sue to check if data showed up.
Ryan: question for Chris – coordination with RB – how does
MAC connect with ship ? Can send e-mail. There are
satellite phones on the ship. Sometimes not effective
bandwidth to do effective go-to-meeting. Can’t use Skype.
Maybe instant message? Time zone of operation ? Should
be within an hour of Pacific time. Usually change on the
ship as they move through time zones. How often for tele
conference? Daily weather briefing every day. Call from
forecast center to ship at minimal level (each day after
briefing)? Expect to have more than two nodes – calls from
several sites into weather briefing. Need dedicated
conference line – set up long-standing webinar (Roger).
Can be dedicated for 6-10 weeks and can be used at any time.
A number of folks can have leader code – Jon Rutz will take
lead on investigating this. Can get 100 people on webinar.
Late day ad-hoc briefing Chris: on the ship want to know when the aircraft will be
visiting. Also have ideas of winds and seas. Ship can
communicate with aircraft via x-chat. Fun for ship to see
aircraft go by.