Tropospheric Modeling Studies
of TRACE-P Field Data:
Regional Assessment of Stratosphere - Troposphere Exchange
Modeling Strat/Trop Exchange for
TRACE-P
Contact
Information:
Prof. Matthew H. Hitchman
Department of Atmospheric and Oceanic Sciences
University of Wisconsin - Madison
1225 West Dayton Street
Madison, WI 53706 USA
phone 608/262-4653
608/262-0166
email matt@aos.wisc.edu
FTP URL: 144.92.131.181 ("Andy")
The University of Wisconsin Nonhydrostatic Modeling System
(UWNMS) will be used to provide meso- to synoptic scale forecasts
of meteorological variables and idealized tracers for flight
planning purposes, as well as post-mission for interpretation
of observations. The model was constructed and is maintained by Professor Greg
Tripoli. It has
been used for field support for the POLARIS and SOLVE/THESEO
campaigns. Details of the model may be found at mocha.meteor.wisc.edu.
With 400 m vertical resolution and 55 x 55 km horizontal resolution
we achieve a 4:1 time compression for a domain spanning 10-50N,
100-170E (includes Lake Baikal, Phillipines, and Sea of Okhotsk).
Our primary product in the field will be one VIS5D file
of a 60 hour model forecast using NCEP aviation forecasts on
the boundary, to be made
available by 11 am local time the day before each flight. This
file will be approximately 60 Mb, downloaded from andy.meteor.wisc.edu
(144.92.131.181) by binary ftp to a laptop in the field. Primary
variables in the VIS5D file will include horizontal and vertical
winds, temperature, pressure, relative humidity,potential temperature,
potential vorticity, and the following tracer fields:
1) initialized
linear decrease from 1 at the surface to 0 at the model top near
24 km,
2) ozone
initialized from aviation model ozone in the stratosphere blended
with the Langley PV-correlated ozone in the troposphere provided
by Brad Pierce,
3) same
ozone as in 2) but set to zero below the model PV-defined tropopause,
4) pseudo-CO
using monthly mean source and the Langley PV-correlated CO in
the troposphere provided by Brad Pierce.
Secondary products will include simulated flight track
curtain profiles of selected variables and back trajectory parcel
histories intersecting the anticipated flight track. These
secondary products will be created in the field on a near-automatic
basis. We would
be ready for discussion by 12 noon local time on the day before
each flight.
It would be useful to have a television to show the VIS5D
movies from the laptop for flight planning purposes (we will
bring the connection hardware). A
color printer, black and white printer on a local network, and
an overhead projector would
also be useful for presenting analyses at science team meetings.
For each HongKong flight Marcus Buker, Brad Pierce, and
Matt Hitchman will create UWNMS forecasts to
be sent to Duncan Fairlie for interpretation in the field.
For each Yokota flight Marcus Buker and Matt Hitchman
will initiate simulations from the field to be run on Andy in
Madison, integrating CO and ozone from Brad Pierce, then interpreted
in the field by Matt and Marcus.
NASA LaRC / UW Field Products for TRACE-P
Contact: Duncan Fairlie (LaRC)
t.d.fairlie@larc.nasa.gov
Tel.
757-864-5818
UW: Meteorological
Forecast Products:
48-hour forecasts from the University
of Wisconsin nonhydrostatic modeling system (UW-NMS) valid for
flight days and available 24 hours before the flight. Products
include temperature, wind, specific humidity, potential vorticity.
Forecasts
of boundary layer and stratosphere airmass tracers.
Back
trajectory meteorological history information from prospective
flight track.
LaRC: Isentropic analyses based on NCEP Aviation model
(AVN) forecast products, trajectory analysis, 3-D model and satellite
climatologies: *
3-D ozone reconstructions based
on AVN forecast products, satellite, sonde and DIAL ozone observations,
and PV mapping.
3-D CO reconstructions
based on AVN forecast products, backtrajectory calculations,
and a 3-D LaRC IMPACT model CO climatology.
Reverse-domain-filled (RDF) predictions
of strain/rotation (Q), potential vorticity (PV), airmass origin
(e.g. geographic, boundary layer, stratosphere).
RDF predictions of CO exposure,
based on AVN forecast products and CO source distributions (EDGAR
database of industrial emissions/ Galanter et al., 2000, biomass
emissions).
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Data format: digital
image
Data Volume: 60
Mbytes/day (max)
Data transfer mode: ftp/
web page download
Field site download: 8:30
am
Onsite analysis time: 3.0 hours (including download time) (estimate)
Onsite display: laptop/
color printer (CAVE possible but
not required)
Onsite data handler: Fairlie
Data access: ftp
kelvin.larc.nasa.gov
Requirements: color Printer,
B/W printer
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