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Tropospheric
Modeling Studies of TRACE-P Field Data: Investigation of the
HOx/NOx/O3 Photochemical System
and Regional Assessment of Stratosphere-Troposphere Exchange
Principal
Investigator: Jim
Crawford (NASA
Langley)
Co-Investigators: Jennifer
Olson (NASA
Langley)
Duncan
Fairlie (NASA
Langley)
Brad
Pierce (NASA
Langley)
Matt
Hitchman (UW-Madison)
Greg
Tripoli (UW-Madison)
Deployment
Phase:
-Preliminary
photochemical modeling and data analysis activities will focus
on evaluating the data for consistency and providing the Science
Team with perspective on the photochemical environment as it is
being encountered in the field. As
in the past, we will respond to requests from individual investigators
for support in the interpretation of their preliminary data.
-Daily
forecast and analysis products from the University of Wisconsin
Nonhydrostatic Modeling System (UW-NMS) will include: (1)
synoptic and mesoscale atmospheric structure, e.g., frontal and
convective structure at much finer resolution than is available
from ECMWF or NCEP and (2) mesoscale air parcel trajectory histories
from air volumes sampled by the aircraft.
-Jim
Crawford will perform duties of Deputy Mission Scientist during
TRACE-P
Post-Mission:
-Photochemical
box modeling and data analysis will be used to examine photochemical
measurements (e.g., OH, HO2, CH2O, H2O2,
and CH3OOH).
-Time-dependent
box model calculations will be used to evaluate the photochemical
budgets of ozone and NOx.
-Trajectory
calculations will be used to explore issues related to the photochemical
evolution of Asian outflow.
-UW-NMS
simulations will focus on improving assessments of regional strat-trop
exchange. This will
include regional scale estimates for the mass flux across the tropopause
as well as evaluation of individual strat-trop exchange events
observed in UV-DIAL and in-situ data.
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