stratosphere-troposphere analyses of regional transport (start) experiment
DESCRIPTION
Stratosphere-Troposphere Analyses of Regional Transport (START) Experiment. Investigators: Laura Pan (PI, ACD/TIIMES) Ken Bowman (Texas A&M) Mel Shapiro (NOAA/NCAR M M M ) Bill Randel (ACD) Rushan Gao (NOAA) Teresa Campos (ACD/EOL) Chris Davis (MMM) Sue Schauffler (ACD). Collaborators: - PowerPoint PPT PresentationTRANSCRIPT
Stratosphere-Troposphere Stratosphere-Troposphere Analyses of Regional Transport Analyses of Regional Transport (START) Experiment(START) Experiment
Investigators:Investigators:
Laura Pan (PI, ACD/TIIMES)Ken Bowman (Texas A&M)Mel Shapiro (NOAA/NCARMMM)Bill Randel (ACD)Rushan Gao (NOAA) Teresa Campos (ACD/EOL)Chris Davis (MMM)Sue Schauffler (ACD)
Frontal Cloud - flt 2005-12-14
Collaborators: Collaborators:
Chris BarnetJennifer Wei(NOAA/NESDIS Satellite data)
Satellite data support:
Sylvia Murphy (ACD)
Acknowledgments:
Jorgen JensenAl Schanot
Al CooperJeff Stith
Henry Boynton, Bob Maxson, Lowell Genzlinger and Ed Ringleman
Rit CarboneBrian Ridley
Enter the Rockies - FLT 051209
Upper Troposphere & Lower Stratosphere - A region of coupled dynamics, chemistry and cloud
microphysics
HIAPER Progressive Science Mission(22 November- 23 December, 2005)
Daybreak before take off 2005-12-21
NASA A-Train Satellites
Science Objectives
Low pass of Rockies- Flt 2005-12-07
• Characterize the dynamical structure of the extratropical tropopause in and around the subtropical jet
• Identify the chemical transition from the troposphere to stratosphere across the extratropical tropopause.
• Investigate the irreversible STE & mixing produced by multiple scale dynamical processes
AIRS Ozone on 250 hPa (in 1x1 degree average)
May 15, 2004 Monthly mean May, 2004
AIRS Ozone Cross Section (1x1 degree average)
May 15, 2004, Lon=160 E
Tropospheric tracer
Str
ato
sph
eri
c tr
ace
r
Stratosphere
Troposphere
Stratospheric tracer
Tropospheric tracer
Alt
itu
de
TP
Chemical Transition using Relative Altitude (RALT) and Tracer-Tracer Correlations (TTC)
Tropopause or transition lyr
Example : NASA ER-2, POLARIS July 10, 1997
[Pan et al., 2004]
CO (z)
CO (pv) CO (RALT)
The “Relative Altitude Coordinates” (to locate the chemical transition between St-Tr)
[Pan et al., 2004]
ER-2 data O3-H2O (POLARIS)
WACCM3
1.9x2.5
4x5
Model Evaluation
• Four successful flights (7-9 hour each, out of 6 planned)
• Measurements: O3, H2O, CO, in addition to
meteorological parameters (and other possible tracers such as CN)
• Near real time satellite data via collaboration with AIRS science team
• Sampled several cases of stratospheric intrusion
• Obtained information on mixing and STE• Valuable data for AIRS ozone validation
START Experiment Highlights
Meteor Crater - Flight 2005-12-07
Status of Data and Data Analyses
• Ozone data became available during the experiment. Intercomparison with CMDL ozonesonde show excellent agreement.
• Initial analyses and comparison with satellite data, meteorological analyses data have been carried out
• Water vapor preliminary data became available ~ 2 weeks ago, further calibration in progress
• CO data is still under Q/C verification• Trajectory analyses in progress
Ozone Validation with CMDL Ozonesonde
START Flight #2 (502RF03 -051207)
Flight RF03 - 2005-12-07
START Flight #2 (RF03 -051207)
Enhancement of Ozone at Lower Troposphere due to the Intrusion
START Flight #4 RF08 - 2005-12-14
START Flight #4 RF08 - 2005-12-14
START Flt #4 2005-12-14
START Flight #1 2005-12-01 (502RF01)
QuickTime™ and aTIFF (LZW) decompressor
are needed to see this picture.
START Flight #1 2005-12-01 (502RF01)
QuickTime™ and aTIFF (LZW) decompressor
are needed to see this picture.
QuickTime™ and aAnimation decompressor
are needed to see this picture.
Stratospheric Intrusion and the Separation Stratospheric Intrusion and the Separation of the Thermal and Dynamical Tropopauseof the Thermal and Dynamical Tropopause
O3 (z) O3 (RALT)
H2O (z) H2O (RALT)
Summary
Results from the START experiment
• Demonstrated the capability of HIAPER in UTLS studies
• Initial data provided good validation for the satellite retrievals
• Sampled multiple cases of stratospheric intrusions. Characterization of the air mass in the region of intrusion using tracer-tracer correlation and trajectory model is in progress
Thank You !
Shadows of Monument Valley - Flight 051209