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NASA Goddard Code 614 Tropospheric Studies - AERONET Support |
Trajectory Images provided on this website are in support of the
AERONET (AErosol RObotic NETwork) program
and the BAMGOMAS
(Back trajectories, AERONET, MODIS, GOCART, MPLNET Aerosol Synergism) project.
The trajectories are based on a kinematic
trajectory analysis using NASA GMAO (Global Modeling Assimilation Office)
assimulated gridded analysis data (for Jan. 1, 2000-August 30, 2007) and from
NCEP (National Centers for Environmental Prediction) analyses (Aug. 31, 2007-> ).
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The Trajectory Analysis runs are based on the trajectory code
developed at NASA/Goddard Code 614 - The Atmospheric Chemistry and Dynamics
Branch. This website and analyses are being generated and supplied
by T. Kucsera
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Note that not all dates within this period may be available.
Currently 7-back trajectory analyses are generated twice a day (00Z and 12Z)
and two sets of images are generated:
The first set has trajectory analyses starting at four pressures levels (950 hPa, 850 hPa, 700 hPa and
500 hPa) at each of the AERONET sites - these levels correspond to altitudes of appoximately
.5, 1.5, 3, and 5 kilometers, respectively.
In addition, the second set of images (see links labeled "All_Levels") contains the above 4 levels
as well as 4 higher levels (400, 300, 250, and 200 hPa) - corresponding to approx. altitudes of
7, 9, 10, and 12 kilometers.
Kelowna Site Special Note: In early analyses products - The Kelowna site was incorrectly
situated in China - This site is actually located in Canada.
ANALYSES AVAILABILITY INFORMATION
Analyses are Available For the following Dates -
7-day Analyses starting from 2000-Jan-1 --> up to about 23 days back from today's current date.
These analyses are continually being generated on a daily basis.
ACKNOWLEDGEMENT INFO:
"Thanks to Tom L. Kucsera (GESTAR/USRA) at NASA/Goddard for
back-trajectories available at the aeronet.gsfc.nasa.gov website"
Or consider listing as co-authors on extensively used projects and papers.
References:
Schoeberl, M. R., and P. A. Newman, A multiple-level trajectory analysis
of vortex filaments, J. Geophys. Res., 100, 25,801-25,816, 1995.
Pickering, K. E., A. M. Thompson, H. Kim, A. J. DeCaria, L. Pfister, T. L.
Kucsera, J. C. Witte, M. A. Avery, D. R. Blake, J. H. Crawford, B. G.
Heikes, G. W. Sachse, S. T. Sandholm, R. W. Talbot, Trace gas transport and
scavenging in PEM-Tropics B South Pacific Convergence Zone convection, J.
Geophys. Res., 106, 32,591-32,602, 2001.
CONTACT INFO:
Tom Kucsera
USRA - GESTAR Goddard Earth Science Technology & Research Center (GESTAR)
Code 614
NASA Goddard Space Flight Center
Greenbelt, MD 20771
e-mail: Tom.L.Kucsera@nasa.gov