NASA GODDARD HOMEPAGE FOR TROPOSPHERIC
OZONE
NASA Goddard Space Flight Center
Code 613.3, Chemistry and Dynamics Branch
Investigators:
* * * Please Read NASA website Privacy
Statement * * *
TROPOSPHERIC OZONE DATA AND IMAGES FROM AURA OMI/MLS
As members of the Aura Ozone Monitoring Instrument (OMI) science
team we are developing several tropospheric ozone data products from
OMI in combination with Aura Microwave Limb Sounder (MLS). One of
these involves OMI measurements alone to derive tropospheric and
stratospheric ozone. By combining OMI total column ozone measurements
with MLS stratospheric column ozone measurements, we are producing
global maps of OMI/MLS tropospheric ozone. Aura MLS stratospheric
ozone data were provided in collaboration with the Aura MLS team at
Jet Propulsion Laboratory, Pasadena, CA.
NOTES:
(1) The tropospheric ozone on this webpage from combined Aura OMI and
MLS is an experimental science research data product and is not a
standard data product. All tropospheric ozone data and images
involving OMI/MLS residual measurements are considered preliminary,
and development of these data products is ongoing work. Please
revisit this website periodically for updates to images and data.
(2) All OMI data and images from this webpage used older version
8 "collection 2" processing and not the newer version 8.5 "collection
3". An exception is the new preliminary global maps of tropospheric
ozone for October 2004 - July 2008 (see below).
(3) This is the journal reference for the OMI/MLS tropospheric
ozone data:
Ziemke, J. R., S. Chandra, B. N. Duncan, L. Froidevaux, P. K. Bhartia,
P. F. Levelt, and J. W. Waters,
"Tropospheric ozone determined from Aura OMI and MLS: Evaluation
of measurements and comparison with the Global Modeling Initiative's
Chemical Transport Model", J. Geophys. Res., 111, D19303,
doi:10.1029/2006JD007089, 2006.
MAPS OF MONTHLY-MEAN TROPOSPHERIC
COLUMN OZONE FROM OMI/MLS RESIDUAL
MEASUREMENTS (OCT04 - JUL08):
PSEUDO CLIMATOLOGY OF ABOVE
TROPOSPHERIC COLUMN OZONE:
[return-to-top]
OTHER PUBLIC DOMAIN DATA AND IMAGES, ETC. :
Monthly-mean maps (GIF images) of tropical tropospheric column
ozone (in Dobson Units) derived from the Convective Cloud Differential
(CCD) method [Ziemke et al., 1998]:
GRIDDED TROPICAL DATA:
Data for the above tropospheric column ozone images can be obtained
at this website. The data (see DATA DOCUMENTATION
) represent monthly-means with a resolution of 5 degrees latitude
by 5 degrees longitude and are printed in ASCII format for both TROPOSPHERIC and
STRATOSPHERIC column measurements.
Stratospheric column ozone to within a few Dobson Units in the
tropics is zonally homogeneous. For this reason the stratospheric
column ozone data file gives only one value for each latitude.
There is also an IDL
PROCEDURE provided to read these data tables. At current time
these CCD data files are developed from Nimbus 7 TOMS and Earth Probe
TOMS version 8 measurements. In the future, the new Aura OMI CCD data
will be appended to continue this long time-record data set.
PACIFIC AVERAGED DATA FOR 50S TO 60N:
Pacific averaged (120W-120E) monthly mean stratospheric and
tropospheric column ozone from TOMS measurements covering the
latitudeS 50S to 60N (5 degree latitude bands) can be obtained here.
The tabulated data were obtain using the CCD method. Measurements for
latitudes south of 50S and north of 60N are not included in the tables
because there are not enough suitable clouds for using the CCD method.
As with the above data tables, TOMS version 8 level-2 footprint
measurements were used to construct the data. There are two ASCII
tables, one for STRATOSPHERIC
column ozone and one for TROPOSPHERIC
column ozone. Time coverage extends from January 1979 through
December 2005. Two-sigma uncertainties in these monthly measurements
of both stratospheric and tropospheric column ozone are 5 DU. There
is an IDL PROCEDURE
provided to read these data tables. Note that in the tables the two
left-most numbers designate latitude ranges (maximum and minimum) for
the measurements. It is noted that the stratospheric column ozone
measurements outside the tropics from Earth Probe TOMS began having
problems in mid-2001. Stratospheric ozone began showing an erroneous
downward trend and a signature of a solar zenith angle dependent
calibration drift. Stratospheric data for years 2001-2005 are lower
than they should be, so that the variabilities in the measurements
should be evaluated with caution. Tropospheric ozone is not affected
directly by calibration drift (it's a differencing method) and
maintains reasonable numbers through year 2005.
SPECIAL NOTES:
All of the above data tables were determined from Nimbus 7 TOMS
(Jan79-Apr93) and Earth Probe TOMS (Aug96-Dec05) satellite
measurements. Following December 2005, Earth Probe TOMS no
longer provides data. In the future, the new Aura OMI ozone
measurements will be used to continue adding to these long time
records of stratospheric and tropospheric column ozone.
Below is the primary journal reference for the CCD data and methodology:
Ziemke, J. R., S. Chandra, and P. K. Bhartia,
"Two new methods for deriving tropospheric column ozone from TOMS
measurements: The assimilated UARS MLS/HALOE and convective-cloud
differential techniques",
J. Geophys. Res., 103, 22,115-22,127, 1998.
[return-to-top]
REFEREED CO-AUTHOR PUBLICATIONS ON TROPOSPHERIC
OZONE FROM MEMBERS OF OUR RESEARCH GROUP
(NOTE:
IF YOU WISH TO HAVE A COPY OF ONE OF THESE PAPERS
PLEASE SEND THE CONTACT PERSON (SEE BELOW) AN
EMAIL MESSAGE STATING THIS REQUEST:
Chandra, S., J. R. Ziemke, B. N. Duncan, T. L. Diehl, and TBD,
"Effects of the 2006 El Niņo on tropospheric ozone and carbon
monoxide: Implications for dynamics and biomass burning",
Atmos. Chem. Phys. Dis., in review, 2009.
Ziemke, J. R., J. Joiner, S. Chandra, P. K. Bhartia, A. Vasilkov, et al.,
Ozone mixing ratios inside tropical deep convective clouds from
OMI satellite measurements", Atmos. Chem. Phys., in press, 2009.
Duncan, B. N., J. J. West, Y. Yoshida, A. M. Fiore, and J. R. Ziemke,
"The influence of European pollution on ozone in the Near East
and northern Africa", Atmos. Chem. Phys., 8, 2267-2283, 2008.
Fishman, J., K. W. Bowman, J. P. Burrows, et al.,
"Remote sensing of chemically reactive tropospheric trace gases
from space", Bull. Amer. Meteorol. Soc., 805-821, June 2008.
Schoeberl, M. R., J. R. Ziemke, B. Bojkov, N. Livesey, B. N. Duncan, et al.,
"A trajectory-based estimate of the tropospheric ozone column using
the residual method", J. Geophys. Res., 112, D24S49,
doi:10.1029/2007JD008773, 2007.
Martin, R. V., B. Sauvage, I. Folkins, C. E. Sioris, C. Boone,
P. Bernath, and J. R. Ziemke
"Space-based constraints on the production of nitric oxide by
lightning", J. Geophys. Res., 112 (D9), D09309, 2007.
Sauvage, B., R. V. Martin, A. van Donkelaar, and J. R. Ziemke,
"Quantification of the factors controlling tropical tropospheric
ozone and the South Atlantic maximum", J. Geophys. Res.,
112 (D11) D11309, 2007.
Ziemke, J. R., S, Chandra, S., M. R. Schoeberl, L. Froidevaux,
W. G. Read, P. F. Levelt, and P. K. Bhartia,
"Intra-seasonal variability in tropospheric ozone and water vapor in
the tropics", Geophys. Res. Lett., 34, L17804,
doi:10.1029/2007GL030965, 2007.
Chandra, S., J. R. Ziemke, M. R. Schoeberl, L. Froidevaux, W. G. Read,
P. F. Levelt, and P. K. Bhartia,
"Effects of the 2004 El Nino on tropospheric ozone and water vapor",
Geophys. Res. Lett., 34, L06802, doi:10.1029/2006GL028779, 2007.
Ziemke, J. R., S. Chandra, B. N. Duncan, L. Froidevaux, P. K. Bhartia,
P. F. Levelt, and J. W. Waters,
"Tropospheric ozone determined from Aura OMI and MLS: Evaluation
of measurements and comparison with the Global Modeling Initiative's
Chemical Transport Model", J. Geophys. Res., 111, D19303,
doi:10.1029/2006JD007089, 2006.
Tie, X., S. Chandra, J. R. Ziemke, C. Granier, and G. P. Brasseur,
"Satellite measurements of tropospheric column O3 and NO2 in eastern
and southeastern Asia: Comparison with a global model (MOZART-2)",
J. Atmos. Chem.", doi:10.1007/s10874-006-9045-7, 2006.
Ziemke, J. R., S. Chandra, and P. K. Bhartia,
"A 25-year data record of atmospheric ozone in the Pacific from TOMS
Cloud Slicing: Implications for ozone trends in the stratosphere and
troposphere", J. Geophys. Res., 110, D15105, doi:10.1029/2004JD005687,
2005.
Chandra, S., J. R. Ziemke, X. Tie, and G. Brasseur,
"Elevated ozone in the troposphere over the Atlantic and Pacific Oceans
in the northern hemisphere", Geophys. Res. Lett., 31, L23102,
doi:10.1029/2004GL020821, 2004.
Ziemke, J. R., and S. Chandra,
"A Madden-Julian Oscillation in tropospheric ozone", Geophys. Res.
Lett., 30(23), 2182, doi:10.1029/2003GL018523, 2003.
Ahn, C., J. R. Ziemke, S. Chandra, and P. K. Bhartia,
"Derivation of tropospheric column ozone from EPTOMS/GOES co-located
data sets using the Cloud Slicing technique", J. Atmos. Solar Terr.
Phys., 65(10), 1127-1137, 2003.
Ziemke J. R., S. Chandra, and P. K. Bhartia,
"Upper tropospheric ozone derived from the Cloud Slicing technique:
Implications for large-scale convection",
J. Geophys. Res., 108(D13),
4390, doi:10.1029/2002JD002919, 2003.
Chandra, S., J. R. Ziemke, and R. V. Martin,
"Tropospheric ozone at tropical and middle latitudes derived from
TOMS/MLS residual: Comparison with a global model",
J. Geophys. Res.,
108(D9), 4291, doi:10.1029/2002JD002912, 2003.
Ziemke, J. R., and S. Chandra,
"La Nina and El Nino induced variabilities of ozone in the tropical
lower atmosphere during 1970-2001",
Geophys. Res. Lett., 30(3), 1142,
doi:10.1029/2002GL016387, 2003.
Chandra, S., J. R. Ziemke, P. K. Bhartia, and R. V. Martin,
"Tropical tropospheric ozone: Implications for dynamics and biomass
burning", J. Geophys. Res., 107(D14),
doi:10.1029/2001JD00044, 2002.
Ziemke, J. R., S. Chandra, and P. K. Bhartia,
"Cloud slicing: A new technique to derive upper tropospheric ozone
from satellite measurements",
J. Geophys. Res., 106, 9853-9867, 2001.
Martin, R. V., D. J. Jacob, J. A. Logan, J. R. Ziemke, and R. Washington,
"Detection of lightning influence on tropical tropospheric ozone using
empirical orthogonal functions",
Geophys. Res. Lett., 27, 1639-1642, 2000.
Ziemke, J. R., S. Chandra, and P. K. Bhartia,
"A new NASA data product: Tropospheric and stratospheric column ozone
in the tropics derived from TOMS measurements",
Bull. Amer. Meteorol.
Soc., 81, 580-583, 2000.
Ziemke, J. R., and S. Chandra,
"Seasonal and interannual variabilities in tropical tropospheric ozone"
,
J. Geophys. Res., 104, 21,425-21,442, 1999.
Chandra S., J. R. Ziemke, and R. W. Stewart,
"An 11-year solar-cycle in tropospheric ozone from TOMS measurements"
,
Geophys. Res. Lett., 26, 185-188, 1999.
Ziemke, J. R., S. Chandra, and P. K. Bhartia,
"Two new methods for deriving tropospheric column ozone from TOMS
measurements: The assimilated UARS MLS/HALOE and convective-cloud
differential techniques",
J. Geophys. Res., 103, 22,115-22,127, 1998.
Ziemke, J. R., and S. Chandra,
"On tropospheric ozone and the tropical wave 1 in total ozone",
in Atmospheric
ozone, Vol. 1, edited by R. D. Bojkov and
G. Visconti, pp. 447-450, 1998.
Chandra, S., J. R. Ziemke, W. Min, and W. G. Read,
"Effects of 1997-1998 El Nino on tropospheric ozone and water vapor"
,
Geophys. Res. Lett., 25, 3867-3870, 1998.
Ziemke, J. R., and S. Chandra,
"Comment on 'Tropospheric ozone derived from TOMS/SBUV measurements
during TRACE A' by J. Fishman et al.", J. Geophys. Res., 103,
13,903-13,906, 1998.
Ziemke, J. R., S. Chandra, A. M. Thompson, and D. P. McNamara,
"Zonal asymmetries in southern hemisphere column ozone: Implications of
biomass burning", J. Geophys. Res., 101, 14,421-14,427, 1996.
[return-to-top]
TREND ANALYSIS SOFTWARE, ETC.:
MULTIPLE LINEAR REGRESSION SOURCE CODES FOR
TREND ANALYSIS AND GENERAL SCIENCE APPLICATIONS (both Fortran and IDL
software - includes example programs). The trend analysis codes
originate from Ziemke et al. [1997]:
Ziemke, J. R., S. Chandra, R. D. McPeters, and P. Newman,
Dynamical proxies of column ozone with applications to global
trend models, J. Geophys. Res., 102, 6117-6129, 1997.
(If you use the regression trend routine(s) for published work, you
may if you want list this paper as the reference to these trend
programs.) Ziemke et al. [1997] used a Monte Carlo statistical
approach. The multi-variate statistics built into the trend code can
be turned off and replaced by a Monte Carlo method by adding random
noise to the independent proxies.
FORTRAN CODE for solving general N X N linear
system problems (i.e.,solves AX=B using Gauss-Jordan method).
FORTRAN CODE for numerically solving ordinary
differential equations (coupled Runge-Kutta method). This program
shows one example of a 3rd-order ODE and prints the results to an
ASCII table which can be plotted using an IDL
PLOTTING PROGRAM. The IDL program generates a postscript IMAGE.
FORTRAN CODE for Empirical Orthogonal
Function (EOF) analysis of data.
FORTRAN CODE for Fast Fourier
Transform analysis of data. The first step of Fourier analysis is to
determine prime number factorization of the time series length (Here
is a FORTRAN CODE for providing prime
number factorization). Here is also a FORTRAN CODE
for listing prime numbers.
Short glossary of commonly-used terms in Atmospheric Science
(all pages are GIF IMAGES): PAGE1,
PAGE2, PAGE3,
PAGE4, PAGE5,
PAGE6.
SHORT GLOSSARY (text file) of
commonly-used terms in Atmospheric Science from the University
of Illinois at Urbana-Champaign.
FIGURE (GIF IMAGE): What is a Dobson
Unit (DU)?
FIGURE (GIF IMAGE): How is Column
Ozone Computed?
SPACE TIME HARMONIC DECOMPOSITION (GIF
IMAGE) for data with one temporal and one spatial (longitude)
variable.
[return-to-top]
CONTACT PERSON:
Dr. Jerry R. Ziemke
NASA Goddard
Space Flight Center
Code 613.3, Chemistry and
Dynamics Branch
Greenbelt, Maryland, 20771
Office phone: 301-614-6034
Office Fax: 301-614-5903
Email: ziemke@jwocky.gsfc.nasa.gov
Affiliation:
UMBC GEST (non-NASA website), Baltimore,
Maryland
[return-to-top]
 |
 |
Web Curator: Dr. Jerry R. Ziemke (UMBC GEST, and NASA GSFC
Code 613.3)
Responsible NASA official: Dr. P. K. Bhartia, Atmospheric
Chemistry and Dynamics Branch, NASA GSFC Code 613.3
|
