February 28, 2007
GCRIO Program Overview
Our extensive collection of documents.
Archives of the
Global Climate Change Digest
A Guide to Information on Greenhouse Gases and Ozone Depletion
Published July 1988 through June 1999
FROM VOLUME 2, NUMBER 7, JULY 1989
"Altitude Distribution of Stratospheric NO3. 1. Observations of NO3
and Related Species," J.-P. Naudet (Lab. Phys. Chim. de l'Environ., CNRS,
45071, Orléans, Cedex 2, France), P. Rigaud, M. Pirre, J. Geophys.
Res., 94(D5), 6374-6382, May 20, 1989.
Five balloon-borne observations of the vertical profile of stratospheric NO3
and ozone were performed between 1981 and 1985 by using the star and planet
occultation technique at 662 nm. The latest available laboratory determination
at this absorption cross section gives NO3 concentrations that are about a
factor of two lower than those previously reported. Ozone and NO2 results are
"Altitude Distribution of Stratospheric NO3. 2. Comparison of
Observations with Model," M. Pirre (address immed. above), R. Ramaroson et
al., ibid., 6383-6388.
Theoretical calculations of the altitude distribution of NO3, made with a
time-dependent zero-dimensional model taking into account the accepted
photochemistry of the stratosphere, are compared with the measurements presented
in the above paper. The concentration of NO3 is shown to be strongly dependent
on the ozone concentration and temperature. These parameters were measured and
used as fixed data in the model. Results show consistency between theory and
"The Mean Ozone Profile and Its Temperature Sensitivity in the Upper
Stratosphere and Lower Mesosphere: An Analysis of LIMS Observations," L.
Froidevaux (Jet Propulsion Lab., Calif. Inst. Technol., Pasadena CA 91109), M.
Allen et al., ibid., 6389-6417.
Presents a detailed analysis of one week of data from the Nimbus 7 Limb
Infrared Monitor of the Stratosphere (LIMS), with emphasis on the ozone
abundance and its temperature sensitivity between 0.1 and 6 mbar, covering the
upper stratosphere and lower mesosphere. The zonally averaged ozone profile (30° -35° N
latitude) is compared with results from a simplified photochemical model that
assumes ozone to be in photochemical steady state. The model ozone profile is
systematically lower than the observed profile, which is in good agreement with
the observations of other experiments below about 0.2 mbar. Also shows that the
ozone-temperature sensitivity coefficient, Q, is affected by zonal and vertical
advection terms as well as by the photochemical coupling between O3 and T.
"Comparisons of Satellite Ozone Data in the Lower Stratosphere for
1978/1979," E.E. Remsberg (Atmos. Sci. Div., MS 401B, NASA Langley Res.
Ctr., Hampton VA 23665), C.-Y. Wu, ibid., 6419-6434.
Compares monthly satellite ozone for the middle to lower stratosphere from
late 1978 to mid-1979, when SBUV results are believed to be most reliable.
Results from the Nimbus 7 Limb Infrared Monitor of the Stratosphere (LIMS)
experiment are compared with those from SBUV because the sampling and precision
of both are similar. Results from the Stratospheric and Aerosol Gas Experiment
are included for spring 1979. Differences between the three satellite data sets
are evaluated with the aid of electrochemical concentration cell sonde and
Matsonde measurements and Dobson data at selected stations.
"Stratospheric Nitric Acid Vapour Measurements in the Cold Arctic
Vortex: Implications for Nitric Acid Condensation," F. Arnold
(Max-Planck-Inst. für Kernphysik, POB 103980, D-6900 Heidelberg, FRG), G.
Knop, Nature, 338(6218), 746-749, Apr. 27, 1989.
Reports in situ measurements of the detailed height distribution of
gaseous nitric acid, using a balloon-borne technique, which offers a much better
altitude resolution (30m) than previous satellite measurements. This data set
shows an upper limit to Tc(NAT), the condensation temperature of nitric acid
trihydrate, of 195 K at 23 km, and is consistent with model predictions based on
the present gaseous nitric acid data. However, the upper limit to Tc(NAT) is
markedly lower than some of the early model estimates.
"Atmospheric Concentrations and Distributions of CF2Cl2, CFCl3 and
N2O over Japan between 1979 and 1986," M. Hirota (Aerological Observatory,
1-2, Nagamine, Tsukuba, Ibaraki 305, Japan), H. Muramatsu et al., J. Meteor.
Soc. Japan, Ser. 2, 66(5), 703-708, Oct. 1988.
Tropospheric and stratospheric air samples were collected and analyzed for
CF2Cl2, CFCl3 and N2O by a GC-ECD method. Mean volume mixing ratios in the
troposphere of CF2Cl2 and CFCL3 were increasing at almost constant rates: 13.5
ppt/year and 9.5 ppt/year, respectively, over the study period. Those of N2O
appear to be increasing at a rate of 2.0 ppb/year between December 1982 and
November 1986. Volume mixing ratios of CF2Cl2, CFCl3 and N2O in the lower
stratosphere (15-28 km) decreased with increasing altitude in agreement with the
vertical profiles calculated from a one-dimensional photochemical-diffusive
Guide to Publishers
Index of Abbreviations