Atmospheric CO(2) monitoring from space.

A spectroscopic method of monitoring the atmospheric CO(2) mixing ratio vertical profile from space is described. An experimental design is presented for a solar occultation mode with the O(2)A band in the visible region to retrieve pressure and temperature profiles first, and then several CO(2) bands in the infrared region at 4.3, 2.7, and 2.0 mum to obtain CO(2) mixing ratio profiles. Instrument techniques considered are low resolution Fourier transform spectrometry and radiometry of various bandwidths. Simulations indicate that the precision of the pressure, temperature, and CO(2) mixing ratio measurements for an altitude region 30-10 km are less than 1%, 1 K, and 1%, respectively, for the case of the Fourier transform spectrometer and approximately 1%, 1 K, and 2% for the case of the radiometer. With careful experimental design, measurements can be made with better precision and also can extend below 10 km. This inferred precision of CO(2) may be considered to be good enough for investigating atmospheric dynamics when CO(2) is used as a tracer and also for measuring spatial and temporal variations of CO(2) mixing ratios in the range of 0.5-6.5% of 350 parts per million by volume in the troposphere and the lower stratosphere.

[1]  James M. Russell,et al.  Aerosol effects and corrections in the Halogen Occultation Experiment , 1995 .

[2]  S. R. Drayson,et al.  Pressure sensing of the atmosphere by solar occultation using broadband CO(2) absorption. , 1979, Applied optics.

[3]  U. Schmidt,et al.  In situ measurements of carbon dioxide in the winter Arctic vortex and at midlatitudes: An indicator of the ‘age’ of stratopheric air , 1991 .

[4]  J. H. Park,et al.  Analysis method for Fourier transform spectroscopy. , 1983, Applied optics.

[5]  J. H. Park,et al.  Analysis of far-infrared emission Fourier transform spectra. , 1986, Applied optics.

[6]  P. Tans,et al.  Latitudinal distribution of the sources and sinks of atmospheric carbon dioxide derived from surface observations and an atmospheric transport model , 1989 .

[7]  Takakiyo Nakazawa,et al.  Temporal and spatial variations of upper tropospheric and lower stratospheric carbon dioxide , 1991 .

[8]  V. M. Devi,et al.  THE HITRAN MOLECULAR DATABASE: EDITIONS OF 1991 AND 1992 , 1992 .

[9]  J. Levine.  Global biomass burning - Atmospheric, climatic, and biospheric implications , 1990 .

[10]  S. Wofsy,et al.  Tracer‐tracer relationships and lower stratospheric dynamics: CO2 and N2O correlations during SPADE , 1994 .

[11]  J. Randerson,et al.  Terrestrial ecosystem production: A process model based on global satellite and surface data , 1993 .

[12]  Makoto Suzuki,et al.  Conceptual design study of ILAS-II onboard ADEOS-II , 1995, Optics & Photonics.

[13]  J. Russell,et al.  Satellite confirmation of the dominance of chlorofluorocarbons in the global stratospheric chlorine budget , 1996, Nature.

[14]  J. H. Park,et al.  Analysis and application of Fourier transform spectroscopy in atmospheric remote sensing. , 1984, Applied optics.

[15]  C. B. Farmer,et al.  High resolution infrared spectroscopy from space: A preliminary report on the results of the Atmospheric Trace Molecule Spectroscopy (ATMOS) experiment on Spacelab 3 , 1987 .

[16]  James M. Russell,et al.  The Halogen Occultation Experiment , 1993 .

[17]  J. Russell,et al.  Evolution of Southern Hemisphere spring air masses observed by HALOE , 1994 .

[18]  M. Prather,et al.  Simulations of the trend and annual cycle in stratospheric CO2 , 1993 .

[19]  David G. Murcray,et al.  Validation of hydrogen fluoride measurements made by the Halogen Occultation Experiment from the UARS platform , 1996 .

[20]  Christopher R. Webster,et al.  Validation of Halogen Occultation Experiment CH4 measurements from the UARS , 1996 .

[21]  Joe W. Waters,et al.  The Upper Atmosphere Research Satellite (UARS) , 1997 .

[22]  R. Toth.  Temperature sounding from the absorption spectrum of CO(2) at 4.3 microm. , 1977, Applied optics.

[23]  Guy Guelachvili,et al.  Chapter 1 – Distortions in Fourier Spectra and Diagnosis , 1981 .

[24]  P. Fabian,et al.  Increased concentration and vertical distribution of carbon dioxide in the stratosphere , 1985, Nature.

[25]  D. Randall,et al.  Latitudinal gradient of atmospheric CO2 due to seasonal exchange with land biota , 1995, Nature.

[26]  A. Matsuzaki,et al.  Rocket observation of the rotational profile of the A-band absorption spectrum of atmospheric oxygen molecule , 1984 .

[27]  W. G. Melbourne,et al.  Initial Results of Radio Occultation Observations of Earth's Atmosphere Using the Global Positioning System , 1996, Science.

[28]  S. Wofsy,et al.  Measurements of stratospheric carbon dioxide and water vapor at northern midlatitudes: Implications for troposphere‐to‐stratosphere transport , 1995 .

[29]  Pieter P. Tans,et al.  Evidence for interannual variability of the carbon cycle from the National Oceanic and Atmospheric Administration/Climate Monitoring and Diagnostics Laboratory Global Air Sampling Network , 1994 .

[30]  J. H. Park,et al.  Solar occultation sounding of pressure and temperature using narrowband radiometers. , 1980, Applied optics.

[31]  S. R. Drayson,et al.  HALOE Antarctic observations in the Spring of 1991 , 1993 .