ATMOS on the International Space
Proposed Deployment of the Atmospheric
Trace Molecule Spectroscopy Experiment on the International Space Station
- ATMOS on ISS 11/20/95 - Executive Summary
The ATMOS Fourier Transform Spectrometer is an extant instrument which acquires
high-resolution, broadband solar occultation spectra from space. ATMOS uses
infrared transmission to profile over 30 atmospheric constituents including
O3, N2O, CH4, H2O, the entire NOy family, and much of the chlorine and fluorine
families, including HCl, HF, and ClONO2. ATMOS has operated successfully in
four Space Shuttle missions and in an extensive series of ground-based measurements.
Deployment on the International Space Station (ISS) will increase by orders
of magnitude the number of observation opportunities, providing greater latitudinal,
seasonal, and temporal coverage than achieved previously, and will extend the
ATMOS database from 1985 into the next two decades.
Key science objectives of an ATMOS deployment on ISS are:
- Transport studies; capitalizing on the ability to make highly precise
measurements of key tracers of atmospheric transport through different seasons
and over several years.
- Stratospheric chemistry; providing measurements of gases important for
the photochemical regulation of O3 over a wide range of conditions, taking
full advantage of co-located measurements of aerosols by SAGE III.
- Tropospheric chemistry; using high quality tropospheric spectra to measure
concentrations of H2O, O3, CO, HNO3, and other species important for regulating
- Polar processes; providing observations of ozone, nitrogen oxides, water,
inorganic chlorine, and long-lived gases during periods of vortex breakup.
- Radiation and climate; recording changes in solar infrared transmission,
as a result of changes in aerosols and tropospheric water vapor, which directly
- Long-term monitoring; building on the ATMOS data record to measure growth
rates of greenhouse gases and precursors of O3 depleting catalysts.
- New species detection; fingerprinting the state of the atmosphere with
high quality infrared spectra to preserve a record of gases which are growing
- Correlative measurements; providing a reference standard for comparison
with the suite of measurements from EOS Chem-1, bridging the gap between
UARS and EOS.
ATMOS's previous accomplishments demonstrate these science objectives are realistic.
A deployment on International Space Station will contribute much to the goals
of the Mission to Planet Earth Program.
This white paper is available for downloading
in PDF form.
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