Status of the Geostationary Spectrograph (GeoSpec) for Earth and Atmospheric Science Applications

Details Status of the Geostationary Spectrograph (GeoSpec) for Earth and Atmospheric Science Applications Status of the Geostationary Spectrograph (GeoSpec) for Earth and Atmospheric Science Applications

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsf43a0772j&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #SF43A-0772

Physics

Optics

6919 Electro-Optics, 6924 Interferometry, 6969 Remote Sensing, 6982 Tomography And Imaging, 6994 Instruments And Techniques

Scientific paper

GeoSpec will support future satellite mission concepts in the Atmospheric Sciences and in Land and Ocean Sciences by providing time-resolved measurements of both chemically linked atmospheric trace gas concentrations of important molecules such as O3, NO2, CH2O and SO2 and at the same time coastal and ocean pollution events, tidal effects, and the origin and evolution of aerosol plumes. The instrument design concept in development is a dual spectrograph covering the UV/VIS wavelength region of 310-500 nm and the VIS/NIR wavelength region of 480-940 nm coupled to all reflective telescope and high sensitivity PIN/CMOS area detectors. The goal of the project is to demonstrate a system capable of making moderate spatial resolution (1 km at nadir) hyperspectral measurements (1.0 to 1.5 nm resolution) from a geostationary orbit. This will enable studies of time-varying pollution and coastal change processes with a temporal resolution of 15 minutes on a regional scale to 1 hour on a continental scale. Other spatial and temporal resolutions can be supported by varying the focal length of the input telescope and scanning strategies. Scientific rationale and instrument design and status will be presented.

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