Physics
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufm.a23a0928m&link_type=abstract
American Geophysical Union, Fall Meeting 2005, abstract #A23A-0928
Physics
0345 Pollution: Urban And Regional (0305, 0478, 4251), 0360 Radiation: Transmission And Scattering, 1616 Climate Variability (1635, 3305, 3309, 4215, 4513), 1620 Climate Dynamics (0429, 3309), 7537 Solar And Stellar Variability (1650)
Scientific paper
The Daedalus Mission concept is being developed to exploit the unique vista of the Sun-Earth Lagrange point L1 for simultaneous observations of key solar emission/space weather parameters and spectrally resolved radiances over the entire illuminated Earth. The goal is to provide a direct measure of the influence of solar variability on the Earth System with high spatial resolution (5-25 km) and hemispheric spatial coverage on synoptic timescales (< 1 hour). Daedalus data will track climate change by monitoring the flow of energy through the Earth System, detailing its non-linear dynamical responses to solar forcing and how these responses propagate as manifested by spatiotemporal changes of global circulation modes (QBO, Annular Modes, ENSO, etc.), albedo, and large-scale biosphere structures. The Earth Science payload will consist of a series of spectrometers with spectral resolving powers R = λ/Δλ = 1000 at wavelengths from the ultraviolet through the far infrared (300 nm to 100 μm). The solar physics payload will be compatible with those of current and planned follow-on L1 platforms, contributing to critical space weather strategic goals. Daedalus L1 observations are envisioned as the capstone to an Earth Observing System of Systems, providing a global context to observations made over more limited spatial and/or temporal extents from low (LEO), middle (MEO) and geostationary (GEO) Earth orbits. The Daedalus mission is planned for a launch readiness date in the 2014 time frame to maximize overlap with the NPOESS platforms; its 5-year on-station lifetime will provide data over half of the solar cycle. Additionally, Daedalus spatially and spectrally resolved observations of the illuminated Earth disk will provide a rigorous test of the Terrestrial Planet Finder (TPF-I and TPF-C) retrieval algorithms and their ability to detect biosignatures in the presence of varying cloud, aerosol and landmass fractions.
Feynman Joan
Hurst Kenneth J.
Miller Charles E.
Murphy Neil
Ruzmaiken A. A.
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