The Orbiting Carbon Observatory (OCO) and the Greenhouse Gases Observing Satellite (GOSAT) are the first two satellites designed to make global measurements of atmospheric carbon dioxide (CO2) with...
The NASA Orbiting Carbon Observatory (OCO) mission : objectives, approach, and status (2009)
Livermore, Thomas R., Crisp, David
The Orbiting Carbon Observatory (OCO) is a NASA Earth System Science Pathfinder (ESSP) mission that is currently under development at the Jet Propulsion Laboratory (JPL). OCO will make global,...
Deep atmosphere composition from near infrared observations of the Venus night side. (2009)
NASA/JPL
Zhiming Kuang, Jack Margolis, Geoffrey Toon, David Crisp, Yuk Yung
[1] We introduce a strategy for measuring the column-averaged CO2 dry air volume mixing ratio XCO2 from space. It employs high resolution spectra of reflected sunlight taken simultaneously in...
Intercomparison of shortwave radiative transfer codes and (2008)
Rangasayi N. Halthore, David Crisp, Stephen E. Schwartz, G. P. Anderson, A. Berk
measurements
The Orbiting Carbon Observatory (OCO) Mission (2007)
Goddard Space Flight Center, NASA/JPL
Kiang, Nancy Y., Segura, Antigona, Tinetti, Giovanna, Blankenship, Robert E., Cohen, Martin, ...
As photosynthesis on Earth produces the primary signatures of life that can be detected astronomically at the global scale, a strong focus of the search for extrasolar life will be photosynthesis,...
Baines, Kevin H., Atreya, Sushi, Carlson, Robert W., Chutjian, Ara, Crisp, David, Hall, Jeffrey L., ...
Drifting in the strong winds of Venus under benign Earth-like temperature and pressure conditions, an instrumented balloon-borne science station presents a viable means to explore, in-situ, the...
The Orbiting Carbon Observatory mission (2006)
Crisp, David, Johnson, Christyl
The Orbiting Carbon Observatory (OCO) mission was selected by NASA’s Office of Earth Science as the fifth mission in its Earth System Science Pathfinder (ESSP) Program. OCO will make the first...
Haring, Robert, Sutin, Brian, Crisp, David, Pollock, Randy, Sundstrand, Hamilton
The status of the OCO instrument optical design is presented in this paper. The optical bench assembly comprises three cooled grating spectrometers coupled to an all-reflective telescope/relay...
Monitoring CO2 sources and sinks from space : the Orbiting Carbon Observatory (OCO) Mission (2006)
NASA’s Orbiting Carbon Observatory (OCO) will make the first space-based measurements of atmospheric carbon dioxide (CO2) with the precision, resolution, and coverage needed to characterize the...
Mapping martian atmospheric pressure with ground-based near infrared spectroscopy (2006)
Chamberlain, Sarah A, Bailey, Jeremy A, Crisp, David
We present images of Mars obtained in the 2.0 µm CO₂ band with the United Kingdom Infrared Telescope (UKIRT). The images reveal topographic features of the Martian surface that are usually...
Mapping martian atmospheric pressure with ground-based near infrared spectroscopy (2006)
Chamberlain, Sarah A, Bailey, Jeremy A, Crisp, David
We present images of Mars obtained in the 2.0 µm CO₂ band with the United Kingdom Infrared Telescope (UKIRT). The images reveal topographic features of the Martian surface that are usually...
Chamberlain, Sarah, Bailey, Jeremy, Walter, Malcolm, Simpson, Andrew, Crisp, David
Early ground-based observations recorded the visible Martian albedo, displaying variations due to surface composition and texture. However, the topography of Mars, including large-scale features such...
Biosignatures from Earth-Like Planets Around M Dwarfs (2005)
Segura, Antigona, Kasting, James F., Meadows, Victoria, Cohen, Martin, Scalo, John, Crisp, David, ...
Coupled one-dimensional photochemical-climate calculations have been performed for hypothetical Earth-like planets around M dwarfs. Visible, near-infrared and thermal-infrared synthetic spectra of...
Micro-Sensors for in-situ Meteorological Measurements (2004)
Crisp, David, Kaiser, William J., Vanzandt, Thomas R.
Improved in-situ meteorological measurements are needed for monitoring the weather and climate of the terrestrial and martian atmospheres. We have initiated a program to assess the feasibility and...
The Infrared Spectrum of H2S from 1 to 5 µm (2004)
Brown, Linda R., Crisp, Joy, Crisp, David, Bykov, Alexander D., Naumenko, Olga V., Smirnov, Maxim A., ...
The absorption spectra of H2S from 2000 to 11 147 cm-1 have been obtained with spectral resolutions of 0.006, 0.012, and 0.021 cm-1 and optical paths of 1.5 m to 433 m using the Fourier transform...
Eluszkiewicz, Janusz, Crisp, David, Zurek, Richard, Elson, Lee, Fishbein, Evan, Froidevaux, Lucien, ...
Results for the residual circulation in the stratosphere and lower mesosphere between September, 1991, and February, 1994, are presented.
Spatially resolved NIR images and spectra of Venus obtained in 1983 revealed high-contrast emission features on the night side of the planet at wavelengths near 1.74 and 2.3 µm. Subsequent...
Comparisons between solar flux measurements and predictions obtained from theoretical radiative transfer models indicate that most of these models underestimate the globally averaged solar energy...
Detection of the Tip of Red Giant Branc in NGC 5128 (2004)
Soria, Roberto, Mould, Jeremy R., Watson, Alan M., Gallagher, John S. III, Ballester, Gilda E., Burrows, Christopher J., ...
We present a color-magnitude diagram of more than 10,000 stars in the halo of galaxy NGC 5128 (Centaurus A), based on WFPC2 images through the V and I filters. The position of the red-giant branch...
Disk-averaged synthetic spectra of Mars (2004)
Tinetti, Giovanna, Meadows, Victoria S., Crisp, David, Fong, William, Velusamy, Thangasamy, Snively, Heather
The principal goal of the NASA Terrestrial Planet Finder (TPF) and ESA Darwin mission concepts is to directly detect and characterize extrasolar terrestrial (Earth-sized) planets. This first...
The State and Future of Mars Polar Science and Exploration (2000)
Clifford, Stephen M., Crisp, David, Fisher, David A., Herkenhoff, Ken E., Smrekar, Suzanne E., Thomas, Peter C., ...
As the planet's principal cold traps, the martian polar regions have accumulated extensive mantles of ice and dust that cover individual areas of ~106 km2 and total as much as 3-4 km thick. From the...
Stellar Populations at the Center of IC 1613 (1999)
Cole, Andrew A., Tolstoy, Eline, Gallagher, John S., Hoessel, John G., Mould, Jeremy R., Holtzman, Jon A., ...
We have observed the center of the Local Group dwarf irregular galaxy IC 1613 with WFPC2 aboard the Hubble Space Telescope in the F439W, F555W, and F814W filters. We find a dominant old stellar...
WFPC2 Observations of Compact Star Cluster Nuclei in Low Luminosity Spiral Galaxies (1999)
Matthews, Lynn D., Gallagher, John S., Krist, John E., Watson, Alan M., Burrows, Christopher J., ...
We have used the Wide Field Planetary Camera 2 aboard the Hubble Space Telescope to image the compact star cluster nuclei of the nearby, late-type, low-luminosity spiral galaxies NGC 4395, NGC 4242,...
Closed curves and geodesics with two self-intersections on the Punctured torus (1998)
Schmidt, Thomas A., Wiles, Peter, Insel, Thomas, Dziadosz, Susan, Garity, Dennis J., Crisp, David
We classify the free homotopy classes of closed curves with minimal self intersection number two on a once punctured torus, T , up to homeomorphism. Of these, there are six primitive classes and two...
HST Far-Ultraviolet Imaging of Jupiter During the Impacts of Comet Shoemaker-Levy 9 (1995)
Clarke, John T, Prange, Renee, Ballester, Gilda E, Trauger, John, Evans, Robin, Rego, Daniel, ...
Hubble Space Telescope far-ultraviolet images of Jupiter during the Shoemaker-Levy 9 impacts show the impact regions darkening over the 2 to 3 hours after the impact, becoming darker and more...