A Study of Sources in the Human Brain Associated with Stereopsis, (9999)
Weinberg, H., Brickett, P., Robertson, A., Crisp, D., Cheyne, D.
Stereopsis, is an important and interesting subject of study for many reasons. Clearly, the brain codes, and stores, complex information about the relative positions of objects in space; how this is...
Bosch, H., Toon, G. C., Sen, B., Washenfelder, R. A., Wennberg, P. O., Buchwitz, M., ...
Space-based measurements of reflected sunlight in the near-infrared (NIR) region promise to yield accurate and precise observations of the global distribution of atmospheric CO2. The Orbiting Carbon...
Abiotic formation of O2 and O3 in high-CO2 terrestrial atmospheres (2007)
Segura, A., Meadows, V. S., Kasting, J. F., Crisp, D., Cohen, M.
Previous research has indicated that high amounts of ozone (O3) and oxygen (O2) may be produced abiotically in atmospheres with high concentrations of CO2. The abiotic production of these two gases,...
Russo, Pedro, Titov, Dima, Markiewicz, Wojtek, Moissl, Richard, Roatsch, Thomas, Belyaev, D., ...
Venus is completely enshrouded by clouds that have complex layered structure. The cloud top can be defined as the level where the optical depth reaches unity. However the aerosol haze extends to much...
Venus monitoring camera for Venus express (2007)
Markiewicz, W.J., Titiov, D.V., Ignatiev, N., Keller, H.U., Crisp, D., Limaye, S.S., ...
The Venus Express mission will focus on a global investigation of the Venus atmosphere and plasma environment, while additionally measuring some surface properties from orbit. The instruments PFS and...
Venus monitoring camera for Venus express (2007)
Markiewicz, W. J., Titov, D. V., Ignatiev, N., Keller, H. U., Crisp, D., Limaye, S. S., ...
Radiation in the atmosphere of Venus (2007)
Titov, D., Bullock, M., Crisp, D., Renno, N., Taylor, F. W., Zasova, L. V.
Tinetti, G., Meadows, V.S., Crisp, D., Kiang, N.Y., Kahn, B.H., Bosc, E., ...
Spatially and spectrally resolved models were used to explore the observational sensitivity to changes in atmospheric and surface properties and the detectability of surface biosignatures in the...
Boesch, Hartmut, Toon, G., Sen, B, Li, Q. B., Salawitch, R., Miller, C., ...
NASA/JPL
Boesch, Hartmut, Toon, G., Sen, B, Li, Q.B., Salawitch, R., Miller, C., ...
NASA/JPL
The planetary fourier spectrometer (PFS) onboard the European Venus Express mission (2006)
Formisano, V., Angrilli, F., Arnold, G., Atreya, S., Baines, K.H., Bellucci, G., ...
The planetary fourier spectrometer (PFS) for the Venus Express mission is an infrared spectrometer optimized for atmospheric studies. This instrument has a short wavelength (SW) channel that covers...
Deuterated methane and ethane in the atmosphere of Jupiter (2005)
Parkinson, C. D., Lee, A. Y.-T., Yung, Y. L., Crisp, D.
AGU San Francisco, California, USA
Disk-averaged Spectra & light-curves of Earth (2005)
Tinetti, G., Meadows, V. S., Crisp, D., Fong, W., Kiang, N., Fishbein, E., ...
We are using computer models to explore the observational sensitivity to changes in atmospheric and surface properties, and the detectability of biosignatures, in the globally averaged spectra and...
Polarimetric analysis of fine resolution X-band SAR sea clutter data (2005)
Stacy, N.J., Crisp, D., Goh, A., Badger, D., Preiss, M.
Abstract—The DSTO Ingara multi-mode X-Band radar collected fine resolution fully polarimetric sea clutter data over a wide variety of sea states, incidence and azimuth angles. Analysis includes...
Freedman, W.L., Madore, B.F., Stetson, P.B., Hughes, S.M.G., Holtzman, J.A., Mould, J.R., ...
As part of both the Early Release Observations fromthe Hubble Space Telescope and the Key PRoject on the Extragalctic Distance Scale, we have obtained multi-wavelength BVR WFPC2 images for the...
Microinstruments for a Low Power, Low Mass Weather Station (2004)
Hoenk, M.E., Zandt, T.R. Van, Kaiser, W.J., Crisp, D., Tillman, J.
Advances in electronics and instrument technology over the past thirty years have enabled a new concept for NASA missions, an evolution from large Voyager-class spacecraft to smaller, less costly...
AAT Observations of Shoemaker Levy-9 Collisions with Jupiter (2004)
Meadows, V., Crisp, D., Orton, G., Brooke, T., Spencer, J.
We will use the Infrared Imaging Spectrometer (IRIS) on the 3.9m Anglo-Australian Telescope (AAT)to observe the collisions of the fragmented comet Shoemaker Levy-9 (SL9) with Jupiter on July 16-22.
Hubble Space Telescope Wide Field Planetary Camera Observations of Neptune (2004)
Crisp, D., Trauger, J., Stapelfeldt, K., Brooke, T., Clarke, J., Ballester, G., ...
The Hubble Space Telescope Wide Field Planetary Camera 2 was used to observe Neptune on 28-29 June 1994.
VESAT: The Venus Environmental Satellite Discovery Mission (2004)
Baines, K., Carlson, R., Crisp, D., Schofield, J., Bezard, B., Bergh, C. De, ...
The Venus Environmental Satellite (VESAT) is being developed by JPL, Ball Aerospace, the University of Wisconsin, and Oxford University as an inexpensive but effective means of assessing numerous and...
Gerstell, M., Crisp, J., Crisp, D.
The 1982 eruptions of El Chichon Volcano injected large quantities of sulfur dioxide gas and silicate ash into the stratosphere. Several studies have shown that the long-lived sulfuric acid aerosols...
The On-Orbit Performance of WFPC2 (2004)
Trauger, J., Ballester, G., Burrows, C., Casertano, S., Clarke, J., Crisp, D., ...
This paper provides an overview of the characteristics of the second Wide Field and Planetary Camera and some authors' perspectives of its first six months of operation on orbit.
Micro Weather Stations for Mars (2004)
Crisp, D., Kaiser, W., Vanzandt, T., Hoenk, M., Tillman, J.
A global network of weather stations will be needed to characterize the near-surface environment on Mars.
The Infrared Spectrum of H2S from 1 to 5 Mm (2004)
Bykov, A. D., Naumenko, O. V., Smirnov, M. A., Sinitsa, L. N., Brown, L. R., Crisp, J., ...
The absorption spectra of H***S from 2000 to 11,147 cm*** have been obtained with spectral resolutions of 0.006, 0.012 and 0.021 cm*** using the Fourier transform spectrometer at Kitt Peak National...
The Thermal Balance of the Venus Atmosphere (2004)
Observations of the Venus thermal structure colledted during the first three decades of the space age reveal high surface temperatures, near-adiabatic vertical temperature gradients throughout the...
Spectroscopic Parameters of H2S Polyads Between 3400 and 8000 cm x 10 to -1 exponent (2004)
Bykov, A.D., Naumenko, O.V., Smirnov, M.A., Sinitsa, L.N., Perrin, A., Crisp, J., ...
The absorption spectra of hydrogen sulfide from 0.8 to 5 micro- meters were recorded with three spectral resolutions using the Fourier transform spectrometer at Kitt Peak National Observatory. Twenty...
WFPC2 Imaging of the Circumstellar Nebulosity of HL Tauri (2004)
Stapelfeldt, K.R., Burrows, C.J., Krist, J.E., Trauger, J.T., Hester, J.J., Holtzman, J.A., ...
HL Tauri is considered a prototype solar-mass T Tauri star. Planetary camera images of HL Tauri have been obtained through V, R, and I band filters using the Wide Field Planetary Camera 2 aboard the...
The atmospheric radiative transfer algorithms used in most global general circulation models underestimate the globally-averaged solar energy absorbed by cloudy atmospheres by up to 25 Wm-2...Here, a...
Eluszkiewicz, J., Crisp, D., Granger, R. G., Lambert, A., Roche, A. E., Kumer, J. B., ...
The simultaneous measurements of temperature, aerosol extinction, and of the radiatively active gases by several instruments onboard the Upper Atmosphere Research Satellite permits and assessment of...
Analysis of the First and Second Triads of H2S from 2200 to 4100 cm-1 (2004)
Brown, L. R., Crisp, J. A., Crisp, D., Perrin, A., Bykov, A. D., Naumenko, O. V., ...
Vertical Structure of Neptune's Atmosphere (2004)
Crisp, D., Trauger, J., Stapelfeldt, K., Evans, R., Ballester, G., Clarke, J.
Reliable descriptions of the optical properties of clouds and aerosols are essential for studies of radiative transfer in the terrestrial atmosphere...Here we explore the utility of two approaches...
The Absorption Spectrum of H2S Between 2150 and 4260 cm-1 (2004)
Brown, L. R., Crisp, J. A., Crisp, D., Perrin, A., Naumenko, O. V., Smirnov, M. A., ...
Detailed knowledge of hydrogen Sulfide absorption spectra is important for terrestrial remote sensing applications and investigations of atmospheric chemistry in Venus and other planets.
The Mars Pathfinder Atmospheric Structure Investigation/Meteorology (ASI/MET) experiment (2004)
Schofield, J. T., Crisp, D., Barnesw, J. R., Haberle, R. M., Magalhaes, J. A., Murphy, J. R., ...
The Mars Pathfinder ASI/MET experiment measured the vertical density, pressure and temperature structure of the Martian atmosphere from the surface to 160 km, and monitored surface meteorology and...
To identify the origin of this mission absorption, a spectrum-resolving (line-by-line) multiple scattering model was used to derive solar radiances, fluxes, and heating rates for realistic clear and...
A broad range of advanced spacecraft and measurement technologies are needed to support NASA's ambitious plans for space and Earth science observations during the first decade of the 21st century.
HST Imaging of the Circumstellar Nebulosity of T Tauri (2004)
Stapelfeldt, K. R., Burrows, C. J., Krist, J. E., Watson, A. M., Ballester, G. E., Clarke, J. T., ...
Short exposure Planetary Camera images of T Tauri have been obtained using broadband filters spanning the wavelength range 0.55-0.80 mu. The optically visible star lies very close to an arc of...
Anderson, R. C., Barnes, J. R., Bell, J. F. III, Bridges, N. T., Britt, D. T., Brucker, J., ...
Mars pathfinder successfully landed at Ares Vallis on July 4, 1997 and returned 2.3 Gbits of information during 3 months of surface operations of a lander, rover, three science instruments,...
Saturn's Hydrogen Aurora, WFPC2 Imaging from the Hubble Space Telescope (2004)
Trauger, J. T., Clarke, J. T., Ballester, G. E., Evans, R. W., Burrows, C. J., Crisp, D., ...
WFPC2/HST images of Saturn's far-ultraviolet aurora reveal emissions confined to a narrow band of latitudes near Saturn's north and south poles. The aurorae are most prominent in the morning sector...
Near-Infrared Sounding of the Lower Atmosphere of Venus (2004)
Taylor, F., Crisp, D., Bezard, B.
The recent discovery of near-infrared (near-IR) emission from the nightside of Venus provides a powerful new technique for studying its lower atmosphere and surface.
The MVACS Tunable Diode Laser Spectrometers (2004)
May, R., Forouhar, S., Crisp, D., Woodward, W., Paige, D., Pathare, A., ...
Two independent tunable diode laser spectrometers are resident aboard the Mars Polar Lander as part of the Mars Volatile and Climate Surveyor payload.
Asteroid Trails in Hubble Space Telescope WFPC2 Images: First Results (2004)
Evans, R., Stapelfeldt, K., Peters, D., Trauger, J., Padgett, D., Ballester, G., ...
Careful examination of 28,460 selected Wide Field and Planetary Camera 2 (WFPC2) long exposures from 1994, 1995 and early 1996 has revealed trails of 96 distinct moving objects.
Hagan, D., Crisp, D., Blavier, J. F., Di Girolamo, L., Ackerman, T.
Using a helium plus reversible fluid balloon system as the observing platform, multiple profiles of shortwave irradiance between 4 and 10 km were recently obtained over the Los Angeles basin.
The Cloudsat Profiling A-Band Spectrometer/Imager, PABSI (2004)
Crisp, D., Duval, V., Mouroulis, P., Pollock, R., Vane, D., Stephens, G.
The Cloudsat Profiling 02 A-Band Spectrometer/Imager (PABSI) (2004)
Crisp, D., Duval, V., Mouroulis, P., Pollock, R., Vane, D., Stephens, G.
Venus Stratospheric Sounder: First In Situ Measurements In Upper Cloud Region (2004)
Kerzhanovich, V., Crisp, D., Preston, R., Esposito, L., Ingersoll, A., Young, R., ...
Many major questions about the Venus stratosphere are still unanswered.
Venus Stratospheric Sounder: First in Situ Measurements in Upper Cloud Region (2004)
Kerzhanovich, V., Crisp, D., Preston, R., Esposito, L., Ingersoll, A., Young, R., ...
In spite of intensive ground-based and space observations, many major questions about the Venus stratosphere are still unanswered.
Meadows, V., Crisp, D., Barnes, J., Orton, G., Brooke, T., Spencer, J.
We used the InfraRed Imaging Spectrometer (IRIS) on the Anglo-Australian Telescope to monitor the impacts of Comet Shoemaker-Levy 9 with Jupiter.
In-Situ Environmental Measurements Needed for Future Mars Mission (2004)
Crisp, D., Wilson, G., Murphy, J., Banfield, D., Barnes, J., Farrell, W., ...
This paper briefly describes the processes used to select and validate their associated technologies. Future New Millennium Program flight opportunities are also discussed.
A Variable Asymmetry in the Circumstellar Disk of HH 30***sup1*** (2004)
Stapelfeldt, K., Watson, A., Krist, J., Burrows, C., Crisp, D., Ballester, G., ...
We report Hubble Space Telescope observations of variability within the reflection nebulosity of HH 30, a compact bipolar nebula which is a nearly edge-on accretion disk system.
The Etched Hourglass Nebula MyCn18: I. Hubble Space Telescope (2004)
Sahai, R., Dayal, A., Watson, A., Trauger, J., Stepelfeldt, K., Burrows, C., ...
The night side of Venus (2004)
Venus has been scrutinized for 35 years by ground based telescopes and an armada of spacecraft, but it took just eight minutes of exposure for the high-resolution spectra to yield an important...
Crisp, D., Chao, Y., Lemmerman, L., Torres, E., Paules, G.
Advances in our understanding and ability to predict changes in our environment will require more comprehensive and coordinated measurements, data delivery systems, and modeling tools.
Here, we propose a Venus exploration program designed to explain the origin and divergent evolution of the interiors, surfaces, and atmospheres of the terrestrial planets in our solar system, and...