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ScholarsArchive at Oregon State University
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The variability of sea level and surface geostrophic currents in the Southern Ocean is investigated from the first 26 months of unclassified Geosat altimeter data (November 1986 to December 1988). Because of problems unique to Geosat, it has been...
1990-10-15 (iso8601)
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The scheduled February 1985 launch of a radar altimeter aboard the U.S. Navy satellite Geosat has
motivated an in-depth investigation of wind speed retrieval from satellite altimeters. The accuracy of sea
surface wind speed estimated by the Seasat...
1985-05-20 (iso8601)
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Mars Pathfinder successfully landed at Ares Vallis on July 4, 1997, deployed and navigated
a small rover about l00 m clockwise around the lander, and collected data from three science
instruments and ten technology experiments. The mission...
1999-04-25 (iso8601)
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The Phoenix mission, launched on 4 August 2007, landed in the far northern
plains of Mars on 25 May 2008. In order to prepare for the landing events and the
90-sol mission, a significant amount of work has gone into characterizing the atmospheric...
2008 (iso8601)
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A fluorescent dye tracer was injected into the
pycnocline on the Oregon shelf at a depth of 9–10 m. It
spread rapidly cross-shelf as two distinct layers, one above
the other in the water column, split by interleaving dye-free
water. The vertical...
2006 (iso8601)
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During the upwelling season in central California, northwesterly winds along the
coast produce a strong upwelling jet that originates at Point Año Nuevo and flows
southward across the mouth of Monterey Bay. A convergent front with a mean...
2009 (iso8601)
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The dynamics of the coastal transition zone off Northern California during late May and early June 1987 art
examined through assimilation modeling studies. A regional baroclinic quasi-geostrophic model is driven by the
data through initial and...
1991-08-15 (iso8601)
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The response of alongshore currents V over the continental shelf and of coastal sea level ζ along the
Pacific coast of North America to atmospheric forcing on large alongshore scales (100-2000 km) during
May-July 1981 (Coastal Ocean Dynamics...
1987-02-15 (iso8601)
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We study the statistical properties of the coastal wind field along the west coast of North America for
two summers. 1981 and 1982 Coastal Ocean Dynamics Experiments 1 and 2, respectively), and the
Intervening winter using measured winds and...
1987-02-15 (iso8601)
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The finite amplitude nonlinear behavior of the coastal transition zone (CTZ) jet, assumed to be governed by quasi-geostrophic dynamics, is studied utilizing numerical experiments in an idealized geometry. Finite difference solutions to initial...
1991-08-15 (iso8601)
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A data assimilation system (DAS) of the wind-driven, mesoscale shelf circulation off
the Oregon coast is developed. The DAS assimilates low-pass filtered surface velocity
measurements, obtained from land-based high-frequency coastal radar arrays,...
2002-09-10 (iso8601)
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We conduct modeling studies of the coastal circulation off northern California in the vicinity of the Eel River (40.6 degreesN, the site of the 1995-2000 Strata Formation on Margins (STRATAFORM) marine geology observational program) using a series...
2001-11-15 (iso8601)
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This is the second part of a modeling study of wind-forced flow on the continental shelf off northern California in the region (37°-40°N) of the Coastal Ocean Dynamics Experiment (CODE). Gan and Allen [2002] analyzed the shelf flow response to...
2002 (iso8601)
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What is the uncertainty of climate-carbon cycle projections in response to anthropogenic greenhouse gas emissions and how can we reduce this uncertainty? We address this question by quantifying the ability of available ocean tracer observations to...
2009-10-20 (iso8601)
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A series of satellite sea surface temperature (SST) intercomparison workshops were conducted under NASA sponsorship at the Jet Propulsion Laboratory. Three different satellite data sets were compared with each other, with routinely collected ship...
1985-11-20 (iso8601)
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A new method is developed for studying large-scale temporal variability of ocean currents from
satellite altimetric sea level measurements at intersections (crossovers) of ascending and descending orbit
ground tracks. Using this method, sea level...
1985-05-20 (iso8601)
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Sea surface temperature (SST) is measured from space by advanced very high resolution radiometer (AVHRR), scanning multichannel microwave radiometer (SMMR), high resolution infrared sounder (HIRS) and VISSR atmospheric sounder (VAS). Typical...
1985-11-20 (iso8601)
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In a recent paper, Sandwell and Agreen [1984; hereafter SA]
presented figures of global seasonal wind speed and sea state
as measured by the GEOS 3 satellite altimeter. Since that
time, Chelton and McCabe [1985; hereafter CM] have found
that...
1985-05-20 (iso8601)
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A previous altimeter wind speed retrieval algorithm was developed on the basis of wind speeds in the the limited range from about 4 to 14 ms¯¹. In this paper, we use a new approach which gives a wind speed model function applicable over the range...
1986-12-15 (iso8601)
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A Geosat altimeter wind speed algorithm is derived by cross-calibrating Geosat and Seasat
altimeter estimates of the normalized radar cross section σ₀ and modifying an existing Seasat
altimeter wind speed model function to obtain a model function...
1991-05-15 (iso8601)
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The sea-state bias in Geosat altimeter range measurements expressed as a percentage of significant
wave height (SWH) is examined as a function of SWH. The bias is shown to be approximately
a fixed -3.5% of SWH for SWH smaller than about 4 m. For...
1991-05-15 (iso8601)
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A mean reference surface and time-dependent orbit errors are estimated simultaneously for
each exact-repeat ground track from the first two years of Geosat sea level estimates based on
the Goddard Earth model (GEM)-T2 orbits. Motivated by orbit...
1993-07-15 (iso8601)
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Tide gauges are designed to measure changes in water level relative to land. However, vertical motions of the earth's crust manifest themselves as apparent water level changes in tide gauge records. These crustally induced changes are often small...
1986-08-10 (iso8601)
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A two-part modeling study of the wind-forced flow on the continental shelf off
northern California in the region (37°–40°N) of the Coastal Ocean Dynamics Experiment
(CODE) is pursued. This paper involves a process-oriented study with idealized...
2002-09-17 (iso8601)
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The Gulf of Aqaba, northern Red Sea, is an ideal natural laboratory for studying the
impact of atmospheric dry deposition of iron to the ocean surface. We have measured
atmospheric iron deposition weekly for 18 months, and dissolved and total...
2006-09-01 (iso8601)
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