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Observations of Stratocumulus Clouds and Their Effect on the Eastern Pacific Surface Heat Budget along 20 degrees S

Creator:: de Szoeke, Simon P., Yuter, Sandra, Mechem, David, Fairall, Chris W., Burleyson, Casey D., and Zuidema, Paquita
Abstract:: Widespread stratocumulus clouds were observed on nine transects from seven research cruises to the southeastern tropical Pacific Ocean along 20°S, 75°–85°W in October–November of 2001–08. The nine transects sample a unique combination of synoptic and interannual variability affecting the clouds; their ensemble diagnoses longitude–vertical sections of the atmosphere, diurnal cycles...
Resource Type:: Article
Full Text:: Their Effect on the Eastern Pacific Surface Heat Budget along 208S SIMON P. DE SZOEKE,* SANDRA YUTER,1

Impacts of aerosol particles on the microphysical and radiative properties of stratocumulus clouds over the southeast Pacific Ocean

Creator:: Twohy, C. H., Anderson, J. R., Toohey, D. W., Andrejczuk, M., Adams, A., Lytle, M., George, R. C., Wood, R., Saide, P., Spak, S., Zuidema, P., and Leon, D.
Abstract:: The southeast Pacific Ocean is covered by the world's largest stratocumulus cloud layer, which has a strong impact on ocean temperatures and climate in the region. The effect of anthropogenic sources of aerosol particles on the stratocumulus deck was investigated during the VOCALS field experiment. Aerosol measurements below and above...
Resource Type:: Article
Full Text:: - shore along the 20◦ S latitude line were used to examine gra- dients of cloud microphysical and aerosol

Ship-Based Observations of the Diurnal Cycle of Southeast Pacific Marine Stratocumulus Clouds and Precipitation

Creator:: Burleyson, Casey D., de Szoeke, Simon P., Yuter, Sandra E., Wilbanks, Matt, and Brewer, W. Alan
Abstract:: The diurnal cycle of marine stratocumulus in cloud-topped boundary layers is examined using ship-based meteorological data obtained during the 2008 Variability of American Monsoon Systems (VAMOS) Ocean–Cloud–Atmosphere–Land Study Regional Experiment (VOCALS-REx). The high temporal and spatial continuity of the ship data, as well as the 31-day sample size, allows the...
Resource Type:: Article
Full Text:: Pacific Marine Stratocumulus Clouds and Precipitation Ship-Based Observations of the Diurnal Cycle of

Biases in droplet radii and optical depths of marine stratocumulus retrieved from MODIS imagery

Creator:: Boeke, Robyn C.
Abstract:: The 2007 Intergovernmental Panel on Climate Change assessment established that the effect of clouds on climate contributes the largest uncertainty in predicting the future climate. Satellite observations provide an opportunity for learning about the behavior of clouds. This thesis seeks to assess the accuracy of cloud properties retrieved from multispectral...
Resource Type:: Masters Thesis
Full Text:: . While the net effect of clouds on climate is cooling, high clouds, such as cirrus, and low clouds

Stratocumulus Cloud-Top Height Estimates and Their Climatic Implications

Creator:: Zuidema, Paquita, Painemal, David, de Szoeke, Simon P., and Fairall, Chris
Abstract:: A depth-dependent boundary layer lapse rate was empirically deduced from 156 radiosondes released during six month-long research cruises to the southeast Pacific sampling a variety of stratocumulus conditions. The lapse-rate dependence on boundary layer height is weak, decreasing from a best fit of 7.6 to 7.2 K km⁻¹ as the...
Resource Type:: Article
Full Text:: southeast Pacific sampling a variety of stratocumulus conditions. The lapse-rate dependence on boundary

Air–Sea Heat Exchange along the Northern Sea Surface Temperature Front in the Eastern Tropical Pacific

Creator:: Thum, Nicolai, Esbensen, Steven K., Chelton, Dudley B., and McPhaden, Michael J.
Abstract:: The atmospheric response to the oceanic forcing in the eastern Pacific along the northern equatorial sea surface temperature (SST) front is investigated in terms of sensible and latent heat flux during the 6-month period from 28 July 1999 to 27 January 2000 and the 7-month period from 28 June 2000...
Resource Type:: Article
Full Text:: the Eastern Tropical Pacific NICOLAI THUM, STEVEN K. ESBENSEN, AND DUDLEY B. CHELTON College of

Air-sea heat exchange along the northern sea surface temperature front in the eastern tropical Pacific

Creator:: Thum, Nicolai
Abstract:: The atmospheric response to the oceanic forcing in the eastern Pacific along the northern equatorial sea surface temperature (SST) front is investigated in terms of sensible and latent heat flux during the 6-month period 28 July 1999 through 27 January 2000. Of particular interest is the atmospheric boundary layer (ABL)...
Resource Type:: Masters Thesis
Full Text:: Heat Exchange Along the Northern Sea Surface Temperature Front in the Eastern Tropical Pacific by

Near-Surface Density Currents Observed in the Southeast Pacific Stratocumulus-Topped Marine Boundary Layer

Creator:: Wilbanks, Matt C., Yuter, Sandra E., de Szoeke, Simon P., Brewer, W. Alan, Miller, Matthew A., Hall, Andrew M., and Burleyson, Casey D.
Abstract:: Density currents (i.e., cold pools or outflows) beneath marine stratocumulus clouds are characterized using 30 days of ship-based observations obtained during the 2008 Variability of American Monsoon Systems (VAMOS) Ocean–Cloud–Atmosphere–Land Study Regional Experiment (VOCALS-REx) in the southeast Pacific. An air density increase criterion applied to the Improved Meteorological (IMET) sensor...
Resource Type:: Article
Full Text:: along the axis of themean wind. Prefrontal cloud-base heights are on average 1190m, and wind speeds in

Properties of low-level marine clouds as deduced from advanced very high resolution radiometer satellite observations

Creator:: Chang, Fu-Lung
Abstract:: A radiation model was developed for retrieving cloud visible optical depth, droplet effective radius, and cloud top emission temperature using AVHRR satellite observations at 0.63, 3.7, and 11 μm. The model was used to determine the sensitivity of the retrieved properties to various approximations often employed in such retrievals. Droplet...
Resource Type:: Dissertation
Full Text:: their effect on the earth's radiation budget. Their effect on the shortwave radiation leads to cooling

Observations of Coupling between Surface Wind Stress and Sea Surface Temperature in the Eastern Tropical Pacific

Creator:: Chelton, Dudley B., Esbensen, Steven K., Schlax, Michael G., Thum, Nicolai, Freilich, Michael H., Wentz, Frank J., Gentemann, Chelle L., McPhaden, Michael J., and Schopf, Paul S.
Abstract:: Satellite measurements of surface wind stress from the QuikSCAT scatterometer and sea surface temperature (SST) from the Tropical Rainfall Measuring Mission Microwave Imager are analyzed for the three-month period 21 July–20 October 1999 to investigate ocean–atmosphere coupling in the eastern tropical Pacific. Oceanic tropical instability waves (TIWs) with periods of...
Resource Type:: Article
Full Text:: surface wind field and SST in the eastern tropical Pacific is investigated from the first three months of

ScholarsArchive@OSU

Observations of Stratocumulus Clouds and Their Effect on the Eastern Pacific Surface Heat Budget along 20 degrees S

Impacts of aerosol particles on the microphysical and radiative properties of stratocumulus clouds over the southeast Pacific Ocean

Ship-Based Observations of the Diurnal Cycle of Southeast Pacific Marine Stratocumulus Clouds and Precipitation

Biases in droplet radii and optical depths of marine stratocumulus retrieved from MODIS imagery

Stratocumulus Cloud-Top Height Estimates and Their Climatic Implications

Air–Sea Heat Exchange along the Northern Sea Surface Temperature Front in the Eastern Tropical Pacific

Air-sea heat exchange along the northern sea surface temperature front in the eastern tropical Pacific

Near-Surface Density Currents Observed in the Southeast Pacific Stratocumulus-Topped Marine Boundary Layer

Properties of low-level marine clouds as deduced from advanced very high resolution radiometer satellite observations

Observations of Coupling between Surface Wind Stress and Sea Surface Temperature in the Eastern Tropical Pacific

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