Index Catalog // ScholarsArchive@OSU

Ocean–Cloud–Atmosphere–Land Interactions in the Southeastern Pacific: The VOCALS Program

Creator:: Mechoso, C. R., Wood, R., Weller, R., Bretherton, C. S., Clarke, A. D., Coe, H., Fairall, C., Farrar, J. T., Feingold, G., Garreaud, R., Grados, C., McWilliams, J., de Szoeke, Simon P., Yuter, S. E., and Zuidema, P.
Abstract:: The present paper describes the Variability of the American Monsoon Systems (VAMOS) Ocean–Cloud–Atmosphere–Land Study (VOCALS), an international research program focused on the improved understanding and modeling of the southeastern Pacific (SEP) climate system on diurnal to interannual time scales. In the framework of the SEP climate, VOCALS has two fundamental...
Resource Type:: Article
Full Text:: Pacific: The VOCALS Program Mechoso, C. R., Wood, R., Weller, R., Bretherton, C. S., Clarke, A. D., Coe

The VAMOS Ocean-Cloud-Atmosphere-Land Study Regional Experiment (VOCALS-REx): goals, platforms, and field operations

Creator:: Wood, R., Mechoso, C. R., Bretherton, C. S., Weller, R. A., Huebert, B., Straneo, F., Albrecht, B. A., Coe, H., Allen, G., Vaughan, G., Daum, P., Fairall, C., Chand, D., Klenner, L. Gallardo, Garreaud, R., Grados, C., Covert, D. S., Bates, T. S., Krejci, R., Russell, L. M., de Szoeke, Simon P., Brewer, A., Yuter, S. E., Springston, S. R., Chaigneau, A., Toniazzo, T., Minnis, P., Palikonda, R., Abel, S. J., Brown, W. O. J., Williams, S., Fochesatto, J., Brioude, J., and Bower, K. N.
Abstract:: The VAMOS Ocean-Cloud-Atmosphere-Land Study Regional Experiment (VOCALS-REx) was an international field program designed to make observations of poorly understood but critical components of the coupled climate system of the southeast Pacific. This region is characterized by strong coastal upwelling, the coolest SSTs in the tropical belt, and is home to...
Resource Type:: Article
Full Text:: evaporation (Colbo and Weller, 2007; deSzoeke et al., 2010). This surface forcing was applied to a relatively

A comparison of ship and satellite measurements of cloud properties with global climate model simulations in the southeast Pacific stratus deck

Creator:: Brunke, M. A., de Szoeke, Simon P., Zuidema, P., and Zeng, X.
Abstract:: Here, liquid water path (LWP), cloud fraction, cloud top height, and cloud base height retrieved by a suite of A-train satellite instruments (the CPR aboard CloudSat, CALIOP aboard CALIPSO, and MODIS aboard Aqua) are compared to ship observations from research cruises made in 2001 and 2003–2007 into the stratus/stratocumulus deck...
Resource Type:: Article
Full Text:: , T., Fairall, C., Yuter, S. E., Weller, R. A., Baumgardner, D., Comstock, K., Wood, R., and Raga, G

A Motion-Stabilized W-Band Radar for Shipboard Observations of Marine Boundary-Layer Clouds

Creator:: Moran, Ken, Pezoa, Sergio, Fairall, Chris, Williams, Chris, Ayers, Tom, Brewer, Alan, de Szoeke, Simon P., and Ghate, Virendra
Abstract:: Cloud radars at X, Ka and W-bands have been used in the past for ocean studies of clouds, but the lack of suitable stabilization has limited their usefulness in obtaining accurate measurements of the velocity structure of cloud particles and the heights of cloud features. A 94 GHz (W-band) radar...
Resource Type:: Article
Full Text:: 10.1007/s10546-011-9674-5 ARTICLE A Motion-Stabilized W-Band Radar for Shipboard Observations of Marine

A regional real-time forecast of marine boundary layers during VOCALS-REx

Creator:: Wang, S., O'Neill, L. W., Jiang, Q., de Szoeke, Simon P., Hong, X., Jin, H., Thompson, W. T., and Zheng, X.
Abstract:: This paper presents an evaluation and validation of the Naval Research Laboratory's COAMPS® real-time forecasts during the VOCALS-REx over the area off the west coast of Chile/Peru in the Southeast Pacific during October and November 2008. The analyses focus on the marine boundary layer (MBL) structure. These forecasts are compared...
Resource Type:: Article
Full Text:: . Atmospheric Chemistry and Physics A regional real-time forecast of marine boundary layers during VOCALS-REx

Atmospheric sulfur cycling in the southeastern Pacific – longitudinal distribution, vertical profile, and diel variability observed during VOCALS-REx

Creator:: Yang, M., Huebert, B. J., Blomquist, B. W., Howell, S. G., Shank, L. M., McNaughton, C. S., Clarke, A. D., Hawkins, L. N., Russell, L. M., Covert, D. S., Coffman, D. J., Bates, T. S., Quinn, P. K., Zagorac, N., Bandy, A. R., de Szoeke, Simon P., Zuidema, P. D., Tucker, S. C., Brewer, W. A., Benedict, K. B., and Collett, J. L.
Abstract:: Dimethylsulfide (DMS) emitted from the ocean is a biogenic precursor gas for sulfur dioxide (SO₂) and non-sea-salt sulfate aerosols (SO₄²⁻). During the VAMOS-Ocean-Cloud-Atmosphere-Land Study Regional Experiment (VOCALS-REx) in 2008, multiple instrumented platforms were deployed in the Southeastern Pacific (SEP) off the coast of Chile and Peru to study the linkage...
Resource Type:: Article
Full Text:: . Blomquist1, S. G. Howell1, L. M. Shank1, C. S. McNaughton1, A. D. Clarke1, L. N. Hawkins2, L. M. Russell2, D

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:: . P., Brewer, W. A., Miller, M. A., Hall, A. M., & Burleyson, C. D. (2015). Near-surface density

Evaluating WRF-Chem aerosol indirect effects in Southeast Pacific marine stratocumulus during VOCALS-REx

Creator:: Saide, P. E., Spak, S. N., Carmichael, G. R., Mena-Carrasco, M. A., Yang, Q., Howell, S., Leon, D. C., Snider, J. R., Bandy, A. R., Collett, J. L., Benedict, K. B., de Szoeke, Simon P., Hawkins, L. N., Allen, G., Crawford, I., Crosier, J., and Springston, S. R.
Abstract:: We evaluate a regional-scale simulation with the WRF-Chem model for the VAMOS (Variability of the American Monsoon Systems) Ocean-Cloud-Atmosphere-Land Study Regional Experiment (VOCALS-REx), which sampled the Southeast Pacific's persistent stratocumulus deck. Evaluation of VOCALS-REx ship-based and three aircraft observations focuses on analyzing how aerosol loading affects marine boundary layer (MBL)...
Resource Type:: Article
Full Text:: stratocumulus during VOCALS-REx P. E. Saide1, S. N. Spak1, G. R. Carmichael1, M. A. Mena-Carrasco2, Q. Yang3, S

Surface Flux Observations on the Southeastern Tropical Pacific Ocean and Attribution of SST Errors in Coupled Ocean–Atmosphere Models

Creator:: de Szoeke, Simon P., Fairall, Christopher W., Wolfe, Daniel E., Bariteau, Ludovic, and Zuidema, Paquita
Abstract:: A new dataset synthesizes in situ and remote sensing observations from research ships deployed to the southeastern tropical Pacific stratocumulus region for 7 years in boreal fall. Surface meteorology, turbulent and radiative fluxes, aerosols, cloud properties, and rawinsonde profiles were measured on nine ship transects along 20°S from 75° to...
Resource Type:: Article
Full Text:: Station buoy at 208S, 858W (Colbo and Weller 2007). Each cruise made a transect along 208S from 858 to

deSzoekeSimonCEOASMJOAir-Sea.pdf

Creator:: de Szoeke, Simon P., Edson, James B., Marion, June R., Fairall, Christopher W., and Bariteau, Ludovic
Abstract:: DYNAMO and TOGA-COARE observations and reanalysis-based surface flux products are used to test theories of atmosphere-ocean interaction that explain the Madden-Julian Oscillation (MJO). Negative intraseasonal outgoing longwave radiation, indicating deep convective clouds, is in phase with increased surface wind stress, decreased solar heating, and increased surface turbulent heat flux—mostly evaporation—from...
Full Text:: . Sea surface 26 temperature (SST) warms during the suppressed phase, reaching a maximum before the

deSzoekeSimonCEOASMJOAirSea.pdf

Creator:: de Szoeke, Simon P., Edson, James B., Marion, June R., Fairall, Christopher W., and Bariteau, Ludovic
Abstract:: DYNAMO and TOGA-COARE observations and reanalysis-based surface flux products are used to test theories of atmosphere-ocean interaction that explain the Madden-Julian Oscillation (MJO). Negative intraseasonal outgoing longwave radiation, indicating deep convective clouds, is in phase with increased surface wind stress, decreased solar heating, and increased surface turbulent heat flux—mostly evaporation—from...
Full Text:: , reaching a maximum before the onset of MJO convection. The timing of convection, surface flux, and SST is

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:: sample a unique combination of synoptic and interannual variability affecting the clouds; their ensemble

Ship Observations of the Tropical Pacific Ocean along the Coast of South America

Creator:: de Szoeke, Simon P., Fairall, C. W., and Pezoa, Sergio
Abstract:: In October 2007 the NOAA ship Ronald H. Brown sailed southward within 300 km of the coast of Ecuador and Peru, sampling surface meteorology, air–sea turbulent and radiative fluxes, cloud properties, and upper-air soundings from the equator to 20°S. Two distinct water masses characterize the coastal region: cold-pool water below...
Resource Type:: Article
Full Text:: Chief Scientist Robert Weller. REFERENCES Albrecht, B. A., C. S. Bretherton, D. Johnson, W. H

Variability in the Southerly Flow into the Eastern Pacific ITCZ

Creator:: de Szoeke, Simon P. and Bretherton, Christopher S.
Abstract:: During boreal summer and fall, there is a strong southerly boundary layer flow across the equator into the east Pacific intertropical convergence zone (ITCZ). The modulation of this flow on synoptic to seasonal time scales is studied using an index of meridional pressure difference between the equator and the ITCZ...
Resource Type:: Article
Full Text:: and fall, there is a strong southerly boundary layer flow across the equator into the east Pacific

EPIC 95°W Observations of the Eastern Pacific Atmospheric Boundary Layer from the Cold Tongue to the ITCZ

Creator:: de Szoeke, Simon P. and Bretherton, Christopher S.
Abstract:: The atmospheric boundary layer (ABL) along 95°W in the eastern equatorial Pacific during boreal autumn is described using data from the East Pacific Investigation of Climate (EPIC) 2001, with an emphasis on the evolution of the thermodynamic ABL properties from the cold tongue to the cold-advection region north of the...
Resource Type:: Article
Full Text:: Atmospheric Sciences, University of Washington, Seattle, Washington NICHOLAS A. BOND AND MEGHAN F. CRONIN

Quasi-Lagrangian Large Eddy Simulations of Cross-Equatorial Flow in the East Pacific Atmospheric Boundary Layer

Creator:: de Szoeke, Simon P. and Bretherton, C. S.
Abstract:: Using a large eddy simulation (LES), the atmospheric boundary layer (ABL) is numerically modeled along 95°W from 8°S to 4°N during boreal autumn, and compared to observations from the East Pacific Investigation of Climate Processes in the Coupled Ocean–Atmosphere System (EPIC) 2001. Since the local ABL winds are predominantly southerly...
Resource Type:: Article
Full Text:: atsc_61_1412.1837_1858.tp VOL. 61, NO. 15 1 AUGUST 2004J O U R N A L O

deSzoekeSimonCEOASComparisonMarineStratocumulus.pdf

Creator:: Garay, Michael J., de Szoeke, Simon P., and Moroney, Catherine M.
Abstract:: In order to better understand the general problem of satellite cloud top height retrievals for low clouds, observations made by NOAA research vessels in the stratocumulus region in the southeastern Pacific during cruises in 2001 and 2003 to 2006 were matched with near-coincident retrievals from the Moderate Resolution Imaging Spectroradiometer...
Full Text:: ) instruments on the Terra satellite, along with a limited set of ISCCP 30-km (DX) retrievals. The ISCCP cloud

ScholarsArchive@OSU

Ocean–Cloud–Atmosphere–Land Interactions in the Southeastern Pacific: The VOCALS Program

The VAMOS Ocean-Cloud-Atmosphere-Land Study Regional Experiment (VOCALS-REx): goals, platforms, and field operations

A comparison of ship and satellite measurements of cloud properties with global climate model simulations in the southeast Pacific stratus deck

A Motion-Stabilized W-Band Radar for Shipboard Observations of Marine Boundary-Layer Clouds

A regional real-time forecast of marine boundary layers during VOCALS-REx

Atmospheric sulfur cycling in the southeastern Pacific – longitudinal distribution, vertical profile, and diel variability observed during VOCALS-REx

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

Evaluating WRF-Chem aerosol indirect effects in Southeast Pacific marine stratocumulus during VOCALS-REx

Surface Flux Observations on the Southeastern Tropical Pacific Ocean and Attribution of SST Errors in Coupled Ocean–Atmosphere Models

deSzoekeSimonCEOASMJOAir-Sea.pdf

deSzoekeSimonCEOASMJOAirSea.pdf

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

Ship Observations of the Tropical Pacific Ocean along the Coast of South America

Variability in the Southerly Flow into the Eastern Pacific ITCZ

EPIC 95°W Observations of the Eastern Pacific Atmospheric Boundary Layer from the Cold Tongue to the ITCZ

Quasi-Lagrangian Large Eddy Simulations of Cross-Equatorial Flow in the East Pacific Atmospheric Boundary Layer

deSzoekeSimonCEOASComparisonMarineStratocumulus.pdf

Limit your search

Academic Affiliation

Creator

Date

Decade

Language

License

Peer Reviewed

Resource Type

Rights Statement

Search Constraints

Search Results

Limit your search