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dc.contributor.authorWood, Robert
dc.contributor.authorWyant, Matthew
dc.contributor.authorBretherton, Christopher S.
dc.contributor.authorRemillard, Jasmine
dc.contributor.authorKollias, Pavlos
dc.contributor.authorFletcher, Jennifer
dc.contributor.authorStemmler, Jayson
dc.contributor.authorde Szoeke, Simon P.
dc.contributor.authorYuter, Sandra E.
dc.contributor.authorMiller, Matthew
dc.contributor.authorMechem, David B.
dc.contributor.authorTselioudis, George
dc.contributor.authorChiu, J. Christine
dc.contributor.authorMann, Julian A. L.
dc.contributor.authorO'Connor, Ewan J.
dc.contributor.authorHogan, Robin J.
dc.contributor.authorDong, Xiquan
dc.contributor.authorMiller, Mark
dc.contributor.authorGhate, Virendra
dc.contributor.authorJefferson, Anne
dc.contributor.authorMin, Qilong
dc.contributor.authorMinnis, Patrick
dc.contributor.authorPalikonda, Rabindra
dc.contributor.authorAlbrecht, Bruce
dc.contributor.authorLuke, Ed
dc.contributor.authorHannay, Cecile
dc.contributor.authorLin, Yanluan
dc.identifier.citationWood, Robert. "Clouds, Aerosol, and Precipitation in the Marine Boundary Layer: Analysis of Results from the ARM Mobile Facility Deployment to the Azores (2009/2010)." (2013): n. pag.en_US
dc.description© Copyright 2015 American Meteorological Society (AMS). Permission to use figures, tables, and brief excerpts from this work in scientific and educational works is hereby granted provided that the source is acknowledged. Any use of material in this work that is determined to be “fair use” under Section 107 of the U.S. Copyright Act September 2010 Page 2 or that satisfies the conditions specified in Section 108 of the U.S. Copyright Act (17 USC §108, as revised by P.L. 94-553) does not require the AMS’s permission. Republication, systematic reproduction, posting in electronic form, such as on a web site or in a searchable database, or other uses of this material, except as exempted by the above statement, requires written permission or a license from the AMS. Additional details are provided in the AMS Copyright Policy, available on the AMS Web site located at ( or from the AMS at 617-227-2425 or
dc.description.abstractThe Clouds, Aerosol, and Precipitation in the Marine Boundary Layer (CAP-MBL) deployment at Graciosa Island in the Azores generated a 21-month (April 2009–December 2010) comprehensive dataset documenting clouds, aerosols, and precipitation using the Atmospheric Radiation Measurement Program (ARM) Mobile Facility (AMF). The scientific aim of the deployment is to gain improved understanding of the interactions of clouds, aerosols, and precipitation in the marine boundary layer.

Graciosa Island straddles the boundary between the subtropics and midlatitudes in the northeast Atlantic Ocean and consequently experiences a great diversity of meteorological and cloudiness conditions. Low clouds are the dominant cloud type, with stratocumulus and cumulus occurring regularly. Approximately half of all clouds contained precipitation detectable as radar echoes below the cloud base. Radar and satellite observations show that clouds with tops from 1 to 11 km contribute more or less equally to surface-measured precipitation at Graciosa. A wide range of aerosol conditions was sampled during the deployment consistent with the diversity of sources as indicated by back-trajectory analysis. Preliminary findings suggest important two-way interactions between aerosols and clouds at Graciosa, with aerosols affecting light precipitation and cloud radiative properties while being controlled in part by precipitation scavenging.

The data from Graciosa are being compared with short-range forecasts made with a variety of models. A pilot analysis with two climate and two weather forecast models shows that they reproduce the observed time-varying vertical structure of lower-tropospheric cloud fairly well but the cloud-nucleating aerosol concentrations less well. The Graciosa site has been chosen to be a permanent fixed ARM site that became operational in October 2013.
dc.publisherAmerican Meteorological Societyen_US
dc.subjectAtmosphere-ocean interactionen_US
dc.subjectHadley circulationen_US
dc.subjectLa Ninaen_US
dc.subjectMeridional overturning circulationen_US
dc.subjectDecadal variabilityen_US
dc.subjectSpring seasonen_US
dc.titleClouds, Aerosols, and Precipitation in the Marine Boundary Layer: An Arm Mobile Facility Deploymenten_US
kusw.kuauthorMechem, David
kusw.kudepartmentGeography & Atmospheric Scienceen_US
kusw.oaversionScholarly/refereed, publisher versionen_US
kusw.oapolicyThis item meets KU Open Access policy criteria.en_US

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