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Sky Cover from Mfrsr Observations : Volume 4, Issue 7 (20/07/2011)

By Kassianov, E.

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Book Id: WPLBN0003974766
Format Type: PDF Article :
File Size: Pages 8
Reproduction Date: 2015

Title: Sky Cover from Mfrsr Observations : Volume 4, Issue 7 (20/07/2011)  
Author: Kassianov, E.
Volume: Vol. 4, Issue 7
Language: English
Subject: Science, Atmospheric, Measurement
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2011
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Berg, L. K., Flynn, C., Barnard, J. C., Kassianov, E., & Long, C. N. (2011). Sky Cover from Mfrsr Observations : Volume 4, Issue 7 (20/07/2011). Retrieved from http://www.ebooklibrary.org/


Description
Description: Pacific Northwest National Laboratory, Richland, Washington, 99352, USA. The diffuse all-sky surface irradiances measured at two nearby wavelengths in the visible spectral range and their modeled clear-sky counterparts are the main components of a new method for estimating the fractional sky cover of different cloud types, including cumuli. The performance of this method is illustrated using 1-min resolution data from a ground-based Multi-Filter Rotating Shadowband Radiometer (MFRSR). The MFRSR data are collected at the US Department of Energy Atmospheric Radiation Measurement (ARM) Climate Research Facility (ACRF) Southern Great Plains (SGP) site during the summer of 2007 and represent 13 days with cumuli. Good agreement is obtained between estimated values of the fractional sky cover and those provided by a well-established independent method based on broadband observations.

Summary
Sky cover from MFRSR observations

Excerpt
Alexandrov, M. D., Lacis, A., Carlson, B. E., and Cairns, B.: Remote sensing of atmospheric aerosols and trace gases by means of Multifilter Rotating Shadowband Radiometer, Part II: climatological applications, J. Atmos. Sci., 59, 544–566, 2002.; Alexandrov, M. D., Schmid, B., Turner, D. D., Cairns, B., Oinas, V., Lacis, A. A., Gutman, S. I., Westwater, E. R., Smirnov, A., and Eilers, J.: Columnar water vapor retrievals from multifilter rotating shadowband radiometer data, J. Geophys. Res., 114, D02306, doi:10.1029/2008JD010543, 2009.; Berg, L. K and Kassianov, E. I.: Temporal variability of fair-weather cumulus statistics at the ACRF SGP site, J. Climate, 21, 3344–3358, 2008.; Berg, L. K., Kassianov, E., Long, C. N., and Mills Jr., D. L.: Surface summertime radiative forcing by shallow cumuli at the ARM SGP, J. Geophys. Res., 116, D01202, doi:10.1029/2010JD014593, 2011.; Dong, X., Xi, B., and Minnis, P.: A climatology of midlatitude continental clouds from the ARM SGP Central Facility. Part II: Cloud fraction and surface radiative forcing, J. Climate, 19, 1765–1783, 2006.; Dupont, J.-C., Haeffelin, M., and Long, C. N.: Evaluation of cloudless-sky periods detected by shortwave and longwave algorithms using lidar measurements, Geophys. Res. Lett., 35, L10815, doi:10.1029/2008GL033658, 2008.; Hahn, C., Rossow, W., and Warren, S.: ISCCP cloud properties associated with standard cloud types identified in individual surface observation. J. Climate, 14, 11–28, 2001.; Harrison, L. and Michalsky, J.: Objective algorithms for the retrieval of optical depths from ground-based measurements, J. Appl. Opt., 22, 5126–5132, 1994.; Kassianov, E. and Kogan, Y. L.: Spectral dependence of radiative horizontal transport in stratocumulus clouds and its effect on near-IR absorption, J. Geophys. Res., 107(D23), 4712, doi:10.1029/2002JD002103, 2002.; Kassianov, E., Long, C. N., and Ovtchinnikov, M.: Cloud sky cover versus cloud fraction: whole-sky simulations and observations, J. Appl. Meteorol., 44, 86– 98, 2005a.; Kassianov, E., Long, C. N., and Christy, J.: Cloud-base-height estimation from paired ground-based hemispherical observations, J. Appl. Meteor., 44, 1221–1233, 2005b.; Kassianov, E., Flynn, C. J., Ackerman, T. P., and Barnard, J. C.: Aerosol single-scattering albedo and asymmetry parameter from MFRSR observations during the ARM Aerosol IOP 2003, Atmos. Chem. Phys., 7, 3341–3351, doi:10.5194/acp-7-3341-2007, 2007.; Kassianov, E., Barnard, J., Berg, L. K., Long, C. N., and Flynn, C.: Shortwave Spectral Radiative Forcing of Cumulus Clouds from Surface Observations, Geophys. Res. Lett.,38, L07801, doi:10.1029/2010GL046282, 2011.; Kaufman, Y. J. and Koren, I.: Smoke and pollution aerosol effect on cloud cover, Science, 313, 655–658, 2006.; Koren, I., Oreopoulos, L., Feingold, G., Remer, L. A., and Altaratz, O.: How small is a small cloud?, Atmos. Chem. Phys., 8, 3855–3864, doi:10.5194/acp-8-3855-2008, 2008.; Lane, D. E., Goris, K., and Somerville, R. C. J.: Radiative transfer through broken clouds: Observations and model validation, J. Climate, 15, 2921–2933, 2002.; Long, C. N., Ackerman, T. P., Gaustad, K. L., and Cole, J. N. S.: Estimation of fractional sky cover from broadband shortwave radiometer measurements, J. Geophys. Res., 111, D11204, doi:10.1029/2005JD006475, 2006.; McComiskey, A., Schwartz, S. E., Schmid, B., Guan, H., Lewis, E. R., Ricchiazzi, P., and Ogren, J. A.: Direct aerosol forcing: Calculation from observables and sensitiv

 

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