Satellite estimates of surface radiative fluxes for the extended San Pedro Basin: sensitivity to aerosols

Pinker, R. T.

doi:10.1016/s0168-1923(00)00190-8

Cited by 16 publications

(3 citation statements)

References 23 publications

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“…The large bias in satellite estimates was reported in South America and Africa where biomass burning frequently outbroke in dry seasons [Konzelmann et al, 1996;Gupta et al, 2001]. This is largely due to an improper representation of aerosol optical thickness or absorption in satellite algorithms [Pinker et al, 2000]. The daily aerosol optical thickness occasionally exceeded 2.0 during the heavy pollution episode , which is close to the values observed during biomass burning period.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Analysis of downwelling surface solar radiation in China from National Centers for Environmental Prediction reanalysis, satellite estimates, and surface observations

Xia¹,

Wang²,

Chen³

et al. 2006

J. Geophys. Res.

105

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[1] Solar radiation reaching the surface in China was analyzed on the basis of four data sets. National Centers for Environment Prediction (NCEP) reanalysis solar radiation data exceeded surface observations by 40 W/m 2 to more than 100 W/m 2 . Satellite data sets produced by Goddard Institute for Space Studies (GISS) and University of Maryland (UMD) were correlated significantly with surface observations, but satellite estimates exceeded surface observations over much of China. The largest difference occurred in the middle reach of Yangze river and coast regions where satellite algorithms occasionally overestimated solar radiation by more than 40 W/m 2 . The mean bias of satellite estimates ranged from about 8 W/m 2 to about 36 W/m 2 in regional scale. The root-mean-square error varied from about 20 to 36 W/m 2 . The effects of differences in space-time sampling between satellite and surface data might account partly for the random uncertainties of satellite estimates. The systematic overestimation by satellite algorithms in China was most likely associated with aerosols and their complex interactions with clouds. Surface data indicated a significant decline in solar radiation from 1961 to 1990, but the decline trend did not persist into the 1990s. Instead, a pronounced increase trend has been observed from 1984 to 2000, ranging from 1.7% to 7.7% per decade. The decrease would not be expected given that the cloud amount decreased significantly during the same period, but this was in accordance with the increasing aerosol loading that was indicated by the visibility deterioration. NCEP data and satellite estimates indicated quite different trends in solar radiation. The marginal increase trends were derived on the basis of NCEP data from 1961 to 2000 in three regions except in south China. The trends derived from satellite estimates since the middle 1980s were much less than that of surface observations. Moreover, both satellite estimates showed decline trends over much of China from 1984 to 2000. These differences suggested that representation of aerosols and clouds should be improved in order to make satellite estimates more robust over regions with high aerosol loading.

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Section: Conclusion and Discussionmentioning

confidence: 99%

Analysis of downwelling surface solar radiation in China from National Centers for Environmental Prediction reanalysis, satellite estimates, and surface observations

Xia¹,

Wang²,

Chen³

et al. 2006

J. Geophys. Res.

105

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show abstract

“…(For example, Arizona Department of Water Resources, 2002;Bolm et al, 2002;Bredehoeft et al, 1999a,b;Carter et al, 2000;Chehbouni et al, 2000;Correll et al, 1996;Kepner et al, 2000Kepner et al, , 2002aKepner et al, , 2002bLacher, 1994;Liverman et al, 1997a,b;Liverman and Meredith, 2002;MacGuire, 1997;Maingi et al, 2002;Moote and Gutiérrez, 2001;Orr and Colby, 2002;Pinker et al, 2000;Pool and Coes, 1999;Skirvin et al, 2002;Snyder and Williams, 2000). Presently government agencies, academic institutions and non-governmental organizations on both sides of the border gather and disseminate information about the basin.…”

Section: Lesson 1: Standardize and Disseminate Datamentioning

confidence: 99%

From knowledge to action: lessons and planning strategies from studies of the upper San Pedro basin

McSherry

Steiner

Ozkeresteci

et al. 2006

Landscape and Urban Planning

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“…A wide variety of in situ and remotely sensed data were collected at these sites to address this objective (Moran et al, 2000;Pinker et al, 2000;Nouvellon et al, 2000b;Qi et al, 2000). A summary of timing, coverage, and sensor specifications of SALSArelated images is presented in Table 1.…”

Section: Objective Onementioning

confidence: 99%

Preface paper to the Semi-Arid Land-Surface-Atmosphere (SALSA) Program special issue

Goodrich¹,

Chehbouni²,

Goff³

et al. 2000

Agricultural and Forest Meteorology

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The Semi-Arid Land-Surface-Atmosphere Program (SALSA) is a multi-agency, multinational research effort that seeks to evaluate the consequences of natural and human-induced environmental change in semi-arid regions. The ultimate goal of SALSA is to advance scientific understanding of the semi-arid portion of the hydrosphere-biosphere interface in order to provide reliable information for environmental decision making. SALSA approaches this goal through a program of long-term, integrated observations, process research, modeling, assessment, and information management that is sustained by cooperation among scientists and information users. In this preface to the SALSA special issue, general program background information and the critical nature of semi-arid regions is presented. A brief description of the Upper San Pedro River Basin, the initial location for focused SALSA research follows. Several overarching research objectives under which much of the interdisciplinary research contained in the special issue was undertaken are discussed. Principal methods, primary research sites and data collection used by numerous investigators during 1997-1999 are then presented. Scientists from about 20 US, five European (four French and one Dutch), and three Mexican agencies and institutions have collaborated closely to make the research leading to this special issue a reality. The SALSA Program has served as a model of interagency cooperation by breaking new ground in the approach to large scale interdisciplinary science with relatively limited resources. Published by Elsevier Science B.V.

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Satellite estimates of surface radiative fluxes for the extended San Pedro Basin: sensitivity to aerosols

Cited by 16 publications

References 23 publications

Analysis of downwelling surface solar radiation in China from National Centers for Environmental Prediction reanalysis, satellite estimates, and surface observations

Analysis of downwelling surface solar radiation in China from National Centers for Environmental Prediction reanalysis, satellite estimates, and surface observations

From knowledge to action: lessons and planning strategies from studies of the upper San Pedro basin

Preface paper to the Semi-Arid Land-Surface-Atmosphere (SALSA) Program special issue

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