Results 161 to 170 of about 219,597 (186)

Drought Monitoring by Reconnaissance Drought Index (RDI) in Iran

Water Resources Management, 2011
Drought is one of the most important natural hazards in Iran and frequently affects a large number of people, causing tremendous economic losses, environmental damages and social hardships. Especially, drought has a strong impact on water resources in Iran. This situation has made more considerations toward the study and management of drought.
Mohammad Amin Asadi Zarch, Hossein Malekinezhad, Mohammad Hossein Mobin, Mohammad Taghi Dastorani, Mohammad Reza Kousari   +4 more
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Drought Monitoring from Space

2000
In order to accurately assess the occurrence, extent and severity of a drought it is necessary to get a correct picture of the spatial and temporal distribution of a number of meteorological, hydrological and surface variables. Space observations have the potential to make a significant contribution in this field.
J. V. Vogt, S. Niemeyer, F. Somma, I. Beaudin, A. A. Viau   +4 more
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Building a hybrid drought monitor model based on U.S. Drought Monitor

Drought is one of the costliest natural disasters, capable of causing significant losses in agriculture, economy, and ecosystems. Different definitions of drought from multiple perspectives made drought research complicate. Exploring droughts from a comprehensive perspective improves our understanding of the evolution and drivers of drought, while ...
Haiting Xu, Jianhui Wei, Ying Pan
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Monitoring Regional Drought Conditions

1993
Drought is a recurring phenomenon that receives greatest regional attention when it makes a major impact on the economy. Here an impact is taken to mean any change that can be directly or indirectly attributed to a drought. Drought intensity is closely tied to changes in the hydrological cycle because drought impacts can occur at any juncture in the ...
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Monitoring Drought: An Evaluation of Meteorological Drought Indices

Geography Compass, 2009
Abstract A uniform method for defining, monitoring and quantifying the severity of drought conditions does not exist. This article introduces some of the tools (e.g. drought indices) that are commonly used in the United States to monitor meteorological drought, describes the strengths and weaknesses of these tools, and makes ...
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Global drought Monitoring Web portal

2011 GEOSS Workshop XL - Managing Drought through Earth Observation, 2011
Information Leads - US NIDIS - NCDC - Europe - European Drought Observatory - Africa - Princeton University • Coordinators - GEO ...
Mike Brewer, Jason Symonds, Richard Heim
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Monitoring Drought in the West

Arid Land Research and Management, 2003
Although drought is difficult to define and measure, several indices are presently available to assist in rangeland monitoring and management. Several drought indices are noted with documentation where recent information may be easily found. Temporal and spatial considerations may be helpful in management applications.
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Monitoring and Predicting Agricultural Drought

2005
Agricultural droughts affect whole societies, leading to higher food costs, threatened economies, and even famine. In order to mitigate such effects, researchers must first be able to monitor them, and then predict them; however no book currently focuses on accurate monitoring or prediction of these devastating kinds of droughts. To fill this void, the
Vijendra K. Boken, Arthur P. Cracknell, Ronald L. Heathcote   +2 more
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Drought Monitoring as a Component of Drought Preparedness Planning

2009
Drought is the most complex of all natural hazards. The lack of progress in drought preparedness planning and the development of national drought policies is a reflection of this complexity. As countries move toward a higher level of preparedness, drought monitoring and early warning systems become paramount because these systems provide the ...
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Towards Monitoring Droughts from Space

Journal of Climate, 1990
Abstract The utility of the midafternoon satellite derived surface temperatures for detecting drought events is examined using the NOAA-9 AVHRR data over the U.S. Great Plains during 1986–88. The interannual differences in monthly mean clear-sky temperature and in monthly mean normalized difference vegetation index are compared to the corresponding ...
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