Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Download Analysis Of Spatial Performance Of Meteorological Drought Indices full books in PDF, epub, and Kindle. Read online Analysis Of Spatial Performance Of Meteorological Drought Indices ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author : Sandeep Patil
Publisher :
ISBN 13 :
Total Pages : 66 pages
Book Rating : 4.:/5 (17 download)
Download or read book Analysis of Spatial Performance of Meteorological Drought Indices written by Sandeep Patil and published by . This book was released on 2013 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 66 pages
Book Rating : 4.:/5 (871 download)
Download or read book Analysis of Spatial Performance of Meteorological Drought Indices written by and published by . This book was released on 2012 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sandeep Ramesh Patil
Publisher :
ISBN 13 :
Total Pages : 66 pages
Book Rating : 4.:/5 (869 download)
Download or read book Analysis of Spatial Performance of Meteorological Drought Indices written by Sandeep Ramesh Patil and published by . This book was released on 2012 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: Meteorological drought indices are commonly calculated from climatic stations that have long-term historical data and then converted to a regular grid using spatial interpolation methods. The gridded drought indices are mapped to aid decision making by policy makers and the general public. This study analyzes the spatial performance of interpolation methods for meteorological drought indices in the United States based on data from the Co-operative Observer Network (COOP) and United States Historical Climatology Network (USHCN) for different months, climatic regions and years. An error analysis was performed using cross-validation and the results were compared for the 9 climate regions that comprise the United States. Errors are generally higher in regions and months dominated by convective precipitation. Errors are also higher in regions like the western United States that are dominated by mountainous terrain. Higher errors are consistently observed in the southeastern U.S. especially in Florida. Interpolation errors are generally higher in the summer than winter. The accuracy of different drought indices was also compared. The Standardized Precipitation and Evapotranspiration Index (SPEI) tends to have lower errors than Standardized Precipitation Index (SPI) in seasons with significant convective precipitation. This is likely because SPEI uses both precipitation and temperature data in its calculation, whereas SPI is based solely on precipitation. There are also variations in interpolation accuracy based on the network that is used. In general, COOP is more accurate than USHCN because the COOP network has a higher density of stations. USHCN is a subset of the COOP network that is comprised of high quality stations that have a long and complete record. However the difference in accuracy is not as significant as the difference in spatial density between the two networks. For multiscalar SPI, USHCN performs better than COOP because the stations tend to have a longer record. The ordinary kriging method (with optimal function fitting) performed better than Inverse Distance Weighted (IDW) methods (power parameters 2.0 and 2.5) in all cases and therefore it is recommended for interpolating drought indices. However, ordinary kriging only provided a statistically significant improvement in accuracy for the Palmer Drought Severity Index (PDSI) with the COOP network. Therefore it can be concluded that IDW is a reasonable method for interpolating drought indices, but optimal ordinary kriging provides some improvement in accuracy. The most significant factor affecting the spatial accuracy of drought indices is seasonality (precipitation climatology) and this holds true for almost all the regions of U.S. for 1-month SPI and SPEI. The high-quality USHCN network gives better interpolation accuracy with 6-, 9- and 12-month SPI and variation in errors amongst the different SPI time scales is minimal. The difference between networks is also significant for PDSI. Although the absolute magnitude of the differences between interpolation with COOP and USHCN are small, the accuracy of interpolation with COOP is much more spatially variable than with USHCN.
Author : Lena M. Tallaksen
Publisher : Gulf Professional Publishing
ISBN 13 : 9780444516886
Total Pages : 634 pages
Book Rating : 4.5/5 (168 download)
Download or read book Hydrological Drought written by Lena M. Tallaksen and published by Gulf Professional Publishing. This book was released on 2004 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt: The majority of the examples are taken from regions where the rivers run most of the year.
Author : Vijay P. Singh
Publisher : CRC Press
ISBN 13 : 1000905616
Total Pages : 615 pages
Book Rating : 4.0/5 (9 download)
Download or read book Integrated Drought Management, Volume 1 written by Vijay P. Singh and published by CRC Press. This book was released on 2023-09-12 with total page 615 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first volume of this comprehensive global perspective on Integrated Drought Management is focused on understanding drought, causes, and the assessment of drought impacts. It explains different types of drought: agricultural, meteorological, hydrological, and socioeconomic droughts, their indices and the impact of climate change on drought. The volume also examines spatiotemporal analysis of drought, variability and patterns, assessment, and drought evaluation. With numerous case studies from India, Mexico, Turkey, Brazil, US, and other countries, this volume serves as a valuable resource for all readers who want to advance their knowledge on drought and risk management. Features: Provides a global perspective on drought prediction and management and a synthesis of the recent state of knowledge. Covers a wide range of topics from essential concepts and advanced techniques for forecasting and modeling drought to societal impacts, consequences, and planning. Presents numerous case studies with different management approaches from different regions and countries. Addresses how climate change impacts drought, the increasing challenges associated with managing drought, decision making, and policy implications. Includes contributions from hundreds of experts around the world. Professionals, researchers, academics, and postgraduate students with knowledge in environmental sciences, ecology, agriculture, forestry, hydrology, water resources engineering, and earth sciences, as well as those interested in how climate change impacts drought management, will gain new insights from the experts featured in this two-volume handbook.
Author : United Nations Environment Programme
Publisher : UN
ISBN 13 : 9789211005806
Total Pages : 40 pages
Book Rating : 4.0/5 (58 download)
Download or read book The El Niño Phenomenon written by United Nations Environment Programme and published by UN. This book was released on 1992 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: An examination of the effects of, and research into, the El Nino phenomenon. Originating in the Pacific region, El Nino effects a reversal in the direction of winds and ocean currents, and changes in ocean temperature between Indonesia and the Pacific coas
Author : Smakhtin, Vladimir U
Publisher : IWMI
ISBN 13 : 9290905786
Total Pages : 32 pages
Book Rating : 4.2/5 (99 download)
Download or read book Review, automated estimation and analyses of drought indices in South Asia written by Smakhtin, Vladimir U and published by IWMI. This book was released on 2004 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper reviews the existing indices which have been developed for monitoring and quantitative assessment of droughts, and analyzes their applicability for drought prediction and management in the specific context of South Asia. It further describes the suite of routines, which have been developed for automated estimation, display and analyses of various drought indices. The suite forms part of the comprehensive computer package, developed earlier and designed to perform the multitude of water resources analyses and hydrometeorological data processing. The seven-step procedure of setting up and running a typical drought-assessment application is described in detail.
Author : Vijendra K. Boken
Publisher : Oxford University Press
ISBN 13 : 019516234X
Total Pages : 495 pages
Book Rating : 4.1/5 (951 download)
Download or read book Monitoring and Predicting Agricultural Drought written by Vijendra K. Boken and published by Oxford University Press. This book was released on 2005-04-14 with total page 495 pages. Available in PDF, EPUB and Kindle. Book excerpt: Basic concepts and drought analysis. Remote sensing. NOAA/AVHRR satellite data-based indices for monitoring agricultural droughts. The Americas. Europe, Russia, and the near east. Asia and Australia. International efforts and climate change.
Author : Brian D. Wardlow
Publisher : CRC Press
ISBN 13 : 1439835578
Total Pages : 487 pages
Book Rating : 4.4/5 (398 download)
Download or read book Remote Sensing of Drought written by Brian D. Wardlow and published by CRC Press. This book was released on 2012-04-24 with total page 487 pages. Available in PDF, EPUB and Kindle. Book excerpt: Remote Sensing of Drought: Innovative Monitoring Approaches presents emerging remote sensing-based tools and techniques that can be applied to operational drought monitoring and early warning around the world. The first book to focus on remote sensing and drought monitoring, it brings together a wealth of information that has been scattered throughout the literature and across many disciplines. Featuring contributions by leading scientists, it assembles a cross-section of globally applicable techniques that are currently operational or have potential to be operational in the near future. The book explores a range of applications for monitoring four critical components of the hydrological cycle related to drought: vegetation health, evapotranspiration, soil moisture and groundwater, and precipitation. These applications use remotely sensed optical, thermal, microwave, radar, and gravity data from instruments such as AMSR-E, GOES, GRACE, MERIS, MODIS, and Landsat and implement several advanced modeling and data assimilation techniques. Examples show how to integrate this information into routine drought products. The book also examines the role of satellite remote sensing within traditional drought monitoring, as well as current challenges and future prospects. Improving drought monitoring is becoming increasingly important in addressing a wide range of societal issues, from food security and water scarcity to human health, ecosystem services, and energy production. This unique book surveys innovative remote sensing approaches to provide you with new perspectives on large-area drought monitoring and early warning.
Author : Tae-Woong Kim
Publisher : MDPI
ISBN 13 : 3039368060
Total Pages : 168 pages
Book Rating : 4.0/5 (393 download)
Download or read book The Drought Risk Analysis, Forecasting, and Assessment under Climate Change written by Tae-Woong Kim and published by MDPI. This book was released on 2021-01-06 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Special Issue is a platform to fill the gaps in drought risk analysis with field experience and expertise. It covers (1) robust index development for effective drought monitoring; (2) risk analysis framework development and early warning systems; (3) impact investigations on hydrological and agricultural sectors; (4) environmental change impact analyses. The articles in the Special Issue cover a wide geographic range, across China, Taiwan, Korea, and the Indo-China peninsula, which covers many contrasting climate conditions. Hence, the results have global implications: the data, analysis/modeling, methodologies, and conclusions lay a solid foundation for enhancing our scientific knowledge of drought mechanisms and relationships to various environmental conditions.
Author : Justin Sheffield
Publisher : Routledge
ISBN 13 : 1136540407
Total Pages : 250 pages
Book Rating : 4.1/5 (365 download)
Download or read book Drought written by Justin Sheffield and published by Routledge. This book was released on 2012-11-12 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drought is one of the likely consequences of climate change in many regions of the world. Together with an increased demand for water resources to supply the world's growing population, it represents a potentially disastrous threat to water supplies, agriculture and food production, leading to famine and environmental degradation. Yet predicting drought is fraught with difficulty. The aim of this book is to provide a review of the historical occurrence of global drought, particularly during the 20th century and assess the likely potential changes over the 21st century under climate change. This includes documentation of the occurrence and impacts of major 20th century drought events and analysis of the contributing climatic and environmental factors that act to force, prolong and dissipate drought. Contemporary drought is placed in the context of climate variability since the last ice age, including the many severe and lengthy drought events that contributed to the demise of great civilizations, the disappearance of lakes and rivers, and the conversion of forests to deserts. The authors discuss the developing field of drought monitoring and seasonal forecasting and describe how this is vital for identifying emerging droughts and for providing timely warning to help reduce the impacts. The book provides a broad overview of large scale drought, from historic events such as the US Dust Bowl and African Sahel, and places this in the context of climate variability and change. The work is soundly based on detailed research that has looked at drought occurrence over the 20th century, global drought monitoring, modelling and seasonal prediction, and future projections from climate models.
Author : Theodore Karacostas
Publisher : Springer
ISBN 13 : 9783319350943
Total Pages : 0 pages
Book Rating : 4.3/5 (59 download)
Download or read book Perspectives on Atmospheric Sciences written by Theodore Karacostas and published by Springer. This book was released on 2016-09-10 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides the proceedings of the 13th International Conference of Meteorology, Climatology and Atmospheric Physics (COMECAP 2016) that is held in Thessaloniki from 19 to 21 September 2016. The Conference addresses fields of interest for researchers, professionals and students related to the following topics: Agricultural Meteorology and Climatology, Air Quality (Indoor and Outdoor), Applied Meteorology and Climatology, Applications of Meteorology in the Energy sector, Atmospheric Physics and Chemistry, Atmospheric Radiation, Atmospheric Boundary layer, Biometeorology and Bioclimatology, Climate Dynamics, Climatic Changes, Cloud Physics, Dynamic and Synoptic Μeteorology, Extreme Events, Hydrology and Hydrometeorology, Mesoscale Meteorology, Micrometeorology-Urban Microclimate, Remote Sensing- Satellite Meteorology and Climatology, Weather Analysis and Forecasting. The book includes all papers that have been accepted after peer review for presentation in the conference.
Author : Balaji Narasimhan
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (775 download)
Download or read book Development of Indices for Agricultural Drought Monitoring Using a Spatially Distributed Hydrologic Model written by Balaji Narasimhan and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Farming communities in the United States and around the world lose billions of dollars every year due to drought. Drought Indices such as the Palmer Drought Severity Index (PDSI) and Standardized Precipitation Index (SPI) are widely used by the government agencies to assess and respond to drought. These drought indices are currently monitored at a large spatial resolution (several thousand km2). Further, these drought indices are primarily based on precipitation deficits and are thus good indicators for monitoring large scale meteorological drought. However, agricultural drought depends on soil moisture and evapotranspiration deficits. Hence, two drought indices, the Evapotranspiration Deficit Index (ETDI) and Soil Moisture Deficit Index (SMDI), were developed in this study based on evapotranspiration and soil moisture deficits, respectively. A Geographical Information System (GIS) based approach was used to simulate the hydrology using soil and land use properties at a much finer spatial resolution (16km2) than the existing drought indices. The Soil and Water Assessment Tool (SWAT) was used to simulate the long-term hydrology of six watersheds located in various climatic zones of Texas. The simulated soil water was well-correlated with the Normalized Difference Vegetation Index NDVI (r ~ 0.6) for agriculture and pasture land use types, indicating that the model performed well in simulating the soil water. Using historical weather data from 1901-2002, long-term weekly normal soil moisture and evapotranspiration were estimated. This long-term weekly normal soil moisture and evapotranspiration data was used to calculate ETDI and SMDI at a spatial resolution of 4km x 4km. Analysis of the data showed that ETDI and SMDI compared well with wheat and sorghum yields (r> 0.75) suggesting that they are good indicators of agricultural drought. Rainfall is a highly variable input both spatially and temporally. Hence, the use of NEXRAD rainfall data was studied for simulating soil moisture and drought. Analysis of the data showed that raingages often miss small rainfall events that introduce considerable spatial variability among soil moisture simulated using raingage and NEXRAD rainfall data, especially during drought conditions. The study showed that the use of NEXRAD data could improve drought monitoring at a much better spatial resolution.
Download or read book The Detection and Prediction of Agricultural Drought in the Canadian Prairies written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Wayne C. Palmer
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.0/5 ( download)
Download or read book Meteorological Drought written by Wayne C. Palmer and published by . This book was released on 1965 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: The underlying concept of the paper is that the amount of precipitation required for the near-normal operation of the established economy of an area during some stated period is dependent on the average climate of the area and on the prevailing meteorological conditions both during and preceding the month or period in question. A method for computing this required precipitation is demonstrated.
Author : Giuseppe Rossi
Publisher : Springer Science & Business Media
ISBN 13 : 1402059248
Total Pages : 418 pages
Book Rating : 4.4/5 (2 download)
Download or read book Methods and Tools for Drought Analysis and Management written by Giuseppe Rossi and published by Springer Science & Business Media. This book was released on 2007-07-26 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: Frequent drought events have recently occurred in different Mediterranean regions. These have highlighted a general inadequacy of the current strategies applied to mitigate negative impacts of such phenomenon. This book provides various methods of drought monitoring at different spatial scales, as well as innovative drought forecasting techniques based on stochastic approaches. Besides common drought indices (i.e. SPI), new agrometeorological indices are proposed.
Author : Ravinesh C. Deo
Publisher : Springer Nature
ISBN 13 : 9811557721
Total Pages : 469 pages
Book Rating : 4.8/5 (115 download)
Download or read book Intelligent Data Analytics for Decision-Support Systems in Hazard Mitigation written by Ravinesh C. Deo and published by Springer Nature. This book was released on 2020-07-29 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights cutting-edge applications of machine learning techniques for disaster management by monitoring, analyzing, and forecasting hydro-meteorological variables. Predictive modelling is a consolidated discipline used to forewarn the possibility of natural hazards. In this book, experts from numerical weather forecast, meteorology, hydrology, engineering, agriculture, economics, and disaster policy-making contribute towards an interdisciplinary framework to construct potent models for hazard risk mitigation. The book will help advance the state of knowledge of artificial intelligence in decision systems to aid disaster management and policy-making. This book can be a useful reference for graduate student, academics, practicing scientists and professionals of disaster management, artificial intelligence, and environmental sciences.
