You just clipped your first slide! Top Answer. The results show that SPEI characterizes an overall increase in drought severity, area, and frequency during 1998–2015 compared with those during … A desert is a region that experiences low precipitation as an everyday occurrence. Characterization of Selected Drought Tolerance Rice Landraces: A Case in Kerala, India. Our objective was to determine how drought stress imposed on soybean [Glycine max (L.) Merr.] This provided insight not only into the historical perspective of anomalously dry and wet conditions, but also into the long-term variation of climate in the United States. Drought characteristics and management in the Caribbean FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS Rome, 2016 FAO WATER REPORTS 42 Caribbean Institute for Meteorology and Hydrology, St. James, Barbados and Land and Water Division, FAO, Rome. By Kallingil Gopi Divya. In this study, the response of sugarcane to drought and nitrogen application for physiol. Agricultural drought links various characteristics of meteorological drought to agricultural impacts, focusing on precipitation shortages, differences between actual and potential evapotranspiration, soil-water deficits, reduced groundwater or reservoir levels, and so on. Agricultural drought links various characteristics of meteorological (or hydrological) drought to agricultural impacts, focusing on precipitation shortages, differences between actual and potential evapotranspiration, soil water deficits, reduced groundwater or reservoir levels, and so forth. 0 0 1. The reconstruction of the sequence of drought 12 disaster in North China during the Ming and Qing D ynasties was based on Empirical Orthogonal Funct ion 13 (EOF ) and o n Rotated Empiri c Orthogonal Function (REOF) . 2011-06-22 05:53:47 2011-06-22 05:53:47. at various growth stages affected selected plant characteristics. Understanding the spatiotemporal characteristics of drought at the river basin scale is vital for water resources management. Understanding the characteristics of flash drought events and further predicting the onset of such events on subseasonal timescales is of critical importance for impact assessment, disaster mitigation, and loss prevention. Submitted: March 11th 2020 Reviewed: July 16th 2020 Published: August 14th 2020. @inproceedings{Edwards1997CharacteristicsO2, title={Characteristics of 20th Century Drought in the United States at Multiple Time Scales. This level reflects the rarity or extremeness of the event. By associating drought propagation mechanisms with climate and catchment characteristics, this study provides a more process‐based explanation of drought propagation. To analyze flash drought characteristics, we utilize historical USDM maps from 2000 to 2017. Answer. Asked by Wiki User. We identify snow drought hot spots and determine how drought duration and intensity vary globally. The insights provided by this modeling study can help better interpret observed drought propagation patterns around the world on the basis of the dominant climate and catchment characteristics. The spatiotemporal variations in drought characteristics (e.g., the drought occurrence time, duration, severity, peak, and frequency and the percentage of stations suffering from drought (PSSD) were estimated by the projected SPEI for the periods 2011-2040, 2041-2070 and 2071-2100. and agronomical characteristics was investigated. Li et al. Intensity commonly refers to the severity of the precipitation deficit and how quickly it develops. It occurs when evaporation and transpiration exceed precipitation for … Home > Books > Plant Stress Physiology [Working Title] Downloaded: 50 . Now customize the name of a clipboard to store your clips. Sonh and Bae [31] investigated the changes in drought characteristics according to the shift in di erent climates from tropical, temperate, cold and polar to arid climate over the Asia monsoon region. Wiki User Answered . Gibberellins play an important role in inducing anthesis during the vegetative growth stage in many species, including leafy vegetables such as lettuce. The result indicated that drought characteristics using the SPEI and NCDA can capture better historical drought conditions than that using the SPI and NCDA. The definition of drought intensity is based on the percent of the total drought index value to the months of drought duration [8, 10], as shown by the following formula:Consequently, for each detected socioeconomic drought event, the drought level (SDL) is defined with the indicator value and duration grades : Otro: "4 Figures" "25 References" "4 Figures;25 References;" Guardar como: AGRIS_AP RIS EndNote(XML) Acerca de AGRIS Contribuya Servicios Comentarios Causes and Characteristics of Drought in Ethiopia. The temporal and spatial characteristics of meteorological drought are investigated to provide a framework for sustainable water resources management in the region of Thessaly, Greece. 11 characteristics of drought disaster in North China. DOI: 10.5772/intechopen.93396. A drought is then defined as a period with a percentile soil moisture value less than a chosen level which represents the drought magnitude. What are the characteristics of a drought? Rice is a staple food of more than half of the world’s population. Drought deficit charac-teristics, such as drought duration and deficit volume, are derived with the threshold level method. Characteristics of drought include impacts, intensity, duration, spatial extent, and timing. Abstract. Characteristics of drought and wet periods were analyzed in terms of areal coverage, intensity, duration, frequency, and variability at different space and time scales. One is to analyse low flow characteristics. Even the intensity can change to become increasingly rare until it doesn’t go down at all. Drought stress which often occurs during early growth stage is one constraint in sugarcane prodn. Gocic and Trajkovic [32] explored the drought characteristics in the territory of Serbia and classified the study area into three sub-regions based on the drought identification. The writers have formulated a conceptual model of drought characterization across the climatic spectrum, primarly suited to subtropical and midlatitudinal regions. and compare drought characteristics between locations in a consistent manner. USDM maps are produced weekly in ArcGIS shapefile format through expert synthesis of various data sources, including precipitation, soil moisture, streamflow, snow water equivalent and snowpack, crop and vegetation conditions, and reservoir and groundwater levels (Svoboda 2002). Drought area (drought severity) has increased (decreased) by about 1.16% (0.015%) per decade over entire China. Given the importance of snow to global food, water, and energy security, characterizing snow deficits (snow droughts) in a changing climate has emerged as a critical knowledge gap. Characteristics and types of droughts. Drought characteristics, such as drought area, severity, duration, and frequency were examined based on multi‐data set mean scPDSI. 5 rive streamflow drought characteristics are evaluated based on their application to daily streamflow series from a wide range of hydrological regimes. Drought severity was classified from gridded SPIs and SPEIs using a Non-Contiguous Drought Area (NCDA) approach.