Analysis of metrological drought for Latur andOsmanabad district of Maharastra

Abstract

: Drought is a natural hazard that has significant impact on economic, agricultural, environmental and social aspects.The main objective of the research reported herein has been to develop an approach to analyse of meteorological droughts based on annual precipitation data.If 'A' is the mean weekly rainfall for 22 years of data from 1991 to 2012, then a week receiving rainfall less than 75 per cent of 'A' valueis defined as drought week and greater than 125 per cent of 'A' valueis defined as surplus week. Week having rainfall between 75 per cent of 'A' value and 125 per cent of 'A' value is considered as normal week. The rainfall distribution of Latur and Osmanabad district of Maharashtra state is quite erratic in space and occurrence of drought is common.In this study 22 years of rainfall data of Latur and Osmanabad district have been analyzed on yearly, monthly and weekly basis for predicting the water drought, normal and surplus event for crop planning in region. Weekly drought, normal and surplus events give a more precise idea about crop planning than yearly and monthly events. The analysis has reveals that the percentage of drought weeks is more than normal and surplus weeks. It has been also reveals that there is a need of supplemental irrigation during periods of water scarcity.

Optimizing Drought Prediction with LSTM and SPEI: A Two-Tier Ensemble Framework with Meta-Learner and Weighted Sum Fusion

“…In 2015, it received a mere 361 mm, less than half of its average of 723 mm, while July of that year saw a remarkably low 28 mm of rain with just 2 rainy days. This starkly contrasts with nearby Solapur, which, though facing water scarcity issues, received considerably more rainfall at 193.9 mm during the same period [7].…”

“…In 2015, it received a mere 361 mm, less than half of its average of 723 mm, while July of that year saw a remarkably low 28 mm of rain with just 2 rainy days. This starkly contrasts with nearby Solapur, which, though facing water scarcity issues, received considerably more rainfall at 193.9 mm during the same period [7].Thus, Latur, a region in drought-prone Marathwada, faces erratic rainfall and severe water stress for agriculture and daily needs. The rise in temperatures worsen water loss and increasing drought risks due to climate change, over-extraction of groundwater and scarce surface water exacerbate scarcity.…”

Analysis of Meterological Drought for Ajmer and Bikaner District of Rajasthan

“…Socioeconomic drought is associated with the supply and Impact Factor (JCC): 6.1964 NAAS Rating: 4.13 demand of some economic good with elements of meteorological, agricultural, and hydrological drought. These indices are based on rainfall, evapotranspiration, and temperature (Steinemann et al, 2005 (Kumar et al, 2009) and to know the chances of occurrence of drought during the critical stages of the crops and planning for protective irrigation and intercultural operations (Shinde et al, 2016). For the purpose of this study, meteorological drought was adopted where rainfall is commonly used for drought analysis.…”