Trends and behaviour of meteorological drought (1901-2008) over Indian region using standardized precipitation-evapotranspiration index

2015 ◽  
Vol 36 (2) ◽  
pp. 909-916 ◽  
Author(s):  
Prabir Kumar Das ◽  
Dibyendu Dutta ◽  
J. R. Sharma ◽  
V. K. Dadhwal
Keyword(s):  
Meteorological Drought ◽  
Indian Region ◽  
Standardized Precipitation Evapotranspiration Index

Identification of future meteorological drought hotspots over Indian region: A study based on NEX‐GDDP data

2021 ◽  
Author(s):  
Subhadarsini Das ◽  
Jew Das ◽  
Nanduri Venkata Umamahesh
Keyword(s):  
Meteorological Drought ◽  
Indian Region

scholarly journals ANALISIS KETERKAITAN ANTARA KEKERINGAN METEOROLOGIS DENGAN INDEKS VEGETASI TERSTANDARISASI DI PULAU LOMBOK

2021 ◽  
Vol 22 (2) ◽  
pp. 41-49
Author(s):  
Siti Najma Nindya Utami ◽  
Rista Hernandi Virgianto ◽  
Dzikrullah Akbar
Keyword(s):  
Vegetation Index ◽  
Meteorological Drought ◽  
Agricultural Drought ◽  
Maximum Temperature ◽  
Drought Indices ◽  
Drought Risk ◽  
Observation Data ◽  
Standardized Precipitation Evapotranspiration Index ◽  
Length Of The Day ◽  
Lombok Island

Intisari Kekeringan merupakan bencana kompleks yang dapat menyebabkan kerugian masyarakat di berbagai sektor. Salah satu wilayah yang berisiko tinggi mengalami kekeringan adalah Pulau Lombok. Wilayah ini memiliki lahan yang berisiko terkena kekeringan seluas 405.985 ha. Tingkat keparahan kekeringan meteorologis dapat diukur dengan Standardized Precipitation Evapotranspiration Index (SPEI). Salah satu karakteristik kekeringan adalah kondisi vegetasi tanaman yang buruk, oleh karena itu Standardized Vegetation Index (SVI) digunakan sebagai acuan dalam monitoring kekeringan agrikultural. Penelitian ini bertujuan untuk mengetahui hubungan antara SPEI dengan SVI untuk setiap pos hujan di Pulau Lombok tahun 2001-2018. Penelitian ini menggunakan data bulanan tahun 2001-2018 yang meliputi data observasi curah hujan, suhu maksimum, suhu minimum, penginderaan jauh Normalized Differences Vegetation Index (NDVI) dengan resolusi 0,05°, model FLDAS kecepatan angin yang juga didapatkan dengan resolusi 0,5°, lama penyinaran matahari, lintang, dan elevasi. Metode yang digunakan yaitu menghitung indeks kekeringan SPEI dan SVI, kemudian menghitung korelasi dan signifikansi untuk kedua indeks kekeringan tersebut. Hasilnya menunjukkan bahwa SPEI1 lebih tinggi berkorelasi dengan SVI+1 dengan kategori cukup kuat. Untuk SPEI3, SPEI6, dan SPEI12 berkorelasi cukup kuat hingga kuat dengan SVI0. Hal ini menunjukkan bahwa kekeringan jangka panjang akan langsung mempengaruhi kekeringan agrikultural atau kekeringan vegetasi saat itu juga. Nilai korelasi yang lebih tinggi untuk setiap indeks tersebar di pos hujan yang terletak di tengah-tengah Pulau Lombok, karena pengaruh kondisi geografis dan demografis Abstract Drought is a complex disaster because it can cause loss to society in various sectors. One of the high-risk areas of drought is Lombok Island. This area has 405,985 ha of drought risk. The severity of meteorological drought can be measured by the Standardized Precipitation Evapotranspiration Index (SPEI). One of the characteristics of drought is the poor condition of plant vegetation, therefore the Standardized Vegetation Index (SVI) is used as a reference in monitoring agricultural drought. This study aims to determine the relationship of SPEI with SVI for each rainfall post in Lombok Island from 2001-2018. This study uses monthly data from 2001-2018, including observation data of rainfall, maximum temperature, minimum temperature, remote sensing Normalized Differences Vegetation Index (NDVI) 0.05 °, FLDAS model of wind speed 0.5 °, length of the day, latitude, and elevation. The use method is to calculate SPEI and SVI, then calculate the correlation and significance for the two drought indices. The result shows that SPEI1 is higher in correlation with SVI+1, which is in a strong enough category. For SPEI3, SPEI6, and SPEI12, the correlation is strong enough to strong with SVI0. This suggests that long-term drought will directly affect agricultural drought or immediate vegetation drought. The higher correlation values ??for each index are spread over the rain posts located in the middle of Lombok Island because geographic and demographic conditions influence them.  

scholarly journals Investigating the response of LAI to droughts in southern African vegetation using observations and model-simulations

2020 ◽  
Author(s):  
Shakirudeen Lawal ◽  
Stephen Sitch ◽  
Danica Lombardozzi ◽  
Julia E. M. S. Nabel ◽  
Hao-Wei Wey ◽  
...  
Keyword(s):  
Time Scales ◽  
Southern Africa ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Meteorological Drought ◽  
Standardized Precipitation Evapotranspiration Index ◽  
Area Index ◽  
Model Simulations ◽  
Dry Spells ◽  
The World

Abstract. In many regions of the world, frequent and continual dry spells are exacerbating drought conditions, which have severe impacts on vegetation biomes. Vegetation in southern Africa is among the most affected by drought. Here, we assessed the spatiotemporal characteristics of meteorological drought in southern Africa using the Standardized Precipitation Evapotranspiration Index over a 30-year period (1982–2011). The severity and the effects of droughts on vegetation productiveness were examined at different drought time-scales (1- to 24-month time-scales). In this study, we characterized vegetation using the Leaf Area Index, after evaluating its relationship with the Normalized Difference Vegetation Index. We found that the LAI responds strongly (r = 0.6) to drought over the central and south eastern parts of the region, with weaker impacts (r 

scholarly journals Assessment of Meteorological Drought with Application of Standardized Precipitation Evapotranspiration Index (SPEI) for Tripura, Northeast India

2021 ◽  
pp. 126-135
Author(s):  
Aribam Priya Mahanta Sharma ◽  
D. Jhajharia ◽  
G. S. Yurembam ◽  
S. Gupta
Keyword(s):  
Meteorological Drought ◽  
Northeast India ◽  
Spatial And Temporal Variation ◽  
Monthly Precipitation ◽  
Standardized Precipitation Evapotranspiration Index ◽  
Geospatial Technique ◽  
Scarce Water ◽  
Drought Mitigation ◽  
Resources Planning ◽  
Monthly Precipitation Data

Drought is one of the major water-related natural hazards. Understanding the spatial and temporal variation of rainfall is of great importance in water resources planning and management as it is related with food security and management of scarce water resource, which becomes critical in case of drought events. The advent of GIS to produce spatially interpolated drought map helps the water managers to undertake appropriate measures in drought relief and prioritization of drought mitigation works. Limitation of literature on Tripura suggests that study of drought over Tripura could help in strengthening of mitigation planes and rationalization of disaster management policies. Hence, the present study is focused to investigate the drought persistence and severity in the Tripura state of India during the period 1980-2013, using Standardized Precipitation Evapotranspiration Index (SPEI). Three time scale i.e., 3, 6 and 12 month time scales were opted for the study. Gridded monthly precipitation data distributed over the four districts of Tripura was used for drought analysis. Significant drought events were detected over the study area during the selected period. Annual analysis of SPI time series showed that the study area received the intense drought during the year 1985. Geospatial technique was used to generate the SPEI drought map for the year 1985.

Assessment of Meteorological Drought Using Standardized Precipitation Evapotranspiration Index—Hyderabad Case Study

2021 ◽  
pp. 243-252
Author(s):  
Pallavi Kumari ◽  
Sharath Chandra Vannam ◽  
Rehana Shaik ◽  
M. Inayathulla
Keyword(s):  
Meteorological Drought ◽  
Standardized Precipitation Evapotranspiration Index

scholarly journals Spatiotemporal analysis of meteorological drought variability in the Indian region using standardized precipitation index

2011 ◽  
Vol 19 (2) ◽  
pp. 256-264 ◽  
Author(s):  
M. Naresh Kumar ◽  
C. S. Murthy ◽  
M. V. R. Sesha Sai ◽  
P. S. Roy
Keyword(s):  
Standardized Precipitation Index ◽  
Meteorological Drought ◽  
Spatiotemporal Analysis ◽  
Precipitation Index ◽  
Indian Region ◽  
Drought Variability

Environmental Compliance in River Valley Projects of North East Indian Region

Pleione ◽  
2017 ◽  
Vol 11 (2) ◽  
pp. 455
Author(s):  
V. Saio ◽  
H. Tynsong ◽  
Shahida P. Quazi ◽  
V. P. Upadhyay ◽  
S. K. Aggarwal
Keyword(s):  
River Valley ◽  
Indian Region ◽  
Environmental Compliance ◽  
East Indian ◽  
North East
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