Shanti Shwarup Mahto

Shanti Shwarup Mahto
Verified
Shanti Shwarup verified their affiliation via an institutional email.
Verified
Shanti Shwarup verified their affiliation via an institutional email.
National University of Singapore | NUS · Department of Civil & Environmental Engineering

PhD
Flash drought monitoring, Remote Sensing, Hydrometeorological hazards, Hydrological modeling, Reservoirs, Climate Change

About

27
Publications
17,860
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
712
Citations
Introduction
My current research objective is to understand the mechanism and drivers of flash drought (an event of rapid drought development) and to look into its various effects over the Indian region. My research work also includes the study of coupled land-vegetation-atmospheric interaction for a better understanding of the regional characteristics of flash drought under the warming climate.
Additional affiliations
July 2018 - present
Indian Institute of Technology Gandhinagar
Position
  • PhD Student
Education
July 2013 - May 2018
Central University of Jharkhand
Field of study
  • Geoinformatics
May 2011 - May 2012
Kendriya Vidyalaya, Bondamunda, Odisha, India
Field of study
  • Science
May 2009 - May 2010
Kendriya Vidyalaya, Bondamunda, Odisha, India
Field of study
  • Science

Publications

Publications (27)
Article
Full-text available
Flash droughts cause rapid depletion in root-zone soil moisture and severely affect crop health and irrigation water demands. However, their occurrence and impacts in the current and future climate in India remain unknown. Here we use observations and model simulations from the large ensemble of Community Earth System Model to quantify the risk of...
Article
Full-text available
Global reanalysis products are extensively used for hydrologic applications in sparse data regions. European Centre for Medium‐Range Weather Forecasts Re‐Analysis version 5 (ERA‐5), among the new‐era reanalysis products, has been significantly improved for horizontal and vertical resolutions and data assimilation. However, the new‐era reanalysis pr...
Article
Full-text available
Flash droughts intensify rapidly after onset and cause short-term but devastating impacts on agriculture and the ecosystem. However, the drivers and characteristics of flash droughts in India have not been examined. Here we use a well-calibrated and evaluated Variable Infiltration Capacity (VIC) hydrological model to simulate root-zone soil moistur...
Article
Full-text available
Floods in India are recurring natural disasters resulting from extreme precipitation during the summer monsoon season (June–September). The recent flood in North India in July 2023 caused substantial damage to lives, agriculture, and infrastructure. However, what led to the 2023 North India flood and the role of atmospheric and land drivers still n...
Preprint
Full-text available
The recent surge in reservoir construction has increased global surface water storage, with Mainland Southeast Asia (MSEA) being a significant hotspot. Such infrastructural evolution demands updates in water management strategies and hydrological models. However, information on actual reservoir storage is hard to acquire, especially for transbounda...
Article
Full-text available
Climate change affects Indian agriculture, which depends heavily on the spatiotemporal distribution of monsoon rainfall. Despite the nonlinear relationship between crop yield and rainfall, little is known about the optimal rainfall threshold, particularly for monsoon rice. Here, we investigate the responses of rice yield to monsoon rainfall in Indi...
Article
Full-text available
Flash drought affects agricultural activities and water availability. However, the rate of flash drought development and termination and their controlling mechanisms remain mostly unexplored. Using climate reanalysis (ERA5) datasets, we examine the flash drought development and recovery rates in seventeen climate regions across the globe during the...
Article
Full-text available
Land–atmospheric feedback influences the occurrence and severity of flash droughts. However, the observed and projected changes in flash droughts and associated land–atmospheric coupling have not been examined over India. Moreover, the causes of the rapid depletion of soil moisture during flash droughts are not well known. We identify major flash d...
Article
Full-text available
Atmospheric rivers often cause extreme precipitation at landfall, leading to floods. However, the underlying physical mechanism of atmospheric rivers and their linkage with flooding in India remain unrecognized. Here we use reanalysis and observations to diagnose the drivers of atmospheric rivers and unravel their crucial role in extreme precipitat...
Article
Full-text available
Simultaneous occurrence of flash drought in major croplands can pose challenges for global food security. However, drivers of flash drought co-occurrence in the observed and future climate remain unrecognized. Using observations and climate model simulations, we examine the simultaneous occurrence of flash droughts in sixteen major global croplands...
Article
Full-text available
The Pakistan flood of 2022 received a considerable attention. However, the causes and implications of the events have not been examined. Using observations, satellite data, and reanalysis products, we show that the event was caused by multiday extreme rainfall on wet antecedent conditions. The extreme rainfall was associated with the two atmospheri...
Poster
Droughts are considered essential concerns in water resource planning and management. Observed and projected changes in summer monsoon precipitation might influence the drought occurrence in India; however not well known. Using precipitation from ERA5 reanalysis and CMIP6 models, we analyze the drought frequency in Indian secondary cities (Bhopal,...
Article
Full-text available
During the summer monsoon (June–September) season, drought poses challenges for agricultural activities and water availability in India. We develop a framework considering the timing, areal coverage and severity that can be used for the assessment of meteorological droughts as the monsoon season progresses. We estimate the benchmark worst droughts...
Article
Full-text available
Considering the severe impacts of compound dry and hot extremes, we examine the primary drivers of CDHEs during the summer monsoon in India. Using ERA5 reanalysis we show that most of the CDHEs in India occur during the droughts caused by the summer monsoon rainfall deficit. Despite a decline in the frequency of summer monsoon droughts in recent de...
Presentation
In the present study, we have considered the Chambal basin lies in the dryland region. We have analysed the past and present conditions of streams in terms of water surface area and riparian vegetation.
Article
Estimation of the water budget is essential for water resources and environmental management. However, a reliable assessment of the water budget and water yield for the Indian sub-continental river basins has been lacking. We used 0.25° gridded meteorological observations and five hydrological models to construct water budget estimates for the Indi...
Article
Full-text available
India, a leading developing country in the Asian continent, is worldwide famous for its diversified and complex monsoon rainfall system, and the factors associated with it. The peninsular shape in the southern half provides an extra benefit in terms of rainfall. This mainly occurs over the coastal regions due to the passage of tropical disturbances...
Article
Full-text available
Erosion has been as a major issue in Bhagirathi and Alaknanda river basins due to high surface runoff. The river basins are located in the Uttarakhand state of India and have a total basin area of 19,066.5 km². Sediment yield has been estimated and then correlated with the surface runoff using geospatial techniques during the period 2000–2015. Anal...
Article
Artificial recharge plays a prominent role in the sustainable management of groundwater resources. The study has proposed a methodology to viable artificial recharge structure using geographical information system (GIS) and empirical equation techniques for augmenting groundwater resources in the Ranchi urban and rural area of Ranchi District, Jhar...
Article
Full-text available
The study area has chosen along the N-S transect across the Himalaya, Gangetic plains and Chotanagpur plateau. We basically tried to observe the variation in the most important climatic variables i.e. Net Surface Radiation (Rn), Temperature, Rainfall, Evapotranspiration (ET) etc. during 2000-2016. Generally the meteorological parameters shows its v...
Article
Full-text available
Lonar Crater Lake in the Buddana district of Maharastra state, India is the third largest natural salt water lake in the world. It is mysterious due to its unsolved & unique limnology and ecological biodiversity. It occupies the geographical position of 19°58' N & 76°31' E. The crater has a diameter of 1.8 km (rim to rim) with an average depth of 1...
Article
Introduction: Now-a-days to overcome the difficulty of availability of climatic data, especially on a daily time scale, researchers prefer to use satellite data which has its wide applications in many fields viz. meteorology, hydrology, water resources models, climatic studies etc. However, it is essential to verify these data for more consistent w...

Questions

Questions (2)
Question
I require satellite altimeter data for validating my model generated river discharge results.
Question
I have generated daily soil moisture products (raster layers) form my model (Satellite Based Hydrological Model) and now I require the validation of my results. What can be the best ways to perform this?

Network

Cited By