Water level status of Indian reservoirs: A synoptic view from altimeter observations

Thakur, Praveen K.; Garg, Vaibhav; Kalura, Praveen; Agrawal, Bhuvnesh; Sharma, Vishal; Mohapatra, Manaruchi; Kalia, M. M.; Aggarwal, S. P.; Calmant, Stéphane; Ghosh, Surajit; Dhote, Pankaj R.; Sharma, Rashmi; Chauhan, Prakash

doi:10.1016/j.asr.2020.06.015

Cited by 23 publications

(16 citation statements)

References 59 publications

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“…Moreover, repeated observations allow evaluation of change in water storage in reservoirs and overcome the limitation of the spare in-situ network of gauge stations. The water levels from altimetry can also be used to calibrate and validate hydrological and hydrodynamic models (Thakur et al 2021). Table 1.8 presents a list of some radar altimetry data products.…”

Section: Methodology Development In Water Resources Managementmentioning

confidence: 99%

Overview of Geospatial Technologies for Land and Water Resources Management

Pandey

Singh

Chowdary

et al. 2021

Geospatial Technologies for Land and Water Resources Management

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Land and water resources management are essential for the future sustainability of the environment. The studies on land and water resources require basic geo-referenced data, such as land use-land cover (LULC), soil maps, and digital elevation models (DEMs) for capturing the spatio-temporal variations of thematic layers. These data can be easily obtained from remote sensing images and limited ground truth. Hydro-meteorological data, such as precipitation, air, land surface temperature, solar radiation, evapotranspiration, soil moisture, river and lakes water levels, river discharge, and terrestrial water storage, can also be derived from remote sensing as well as from point-based ground instruments. Then, studies can be carried out at various spatio-temporal scales.

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Section: Methodology Development In Water Resources Managementmentioning

confidence: 99%

Overview of Geospatial Technologies for Land and Water Resources Management

Pandey

Singh

Chowdary

et al. 2021

Geospatial Technologies for Land and Water Resources Management

View full text Add to dashboard Cite

show abstract

“…The combined use of remote sensing images, GNSS data, and spatial and non-spatial data in a GIS environment is commonly known as geospatial technology or techniques (Thakur et al 2012). (Thakur et al 2021), interception, and change in terrestrial water storage ( TWS), which can be utilized for hydrological studies (Thakur et al 2017;Montanari and Sideris 2018). Various national space agencies, hydrometeorological organizations, private space, and weather companies provide these geospatial datasets used extensively for hydrological modeling (Thakur et al 2017;Sheffield et al 2018;Jiang and Wang 2019), covering both data-rich and data-poor parts of the world.…”

Section: Geospatial Data and Technological Support For Hydrological Studiesmentioning

confidence: 99%

Role of Geospatial Technology in Hydrological and Hydrodynamic Modeling-With Focus on Floods Studies

Thakur

Patel

Garg

et al. 2021

Geospatial Technologies for Land and Water Resources Management

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Assessment of surface water with higher accuracy is very critical in the present changing environment. Such assessment requires understanding of each and every hydrological process involved in hydrological cycle. The land characteristics along with climate variables make it a daunting task. With the advent of geospatial technology, both land surface and climate parameters may be studied with higher accuracy. Some of the hydrological parameters such as precipitation, soil moisture, evapotranspiration, and water level can now directly be retrieved using remote sensing data. However, other hydrological components such as rainfall-runoff, snowmelt-runoff, peak discharge, or flood hydrograph need modeling approach. Most of the surface and climate inputs required for hydrological and hydrodynamic (H&H) modeling nowadays can be quantified using the geospatial datasets. It makes

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“…A significant limitation of gauge-based observations is a discontinuity in the recorded observations, which often renders the data unproductive (Thakur et al 2021). The satellite-based precipitation products (SPPs) address the concerns of sparse and missing data.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of SM2RAIN-ASCAT Rainfall Product Over an Agricultural Watershed of India

Dayal

Singh

Pandey

et al. 2021

Geospatial Technologies for Land and Water Resources Management

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Precipitation is an essential climatic variable for any hydrological study. For hydrological studies, obtaining the observed precipitation, whether real-time or historical, has been quite challenging. In this regard, satellite-based precipitation estimates play an essential role in enhancing the present hydrologic prediction capability. They are available at a high spatiotemporal resolution with global coverage. In the present study, a satellite soil moisture (retrieved from scatterometer data)based rainfall product (SM2RAIN-ASCAT) was evaluated for its performance to the gauge-based India Meteorological Department (IMD) gridded dataset over the Betwa river basin. The evaluation of satellite-based daily rainfall was carried out based on qualitative (based on contingency table) and quantitative indicators for 2007 to 2019. In general, the SM2RAIN-ASCAT rainfall product is excellent in detecting the daily rainfall events over the Betwa basin, although some of the events are falsely detected. A fair to the good agreement has been observed between satellite rainfall against IMD rainfall product (d = 0.51 to 0.72). The mean absolute error (MAE) in satellite rainfall was found to be in the range of 2.05-3.63 mm/day. The SM2RAIN-ASCAT rainfall product is good for low rainfall events. However, high rainfall events are always underestimated. Thus, the analysis indicates that the SM2RAIN-ASCAT rainfall product can be utilized in hydrological studies of ungauged regions.

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Water level status of Indian reservoirs: A synoptic view from altimeter observations

Cited by 23 publications

References 59 publications

Overview of Geospatial Technologies for Land and Water Resources Management

Overview of Geospatial Technologies for Land and Water Resources Management

Role of Geospatial Technology in Hydrological and Hydrodynamic Modeling-With Focus on Floods Studies

Performance Evaluation of SM2RAIN-ASCAT Rainfall Product Over an Agricultural Watershed of India

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