Netrananda Sahu

• Doctor of Engineering
• Professor (Assistant) at University of Delhi

Rapid growing population and increasing consumption of food are placing unprecedented demand for agriculture. Today, more than 1.4 billion people in India are becoming a challenge for agricultural land to feed them. The present study outlines how the trend in area, production, and productivity existed in the past and what they will be if continued...

In recent decades, the effects of climate change and climate variability have attracted significant global attention due to their growing impact on extreme weather and climate events [...]

It is important to identify the suitable zone for urban built-up area development in highly populous countries in the global south. Therefore, this study was conducted in a medium class city in eastern India based on some significant influential factors and their sub-criteria. Different geophysical data, official data, and open street data were use...

Globally, there has been a lot of focus on climate variability, especially variability in annual precipitation and temperatures. Depending on the area, different climate variables have different degrees of variation. Therefore, analyzing the temporal and spatial changes or dynamics of meteorological or climatic variables in light of climate change...

The extensive transformation of natural landscapes into man-made landscapes places constraints on long-term urban sustainability. Therefore, it is important to analyse the issues of urban resilience relating to demand and supply for urban-related services in terms of human adaptation in a class-I town like Midnapore municipality in West Bengal’s Pa...

Due to climate change the drop in spring-water discharge poses a serious issue in the Himalayan region, especially in the higher section of Himachal Pradesh. This study used different climatic factors along with long-term rainfall data to understand the decreasing trend in spring-water discharge. It was determined which climate parameter was most c...

Urban heat exposure (UHE) is a widespread micro-climatic event for large metropolitan and rapidly growing cities globally. Therefore, this study mainly focuses on urbanization impacts on the seasonal variation of the UHE in Delhi-National Capital Region (NCR) and its peri-urban environment during 2005–2020 and its reduction strategies based on Land...

Thamnocalamus spathiflorus is a shrubby woody bamboo invigorating at the alpine and sub-alpine region of the northwestern Himalayas. The present investigation was conducted to map the potential distribution of Th. spathiflorus in the western Himalayas for current and future climate scenario using Ecological Niche Modelling (ENM). In total, 125 geo-...

The study of monsoon variability in India has been the focus of scientific research for many decades due to its impact on agricultural production and the national economy. This study aims to understand the research trend over time and analyses those issues using bibliometric analysis with systematic literature review and meta analysis. A bibliometr...

NCT Delhi, the heart of India, remains vulnerable to urban flooding from July to October, when southwest monsoon is active over its area of 1483 km². To address the paucity of a comprehensive susceptibility map, this study employs urban flood modeling to quantify the spatial sensitivity of NCT Delhi to water logging. Fifteen flood related variables...

Progressive environmental and climatic changes have significantly increased hydrometeorological threats all over the globe. Floods have gained global significance owing to their devastating impact and their capacity to cause economic and human loss. Accurate flood forecasting and the identification of high-risk areas are essential for preventing fl...

Forest fires have significant impacts on economies, cultures, and ecologies worldwide. Developing predictive models for forest fire probability is crucial for preventing and managing these fires. Such models contribute to reducing losses and the frequency of forest fires by informing prevention efforts effectively. The objective of this study was t...

Monsoon onset in India has always been a topic of interest for the research fraternity and various stakeholders. This study aimed to determine the monsoon onset date at the grid point scale, to obtain the trend of monsoon onset, and to unravel the spatial distribution of monsoon onset during the period 1901–2019 (especially in different climate mod...

The last five decades (since 1980) have witnessed the introduction of exotic trees as a popular practice in India to fulfill the demand of forest-based products for utilization in afforestation programmes. This study examines the distribution and habitat suitability of exotic Grevillea robusta trees in the northwestern Himalayas (state: Uttarakhand...

Background: The impact of climate change on human health in rural and tribal communities has drawn the attention of scientists. One of the most crucial climatic factors in determining the morbidity and mortality linked to vector-borne diseases is rainfall. Socioeconomically, poor communities are anticipated to experience its effects and harshness w...

This study aimed to identify suitable sites for tea cultivation using both random forest and logistic regression models. The study utilized 2770 sample points to map the tea plantation suitability zones (TPSZs), considering 12 important conditioning factors, such as temperature, rainfall, elevation, slope, soil depth, soil drainability, soil electr...

Citation: Sahu, N.; Das, P.; Saini, A.; Varun, A.; Mallick, S.K.; Nayan, R.; Aggarwal, S.P.; Pani, B.; Kesharwani, R.; Kumar, A. Analysis of Tea Plantation Suitability Using Geostatistical and Machine Learning

In Odisha, Kalahandi is one of the most exposed and vulnerable districts to malaria incidences due to its poor socioeconomic condition and extreme climate. The study aimed to explore the temporal characteristics of malaria incidences in Kalahandi and to identify its relationship with rainfall for the period from 2011 to 2018. Out of the total blo...

Gaddi’s are a tribal community, practicing transhumance in the state of Himachal Pradesh in the Indian Himalayas. Transhumance is the seasonal movement (vertical movement) of people with their livestock between fixed higher pasture lands in summer and lower valleys in winter. Due to climate change, the livelihood security of the indigenous communit...

In order to achieve the socio-environmental sustainability, it is important to identify the suitable zone for urban built-up area development in highly populous countries in the global south. Therefore, this study has been conducted in a medium class city in eastern India based on some significant influential factors and their sub-criteria. Differe...

Plastic volume in the ocean is increasing rapidly, affecting wildlife, economies, and potentially human health. Recent model projections suggest that somewhere between four and twelve million tons of plastic flow into the world’s oceans yearly, with much of this waste coming from urban centres (Jambeck et al. 2015). However, to date, very little da...

Regional variations of monsoon onset dates across India were analyzed for 67 years (1951–2017) under different modes of climate variations, i.e., El Niño, La Niña, and the Indian Ocean Dipole (IOD), along with flood and drought years using the objective method and statistical techniques. Monsoon onset analysis revealed that the northern, northeaste...

Planning for a sustainable future involves understanding the past and present problems associated with urban centers. Rapid urbanization has caused significant adverse impacts on the environment and natural resources. In cities, one such impact is the unsettling urban growth, resulting in the urban heat island (UHI) effect, which causes considerabl...

This study examines land use changes and evaluates the past and projected forest carbon sequestration and its valuation in Viti Levu Island, Fiji, through a combination of remote sensing with a geospatial-based modeling approach. Land use classification was performed using Landsat 7 and Landsat 8 imageries of the years 2000 and 2020; then, cellular...

Background: Kalahandi district of Odisha is a well-known place on the world map for its poverty, starvation, diseases, and deaths. The population of the district is dominated by the tribals and marginalised schedule caste population. Combing all these factors, this district has become one of the most sensitive and vulnerable districts of the countr...

A common phenomenon associated with alluvial rivers is their meander evolution, eventually forming cutoffs. Point bar deposits and ox-bow lakes are the products of lateral bend migration and meander cutoff. The present study focuses on identifying the meanders of River Manu and their cutoffs. Moreover, this study compares the temporal evolution and...

A common phenomenon associated with alluvial rivers is their meander evolution, eventually forming cutoffs. Point bar deposits and ox-bow lakes are the products of lateral bend migration and meander cutoff. The present study focuses on identifying the meanders of River Manu and their cutoffs. Moreover, this study compares the temporal evolution and...

A common phenomenon associated with alluvial rivers is their meander evolution, eventually forming cutoffs. Point bar deposits and ox-bow lakes are the products of lateral bend migration and meander cutoff. The present study focuses on identifying the meanders of River Manu and their cutoffs. Moreover, this study compares the temporal evolution and...

Background: Outbreaks of waterborne diseases caused by the contamination of water in the rural and tribal regions have become an area of prime concern in the research arena. The impact and intensity of waterborne diseases are expected to increase in these socioeconomic backward regions. Objective: The purpose of the study is to calculate the wat...

Globally, estimating crop acreage and yield is one of the most critical issues that policy and decision makers need for assessing annual crop productivity and food supply. Nowadays, satellite remote sensing and geographic information system (GIS) can enable the estimation of these crop production parameters over large geographic areas. The present...

Landslides are critical natural disasters characterized by a downward movement of land masses. As one of the deadliest types of disasters worldwide, they have a high death toll every year and cause a large amount of economic damage. The transition between urban and rural areas is characterized by highways, which, in rugged Himalayan terrain, have t...

The climate change scenarios, especially global warming, have raised significant concerns, and the Himalayan regions such as Uttarakhand are highly vulnerable to such climatic shifts. Considering 10 Coordinated Regional Climate Downscaling Experiments in South Asia (CORDEX-SA), experiments with 3 regional climate models (RCMs), driven by 13 global...

Citation: Tyagi, N.; Jayal, T.; Singh, M.; Mandwal, V.; Saini, A.; Nirbhav; Sahu, N.; Nayak, S. Evaluation of Observed and Future Climate Change Projection for Uttarakhand, India, Using CORDEX-SA. Atmosphere 2022, 13, 947. https://

Water quality degradation and metal contamination in groundwater are serious concerns in an arid region with scanty water resources. This study aimed at evaluating the source of uranium (U) and potential health risk assessment in groundwater of the arid region of western Rajasthan and northern Gujarat. The probable source of vanadium (V) and fluori...

In this paper, the quality of a source of drinking water is assessed by measuring eight water quality (WQ) parameters using 710 samples collected from a water-stressed region of India, Jodhpur Rajasthan. The entire sample was divided into ten groups representing different geographic locations. Using American Public Health Association (APHA) specifi...

Background: Diarrhea and typhoid, ancient water-borne diseases which are highly connected to rainfall are serious public health challenges in the blocks of Kalahandi district of Odisha, India. Objectives: Corroboration of rainfall and waterborne diseases are available in abundance; therefore, the objective of this article is to calculate the cli...

Based on the Gini-coefficients, this study has presented an analysis of the impacts of anthropogenic forcing on the temporal inequality (i.e., increase in unevenness or disparity) of precipitation amounts (PRCPTOT), intensity (SDII), and extremes (R95p and RX5day) at national and regional scales (eight regions) in China. A positive anthropogenic in...

In September 2014, Kashmir witnessed a catastrophic flood resulting in a significant loss of lives and property. Such massive losses could have been avoided if any structural support such as dams were constructed in the Jhelum basin, which has a history of devastating floods. The GIS-based multicriteria analysis (MCA) model provided three suitabili...

Inhabitants of low-lying islands face increased threats due to climate change as a result of their higher exposure and lesser adaptive capacity. Sagar Island, the largest inhabited estuarine island of Sundarbans, is experiencing severe coastal erosion, frequent cyclones, flooding, storm surges, and breaching of embankments, resulting in land, livel...

India observes the summer monsoon in June–July–August–September (JJAS) season, and the livelihood security of a huge population depends on it. The impact of the monsoon onset timing, length of monsoon season, rainfall amount, and related extreme events is huge on the Indian economy. Therefore, understanding the inherent intricacies needed a detaile...

Population increase has placed ever-increasing demands on the available groundwater (GW) resources, particularly for intensive agricultural activities. In India, groundwater is the backbone of agriculture and drinking purposes. In the present study, an assessment of groundwater reserves was carried out in the Udaipur district, Aravalli range, India...

Kosi River is one of the major left bank tributaries of the River Ganga and is rising at an altitude of over 7500 m above MSL (mean sea level) in the Himalayan kingdom of Nepal and Tibet. Ancient Sanskrit name for Kosi pronounced as Kaushiki in Vedas is one of the most sacred ancient rivers of India. In this paper, we have taken two years in 1998,...

This study performed a land use and land cover (LULC) change analysis over Southern India for the period 1981–2006 from the normalized difference vegetation index (NDVI) images of AVHRR data and applied the “observation minus reanalysis” (OMR) method to investigate the impact of the LULC change on the temperature of the region. The LULC change anal...

The Eastern Indian Himalayan region (EIHR) is biodiversity-rich and is ecologically sensitive. The region is under tremendous pressure due to a variety of challenges such as population, shifting cultivation, and climate change leading to impact the vegetation. Therefore, the present study focuses on the evaluation of spatio-temporal dynamics of veg...

Examining the influence of land use/land cover transformation on meteorological variables has become imperative for maintaining long-term climate sustainability. Rapid growth and haphazard expansion have caused the conversion of prime agricultural land into a built-up area. This study used multitemporal Landsat data to analyze land use/land cover (...

Background: For several decades, the Kalahandi district of Odisha, India has been designated as a place of poverty, disease, starvation and death. The occurrence and resurgence of water-borne diseases in Kalahandi is a major cause of morbidity and mortality in the district. Material and Method: Data on incidences of Acute Diarrhoeal Disease (ADD) a...

The coronavirus (COVID-19) outbreak has created havoc all across the States and Union Territories (UTs) of India since its beginning on 30th January 2020. As of 1st January 2021, India has recorded 10,305,788 cases and 149,218 deaths from this deadly pandemic. It has been observed through the data; across states and UTs, the trend and pattern of th...

The extensive work on the increasing burden of aerosols and resultant climate implications shows a matter of great concern. In this study, we investigate the aerosol optical depth (AOD) variations in the Indian Himalayan Region (IHR) between its plains and alpine regions and the corresponding consequences on the energy balance on the Himalayan glac...

Forests are an important natural resource and are instrumental in sustaining environmental sustainability. Burning biomass in forests results in greenhouse gas emissions, many of which are long-lived. Precise and consistent broad-scale monitoring of fire intensity is a valuable tool for analyzing climate and ecological changes related to fire. Remo...

Indian monsoon rainfall has a very strong connection with the Indian economy. Any variation in trend or pattern of Indian summer monsoon rainfall will have serious implications on agronomy, water resources and various associated sectors of the economy in India. In this study, an in-depth investigation of the monsoon rainfall trend is analyzed for 1...

The fragile ecosystem of the desiccated Amu Darya River Basin has experienced profound local hydrological havoc. These changes are associated with temperature, evapotranspiration, precipitation, and human-induced effects. However, previous long-term analyses have inadequately addressed these problems at the basin scale. Therefore, this study applie...

The tropical cyclones are very destructive during landfall, generating high wind speeds, heavy intensive rainfall, and severe storm surges with huge coastal inundations that have massive socioeconomic and ecological catastrophic effects on human beings and the economic well-being. The sizable ecological effects of cyclonic storms cannot be ignored...

It has become evident that the global climate is changing rapidly over the past few decades. The variation and change in the global climatic factors have a notable impact on the local climate of a region. The changing climate is widely regarded as one of the most serious global health threats of the 21 st century. Among various kinds of diseases, t...

Indiscriminate deforestation and shifting cultivation have accelerated soil erosion requiring the need for immediate conservation measures in the eastern Indian Himalayan region (EIHR). The present study attempts to address the problem by evaluating the land suitability of the EIHR for agroforestry through multi-criteria evaluation modelling throug...

Widespread urban expansion around the world, combined with rapid demographic and climatic changes, has resulted in serious pollution issues in many coastal water bodies. To help formulate coastal management strategies to mitigate the impacts of these extreme changes (e.g., local land-use or climate change adaptation policies), research methodologie...

Abstract Climatic factors and their related impact on human health in the rural and tribal regions have become an area of prime concern in the research community. Among the climatic factors, rainfall plays an important role in deciding the morbidity and mortality related to vector-borne and water-borne diseases. Its ramification and intensity on hu...

Corroboration of El Niño and Southern Oscillation (ENSO) events on the climatic variability in the Indian subcontinent is mentioned in various studies. In the Indian context, if we observe the rising number of dengue cases, it could be treated as a major cause of health concern for the government of this country. Nowadays, an increasing number of d...

Climate change is affecting human health worldwide. In particular, changes to local and global climate parameters influence vector and water-borne diseases like malaria, dengue fever, and tick-borne encephalitis. The Republic of Sakha in northern Russia is no exception. Long-term trends of increasing annual temperatures and thawing permafrost have...

Climate change and urbanization are jointly impacting on the open surface water area of the Irtysh River in the Arctic Circle. This will affect the economic development and ecology of the countries in the Irtysh River basin and the hydrological cycle of the Arctic Circle. However, the long-term changes of open surface water bodies in the Irtysh Riv...

Remote sensing technology has seen a massive rise in popularity over the last two decades, becoming an integral part of our lives. Space-based satellite technologies facilitated access to the inaccessible terrains, helped humanitarian teams, support complex emergencies, and contributed to monitoring and verifying conflict zones. The scoping phase o...

Considering the well-documented impacts of land-use change on water resources and the rapid land-use conversions occurring throughout Africa, in this study, we conducted a spatiotemporal analysis of surface water quality and its relation with the land use and land cover (LULC) pattern in Mokopane, Limpopo province of South Africa. Various physico-c...

The shifting of monsoon onset has a lot of consequences for the environment. India is a vast country with mostly hot tropical climate expect the Himalayan region of the country. In the present study, we analysed the shifting of monsoon onset from 1960-2019. The trend of the onset of monsoon was observed by considering the change point existence wit...

In this paper, the rainfall trend of the West Coast Plain and Hill Agro-Climatic Region is analyzed for 117 years (1901–2017). This region is a globally recognized biodiversity hotspot and known for one of the highest rainfall receiving regions in India. Rainfall grid dataset is used for the analysis of rainfall trends on monthly, seasonal, and dec...

The Himalayas have become synonymous with the hydropower developments for larger electricity demands of India’s energy sector. In the Himachal Himalayas though, there are only three large storage dams with more than 1000 megawatts (hereafter MW) capacity that have very serious environmental issues. However, hundreds of small runoff-river hydropower...

The novel coronavirus pandemic (COVID-19) has brought countries around the world to a standstill in the early part of 2020. Several nations and territories around the world insisted their population stay indoors for practicing social distance in order to avoid infecting the disease. Consequently, industrial activities, businesses, and all modes of...

The impact of Indo-Pacific climate variability in the South Asian region is very pronounced and their impact on agriculture is very important for the Indian subcontinent. In this study, rice productivity, climatic factors (Rainfall, Temperature and Soil Moisture) and associated major Indo-Pacific climate indices in Bihar were investigated. Bihar is...

Apple cultivation is one of the most important sources of livelihood in Indian side of the Himalayas. The present study focuses on the apple orchards of Himachal Pradesh, a state within the Himalayan Mountains, a major apple producers of India. In the study, it is found that the optimum apple growing conditions in the region have been consistently...

The potential impact of climate variability on the hydrological regime in the Mahanadi river basin is of great importance for sustainable water resources management. The impact of climate variability on streamflow is analyzed in this study. The impact of climate variability modes on extreme events of Mahanadi basin during June, July, and August (JJ...

Spatial urban growth and its impact on land surface temperature (LST) is a high priority environmental issue for urban policy. Although the impact of horizontal spatial growth of cities on LST is well studied, the impact of the vertical spatial distribution of buildings on LST is under-investigated. This is particularly true for cities in subtropic...

Most tropical regions in the world are vulnerable to climate variability, given their dependence on rain-fed agricultural production and limited adaptive capacity owing to socio-economic conditions. The Kalahandi, Bolangir, and Koraput districts of the south-western part of Odisha province of India experience an extreme sub-humid tropical climate....