K. S. Rajan
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View article: Citywide mobile air quality monitoring using GPS-enabled low-cost IoT sensors
Citywide mobile air quality monitoring using GPS-enabled low-cost IoT sensors Open
Particulate matter (PM) is a critical air pollutant with severe health implications, yet existing stationary monitoring networks often fail to capture its complete spatial and temporal variability in urban environments. This paper presents…
View article: Water Sensitive Urban Design Practices in Indian Cities: A Critical Review
Water Sensitive Urban Design Practices in Indian Cities: A Critical Review Open
Rapid urbanization and climate change have intensified challenges related to urban water management. Water Sensitive Urban Design (WSUD) represents an innovative approach for managing urban water resources, integrating sustainable water ma…
View article: Comment on egusphere-2024-405
Comment on egusphere-2024-405 Open
Abstract. Atmospheric methane (CH4) is a potent climate change agent responsible for a fraction of global warming. The present study investigated the spatial and temporal variability of atmospheric column-averaged (X) CH4 (XCH4) concentrat…
View article: Emissions of Methane from Coal, Thermal power plants and Wetlands and its implications on Atmospheric Methane across the South Asian Region
Emissions of Methane from Coal, Thermal power plants and Wetlands and its implications on Atmospheric Methane across the South Asian Region Open
Atmospheric methane (CH4) is a potent climate change agent responsible for a fraction of global warming. The present study investigated the spatial and temporal variability of atmospheric column-averaged (X) CH4 (XCH4) concentrations using…
View article: Development of end-to-end low-cost IoT system for densely deployed PM monitoring network: an Indian case study
Development of end-to-end low-cost IoT system for densely deployed PM monitoring network: an Indian case study Open
Particulate matter (PM) is considered the primary contributor to air pollution and has severe implications for general health. PM concentration has high spatial variability and thus needs to be monitored locally. Traditional PM monitoring …
View article: Behavioural Analysis of Water Consumption Using IoT-Based Smart Retrofit Meter
Behavioural Analysis of Water Consumption Using IoT-Based Smart Retrofit Meter Open
This paper presents the analysis of water supply behavior within an educational campus, serving as a use-case to demonstrate the broader applicability of an innovative IoT-based framework integrated with deep learning techniques. By retrof…
View article: MODELLING EVACUATION STRATEGIES UNDER DYNAMIC CONDITIONS DUE TO OBSTACLE LOCATIONS BASED ON A SEMANTIC 3D BUILDING MODELS
MODELLING EVACUATION STRATEGIES UNDER DYNAMIC CONDITIONS DUE TO OBSTACLE LOCATIONS BASED ON A SEMANTIC 3D BUILDING MODELS Open
The evacuation path from inside a building to safe point outside becomes highly unpredictable due to changes in the local geometry or presence of obstacles during a disaster like a fire. During emergencies, Evacuees need appropriate inform…
View article: Implications of Emission Sources and Biosphere Exchange on Temporal Variations of CO<sub>2</sub> and δ<sup>13</sup>C Using Continuous Atmospheric Measurements at Shadnagar (India)
Implications of Emission Sources and Biosphere Exchange on Temporal Variations of CO<sub>2</sub> and δ<sup>13</sup>C Using Continuous Atmospheric Measurements at Shadnagar (India) Open
Diurnal variation of atmospheric CO 2 and its driving factors are studied using high‐precision in situ mixing ratio measurements and stable carbon isotopic CO 2 (δ 13 C‐CO 2 ) for the first time over Shadnagar, a suburban site in India, fr…
View article: The Success of the Montreal Protocol for Climate Mitigation: Antarctica Ozone hole Recovery Perspective
The Success of the Montreal Protocol for Climate Mitigation: Antarctica Ozone hole Recovery Perspective Open
The monitoring of the ozone in the Earth’s atmosphere began in the 1970s due to its absorbing nature of radiation from the Sun, which is harmful to humans and prevents it from reaching the surface of the Earth. However, considerable global…
View article: The Success of the Montreal Protocol for Climate Mitigation: Antarctica Ozone hole Recovery Perspective
The Success of the Montreal Protocol for Climate Mitigation: Antarctica Ozone hole Recovery Perspective Open
The monitoring of the ozone in the Earth’s atmosphere began in the 1970s due to its absorbing nature of radiation from the Sun, which is harmful to humans and prevents it from reaching the surface of the Earth. However, considerable global…
View article: Data_Discriptor_worksheet_CO2.xlsxSpatio-temporal Atmospheric In-situ CO2 data over the Indian Sites-Data Perspective
Data_Discriptor_worksheet_CO2.xlsxSpatio-temporal Atmospheric In-situ CO2 data over the Indian Sites-Data Perspective Open
atmospheric CO2 data over the Indian sites.
View article: Development of End-to-End Low-Cost IoT System for Densely Deployed PM Monitoring Network: An Indian Case Study
Development of End-to-End Low-Cost IoT System for Densely Deployed PM Monitoring Network: An Indian Case Study Open
Particulate matter (PM) is considered the primary contributor to air pollution and has severe implications for general health. PM concentration has high spatial variability and thus needs to be monitored locally. Traditional PM monitoring …
View article: Implications of emission sources and biosphere exchange on temporal variations of CO2 and δ13C using continuous atmospheric measurements at Shadnagar (India)
Implications of emission sources and biosphere exchange on temporal variations of CO2 and δ13C using continuous atmospheric measurements at Shadnagar (India) Open
The data contains daily atmospheric CO2 mixing ratios and 13C of CO2 over the Shadnagar region of India during November 2018 to October 2019.
View article: Implications of emission sources and biosphere exchange on temporal variations of CO2 and δ13C using continuous atmospheric measurements at Shadnagar (India)
Implications of emission sources and biosphere exchange on temporal variations of CO2 and δ13C using continuous atmospheric measurements at Shadnagar (India) Open
The data contains daily atmospheric CO2 mixing ratios and 13C of CO2 over the Shadnagar region of India during November 2018 to October 2019.
View article: Ground-based Remote Sensing of Total Columnar CO2, CH4, and CO using EM27/SUN FTIR spectrometer at a suburban location in India and validation of Sentinel-5p/TROPOMI
Ground-based Remote Sensing of Total Columnar CO2, CH4, and CO using EM27/SUN FTIR spectrometer at a suburban location in India and validation of Sentinel-5p/TROPOMI Open
Greenhouse gasses (GHGs) play an important role in controlling local air pollution as well as climate change. In the present study, we retrieved column-averaged dry-air (X) mole fractions of carbon dioxide (CO2), methane (CH4), and carbon …
View article: Ground-based Remote Sensing of Total Columnar CO2, CH4, and CO using EM27/SUN FTIR spectrometer at a suburban location in India and validation of Sentinel-5p/TROPOMI
Ground-based Remote Sensing of Total Columnar CO2, CH4, and CO using EM27/SUN FTIR spectrometer at a suburban location in India and validation of Sentinel-5p/TROPOMI Open
Greenhouse gasses (GHGs) play an important role in controlling local air pollution as well as climate change. In the present study, we retrieved column-averaged dry-air (X) mole fractions of carbon dioxide (CO2), methane (CH4), and carbon …
View article: AFN: Attentional Feedback Network based 3D Terrain Super-Resolution
AFN: Attentional Feedback Network based 3D Terrain Super-Resolution Open
Terrain, representing features of an earth surface, plays a crucial role in many applications such as simulations, route planning, analysis of surface dynamics, computer graphics-based games, entertainment, films, to name a few. With recen…
View article: SHIFTING CULTIVATION PRACTICES IN BARAK VALLEY, INDIA – POLICY SCENARIOS FROM A SPATIALLY EXPLICIT LAND USE MODEL
SHIFTING CULTIVATION PRACTICES IN BARAK VALLEY, INDIA – POLICY SCENARIOS FROM A SPATIALLY EXPLICIT LAND USE MODEL Open
Barak valley is a region in north east part of India where the practice of shifting cultivation is quite prevalent. Population growth coupled with the geographic isolation of the area have led to an increased pressure on land and a consequ…
View article: DAV – DATA ANALYTICS AND VISUALIZATION SYSTEM FOR ROADS
DAV – DATA ANALYTICS AND VISUALIZATION SYSTEM FOR ROADS Open
This paper proposes a system for monitoring of condition and surface of roads in developing countries like India. This system will be used by government agencies to monitor municipal activities like road laying and planning. The system uti…
View article: Feedback Neural Network based Super-resolution of DEM for generating high fidelity features
Feedback Neural Network based Super-resolution of DEM for generating high fidelity features Open
High resolution Digital Elevation Models(DEMs) are an important requirement for many applications like modelling water flow, landslides, avalanches etc. Yet publicly available DEMs have low resolution for most parts of the world. Despite t…
View article: Improving Spatio-Temporal Understanding of Particulate Matter using Low-Cost IoT Sensors
Improving Spatio-Temporal Understanding of Particulate Matter using Low-Cost IoT Sensors Open
Current air pollution monitoring systems are bulky and expensive resulting in a very sparse deployment. In addition, the data from these monitoring stations may not be easily accessible. This paper focuses on studying the dense deployment …
View article: Development of an Indoor Space Semantic Model and Its Implementation as an IndoorGML Extension
Development of an Indoor Space Semantic Model and Its Implementation as an IndoorGML Extension Open
Geospatial data capture and handling of indoor spaces is increasing over the years and has had a varied history of data sources ranging from architectural and building drawings to indoor data acquisition approaches. While these have been m…
View article: EXCESSIVE FERTILIZER USAGE DRIVES AGRICULTURE GROWTH BUT DEPLETES WATER QUALITY
EXCESSIVE FERTILIZER USAGE DRIVES AGRICULTURE GROWTH BUT DEPLETES WATER QUALITY Open
By 2050 most parts of India will be water stressed zones as most of the water resources are under heavy stress due to increasing nutrient contamination in their waters. In this scenario, studying the changes occurring in the freshwater nut…
View article: TOWARDS GENERATING SEMANTICALLY-RICH INDOORGML DATA FROM ARCHITECTURAL PLANS
TOWARDS GENERATING SEMANTICALLY-RICH INDOORGML DATA FROM ARCHITECTURAL PLANS Open
Recent years has seen an increase in the work done on indoor data mapping and modeling. The standard data models provide different ways to store and access the indoor data but the way it is done is specific to the domain in which they are …
View article: IMPROVING PATH QUERY PERFORMANCE IN PGROUTING USING A MAP GENERALIZATION APPROACH
IMPROVING PATH QUERY PERFORMANCE IN PGROUTING USING A MAP GENERALIZATION APPROACH Open
pgRouting library provides functions to compute shortest path between any two points of a road network which is of great demand and also a topic of interest in the field of GIS, graph theory and transportation. To compute path in a road ne…
View article: LSIVIEWER 2.0 – A CLIENT-ORIENTED ONLINE VISUALIZATION TOOL FORGEOSPATIAL VECTOR DATA
LSIVIEWER 2.0 – A CLIENT-ORIENTED ONLINE VISUALIZATION TOOL FORGEOSPATIAL VECTOR DATA Open
Geospatial data visualization systems have been predominantly through applications that are installed and run in a desktop environment. Over the last decade, with the advent of web technologies and its adoption by Geospatial community, the…