Remote Sensing

Order of the National Green Tribunal regarding pollution caused by Talcher Coalfield under Mahanadi Coalfields Limited, Angul district, Odisha, 06/03/2024

Order of the National Green Tribunal (Eastern Zone Bench, Kolkata) in the matter of Sridhar Samal Vs State of Odisha & Others dated 06/03/2024. The matter related to pollution caused by Talcher Coalfield under Mahanadi Coalfields Limited in the course of its operation. It was said that on a daily …

Remote assessment of extracted volumes and greenhouse gases from tropical timber harvest

Timber harvest from tropical regions generates seven billion dollars annually in exports and is estimated to occur across 20% of the area of remaining tropical forests. This timber harvesting is estimated to account for more than one in eight of all greenhouse gas emissions from tropical forests. Yet there is …

Farm fires alarming post wheat harvest too

Satellite images showing the highest number of stubble-burning cases in the holy city post wheat harvesting has set alarm bells ringing. As per a report of the Punjab Remote Sensing Centre (PRSC), between April 10 and May 22, a total of 11,005 cases of stubble burning were detected in the …

Glacier changes in the Bavarian Alps from 1989/90 to 2006/07

The five glaciers in Bavaria which today cover a total area of less than one square kilometer were frequently monitored by geodetic methods from the mid of the 20th century. In this paper, the record is extended by new surveys in 1999 and 2006. The glaciers show a prolonged surface …

Topographic steering of enhanced ice flow at the bottleneck between east and west Antarctica

Hypothesized drawdown of the East Antarctic Ice Sheet through the “bottleneck” zone between East and West Antarctica would have significant impacts for a large proportion of the Antarctic Ice Sheet. Earth observation satellite orbits and a sparseness of radio echo sounding data have restricted investigations of basal boundary controls on …

Increasing magnitude of hurricane rapid intensification in the central and eastern tropical Atlantic

Rapid intensification (RI) of hurricanes is notoriously difficult to predict and can contribute to severe destruction and loss of life. While past studies examined the frequency of RI occurrence, changes in RI magnitude were not considered. Here we explore changes in RI magnitude over the 30‐year satellite period of 1986–2015. …

A global map of mangrove forest soil carbon at 30 m spatial resolution

With the growing recognition that effective action on climate change will require a combination of emissions reductions and carbon sequestration, protecting, enhancing and restoring natural carbon sinks have become political priorities. Mangrove forests are considered some of the most carbon-dense ecosystems in the world with most of the carbon stored …

The importance of forest structure for carbon fluxes of the Amazon rainforest

Precise descriptions of forest productivity, biomass, and structure are essential for understanding ecosystem responses to climatic and anthropogenic changes. However, relations between these components are complex, in particular for tropical forests. We developed an approach to simulate carbon dynamics in the Amazon rainforest including around 410 billion individual trees within …

Biological responses of Crested and Least auklets to volcanic destruction of nesting habitat in the Aleutian Islands, Alaska

Crested Auklets (Aethia cristatella) and Least Auklets (A. pusilla) are crevice-nesting birds that breed in large mixed colonies at relatively few sites in the Aleutian Island archipelago, Bering Sea, Gulf of Alaska, and Sea of Okhotsk. Many of these colonies are located on active volcanic islands. The eruption of Kasatochi …

Long‐term climate simulations using the IITM Earth System Model (IITM‐ESMv2) with focus on the South Asian monsoon

This study details the capabilities of the IITM Earth System Model version 2 (IITM‐ESMv2), developed at the Indian Institute of Tropical Meteorology, Pune, India, for investigating long‐term climate variability and change with special focus on the South Asian monsoon. Original Source

Net retreat of Antarctic glacier grounding lines

Grounding lines are a key indicator of ice-sheet instability, because changes in their position reflect imbalance with the surround-ing ocean and affect the flow of inland ice. Although the grounding lines of several Antarctic glaciers have retreated rapidly due to ocean-driven melting, records are too scarce to assess the scale …

A study on long term variation in particulate matter and black carbon aerosol optical thickness over Mysuru, India: A satellite data approach

Aerosol Optical Thickness (AOT) is a measure of solar spectral extinction. Long term AOT data analysis gives a picture of air quality for that location. This type of analysis is useful in the study of impact of urbanization on local climate. Aerosols are one of the most important but poorly …

Quantifying the influence of agricultural fires in northwest India on urban air pollution in Delhi, India

Since at least the 1980s, many farmers in northwest India have switched to mechanized combine harvesting to boost efficiency. This harvesting technique leaves abundant crop residue on the fields, which farmers typically burn to prepare their fields for subsequent planting. A key question is to what extent the large quantity …

Groundwater depletion in the West Liaohe River Basin, China and its implications revealed by GRACE and in situ measurements

The West Liaohe River Basin (WLRB) is one of the most sensitive areas to climate change in China and an important grain production base in the Inner Mongolia Autonomous Region of China. Groundwater depletion in this region is becoming a critical issue. Here, we used the Gravity Recovery and Climate …

Dark zone of the Greenland Ice Sheet controlled by distributed biologically-active impurities

Albedo—a primary control on surface melt—varies considerably across the Greenland Ice Sheet yet the specific surface types that comprise its dark zone remain unquantified. Here we use UAV imagery to attribute seven distinct surface types to observed albedo along a 25 km transect dissecting the western, ablating sector of the …

Maritime NOx emissions over Chinese seas derived from satellite observations

By applying an inversion algorithm to NOx satellite observations from Ozone Monitoring Instrument, monthly NOx emissions for a 10 year period (2007 to 2016) over Chinese seas are presented for the first time. No effective regulations on NOx emissions have been implemented for ships in China, which is reflected in …

China to build platform for supervising environmental 'red lines'

BEIJING — China is planning to complete the construction of a platform for supervising the "red lines" for the protecting important natural areas by 2020, according to the Ministry of Environmental Protection (MEP). With total investment of 286 million yuan (about $45 million), the construction plan has been approved by …

Climate-change–driven accelerated sea-level rise detected in the altimeter era

Satellite altimetry has shown that global mean sea level has been rising at a rate of ∼3 ± 0.4 mm/y since 1993. Using the altimeter record coupled with careful consideration of interannual and decadal variability as well as potential instrument errors, we show that this rate is accelerating at 0.084 …

Quantification of rotavirus diarrheal risk due to hydroclimatic extremes over south Asia: Prospects of satellite‐based observations in detecting outbreaks

Rotavirus is the most common cause of diarrheal disease among children under 5. Especially in South Asia, rotavirus remains the leading cause of mortality in children due to diarrhea. As climatic extremes and safe water availability significantly influence diarrheal disease impacts in human populations, hydroclimatic information can be a potential …

Remote sensing of motor vehicle exhaust emissions

This report provides a comprehensive overview of vehicle remote sensing, an emissions measurement technique which has been used for more than 25 years to evaluate emissions from passing motor vehicles in real-world driving. Review technical details of the vehicle remote sensing test method, describe the multiple types of emissions analyses …

Using satellite imagery to assess impacts of soil and water conservation measures : evidence from Ethiopia's Tana-Beles Watershed

Although efforts at soil and water conservation are routinely viewed as instrumental in reducing vulnerability to climate change, their impact has rarely been quantified. Combining data on the timing and intensity of soil and water conservation interventions in select Ethiopian watersheds from 2009 to 2016 with a pixel-level panel of …

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