Publications by authors named "S S Gunthe"

The rise in surface air temperature (SAT) in Venezuela, leading to the loss of all its glaciers, underscores the urgency of understanding human contributions to this phenomenon. This study investigates the impact of anthropogenic climate forcings on SAT across Venezuela, employing observational data, multi-model simulations, and optimal fingerprinting method. Anthropogenic forcings have driven a 0.

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Article Synopsis
  • Mercury is a harmful atmospheric metal from both natural and human sources, and India is a major emitter, committed to reducing emissions as per the Minamata Convention.
  • The study used the GEOS-Chem model to analyze mercury distribution in India from 2013 to 2017, evaluating various emission inventories to ensure accurate simulations, showing a maximum bias of ±20%.
  • Findings indicate that wet deposition is highest in the Western Ghats and Himalayan foothills, with significant contributions from human activities, which, if removed from simulations, could reduce mercury deposition by approximately 21.9% to 33.5%.
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Ammonia (NH) acts as a key precursor of the particulate matter, could reduce visibility, deplete stratospheric ozone, and trigger perturbation in ecosystems. Being an agrarian country with a large livestock population and uncontrolled fertilizer application, India could be accountable as a major stakeholder of global NH emissions. This study developed a comprehensive gridded (0.

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Understanding the complex interactions between atmospheric aerosols and water vapor in subsaturated regions of the atmosphere is crucial for modeling and predicting aerosol-cloud-radiation-climate interactions. However, the microphysical mechanisms of these interactions for ambient aerosols remain poorly understood. For this study, size-resolved samples were collected from a high-altitude, relatively clean site situated in the Western Ghats of India during the monsoon season, in order to study background and preindustrial processes as a baseline for climate functioning within the context of the most polluted region of the world.

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Microplastics (MPs) in the atmosphere can undergo long-range transport from emission regions to pristine terrestrial and oceanic ecosystems. Due to their inherent toxic and hazardous characteristics, MPs pose serious risks to both human well-being and the equilibrium of ecosystem. The present study outlines the comprehensive characterization, spanning physical and chemical attributes of MPs associated with atmospheric aerosols.

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