Search Results - "Ramanathan, V."
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Recent climate and air pollution impacts on Indian agriculture
Published in Proceedings of the National Academy of Sciences - PNAS (18-11-2014)“…Significance Rising temperatures because of increased emissions of long-lived greenhouse gases (LLGHGs) have had and will continue to have significant negative…”
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Effects of fossil fuel and total anthropogenic emission removal on public health and climate
Published in Proceedings of the National Academy of Sciences - PNAS (09-04-2019)“…Anthropogenic greenhouse gases and aerosols are associated with climate change and human health risks. We used a global model to estimate the climate and…”
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Observational determination of albedo decrease caused by vanishing Arctic sea ice
Published in Proceedings of the National Academy of Sciences - PNAS (04-03-2014)“…The decline of Arctic sea ice has been documented in over 30 y of satellite passive microwave observations. The resulting darkening of the Arctic and its…”
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Observationally constrained estimates of carbonaceous aerosol radiative forcing
Published in Proceedings of the National Academy of Sciences - PNAS (17-07-2012)“…Carbonaceous aerosols (CA) emitted by fossil and biomass fuels consist of black carbon (BC), a strong absorber of solar radiation, and organic matter (OM). OM…”
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Global and regional climate changes due to black carbon
Published in Nature geoscience (01-04-2008)“…Black carbon in soot is an efficient absorbing agent of solar irradiation that is preferentially emitted in the tropics and can form atmospheric brown clouds…”
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Brown carbon: a significant atmospheric absorber of solar radiation?
Published in Atmospheric chemistry and physics (02-09-2013)“…Several recent observational studies have shown organic carbon aerosols to be a significant source of absorption of solar radiation. The absorbing part of…”
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Nature and Strength of Sulfur-Centered Hydrogen Bond in Methanethiol Aqueous Solutions
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (16-03-2023)“…Methanethiol (M) and water (W) clusters like dimers (M1W1, M2, and W2), trimers (M1W2, M2W1, M3, and W3), and tetramers (M1W3, M2W2, M3W1, M4, and W4) were…”
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Air pollution, greenhouse gases and climate change: Global and regional perspectives
Published in Atmospheric environment (1994) (2009)“…Greenhouse gases (GHGs) warm the surface and the atmosphere with significant implications for rainfall, retreat of glaciers and sea ice, sea level, among other…”
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Trends in surface equivalent potential temperature: A more comprehensive metric for global warming and weather extremes
Published in Proceedings of the National Academy of Sciences - PNAS (08-02-2022)“…Trends in surface air temperature (SAT) are a common metric for global warming. Using observations and observationally driven models, we show that a more…”
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Combined FTIR/Raman spectroscopic studies and ab initio electronic structure calculations of Dithiothreitol
Published in Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy (05-01-2024)“…[Display omitted] •The lowest iso-energetic conformers of DTT were identified as G′TG′1 and G′TT.•Its configurational isomers were observed to have higher…”
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Climate change, the monsoon, and rice yield in India
Published in Climatic change (01-03-2012)“…Recent research indicates that monsoon rainfall became less frequent but more intense in India during the latter half of the Twentieth Century, thus increasing…”
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Solar absorption by elemental and brown carbon determined from spectral observations
Published in Proceedings of the National Academy of Sciences - PNAS (23-10-2012)“…Black carbon (BC) is functionally defined as the absorbing component of atmospheric total carbonaceous aerosols (TC) and is typically dominated by soot-like…”
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Solar radiation budget and radiative forcing due to aerosols and clouds
Published in Journal of Geophysical Research - Atmospheres (27-01-2008)“…This study integrates global data sets for aerosols, cloud physical properties, and shortwave radiation fluxes with a Monte Carlo Aerosol‐Cloud‐Radiation…”
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Climate's Dark Forcings
Published in Science (American Association for the Advancement of Science) (19-04-2013)“…Uncertainties about the properties and amounts of atmospheric black carbon complicate efforts to understand its regional and global effects on climate. The…”
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On avoiding dangerous anthropogenic interference with the climate system: Formidable challenges ahead
Published in Proceedings of the National Academy of Sciences - PNAS (23-09-2008)“…The observed increase in the concentration of greenhouse gases (GHGs) since the preindustrial era has most likely committed the world to a warming of 2.4°C…”
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Raman, His Effect and Its Avatars
Published in Resonance (01-09-2021)“…This article aims to introduce four variants of Raman spectroscopy…”
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Observed high-altitude warming and snow cover retreat over Tibet and the Himalayas enhanced by black carbon aerosols
Published in Atmospheric chemistry and physics (05-02-2016)“…Himalayan mountain glaciers and the snowpack over the Tibetan Plateau provide the headwater of several major rivers in Asia. In situ observations of snow cover…”
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Improving our fundamental understanding of the role of aerosol–cloud interactions in the climate system
Published in Proceedings of the National Academy of Sciences - PNAS (24-05-2016)“…The effect of an increase in atmospheric aerosol concentrations on the distribution and radiative properties of Earth’s clouds is the most uncertain component…”
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Aerosol and monsoon climate interactions over Asia
Published in Reviews of geophysics (1985) (01-12-2016)“…The increasing severity of droughts/floods and worsening air quality from increasing aerosols in Asia monsoon regions are the two gravest threats facing over…”
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Simultaneously Mitigating Near-Term Climate Change and Improving Human Health and Food Security
Published in Science (American Association for the Advancement of Science) (13-01-2012)“…Tropospheric ozone and black carbon (BC) contribute to both degraded air quality and global warming. We considered ~400 emission control measures to reduce…”
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