Search Results - "Kotamarthi, R."

Brown carbon: a significant atmospheric absorber of solar radiation? by Feng, Y, Ramanathan, V, Kotamarthi, V. R

“…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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Projected U.S. drought extremes through the twenty-first century with vapor pressure deficit by Gamelin, Brandi L., Feinstein, Jeremy, Wang, Jiali, Bessac, Julie, Yan, Eugene, Kotamarthi, Veerabhadra R.

“…Global warming is expected to enhance drought extremes in the United States throughout the twenty-first century. Projecting these changes can be complex in…”
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Modeling agriculture in the Community Land Model by Drewniak, B, Song, J, Prell, J, Kotamarthi, V. R, Jacob, R

“…The potential impact of climate change on agriculture is uncertain. In addition, agriculture could influence above- and below-ground carbon storage…”
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Radiative and thermodynamic responses to aerosol extinction profiles during the pre-monsoon month over South Asia by Feng, Y., Kotamarthi, V. R., Coulter, R., Zhao, C., Cadeddu, M.

“…Aerosol radiative effects and thermodynamic responses over South Asia are examined with the Weather Research and Forecasting model coupled with Chemistry…”
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Comparison of Observations and Predictions of Daytime Planetary-Boundary-Layer Heights and Surface Meteorological Variables in the Columbia River Gorge and Basin During the Second Wind Forecast Improvement Project by Bianco, Laura, Muradyan, P., Djalalova, I., Wilczak, J. M., Olson, J. B., Kenyon, J. S., Kotamarthi, R., Lantz, K., Long, C. N., Turner, D. D.

“…The second Wind Forecast Improvement Project (WFIP2) is an 18-month field campaign in the Pacific Northwest U.S.A., whose goal is to improve the accuracy of…”
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Optical properties and CCN activity of aerosols in a high‐altitude Himalayan environment: Results from RAWEX‐GVAX by Gogoi, Mukunda M., Babu, S. Suresh, Jayachandran, V., Moorthy, K. Krishna, Satheesh, S. K., Naja, Manish, Kotamarthi, V. R.

“…The seasonality and mutual dependence of aerosol optical properties and cloud condensation nuclei (CCN) activity under varying meteorological conditions at the…”
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Modeling the impact of agricultural land use and management on US carbon budgets by Drewniak, B. A, Mishra, U, Song, J, Prell, J, Kotamarthi, V. R

“…Cultivation of the terrestrial land surface can create either a source or sink of atmospheric CO2, depending on land management practices. The Community Land…”
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Increased absorption by coarse aerosol particles over the Gangetic–Himalayan region by Manoharan, V. S, Kotamarthi, R, Feng, Y, Cadeddu, M. P

“…Each atmospheric aerosol type has distinctive light-absorption characteristics related to its physical/chemical properties. Climate models treat black carbon…”
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Projected Changes to Cool‐Season Storm Tides in the 21st Century Along the Northeastern United States Coast by Pringle, William J., Wang, Jiali, Roberts, Keith J., Kotamarthi, Veerabhadra R.

“…This study investigates changes and uncertainties to cool‐season (November‐March) storm tides along the U.S. northeast coast in the 21st century under the high…”
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The combined and separate impacts of climate extremes on the current and future US rainfed maize and soybean production under elevated CO2 by Jin, Zhenong, Zhuang, Qianlai, Wang, Jiali, Archontoulis, Sotirios V., Zobel, Zachary, Kotamarthi, Veerabhadra R.

“…Heat and drought are two emerging climatic threats to the US maize and soybean production, yet their impacts on yields are collectively determined by the…”
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Large-eddy simulation sensitivities to variations of configuration and forcing parameters in canonical boundary-layer flows for wind energy applications by Mirocha, Jeffrey D, Churchfield, Matthew J, Muñoz-Esparza, Domingo, Rai, Raj K, Feng, Yan, Kosović, Branko, Haupt, Sue Ellen, Brown, Barbara, Ennis, Brandon L, Draxl, Caroline, Javier Sanz Rodrigo, Shaw, William J, Berg, Larry K, Moriarty, Patrick J, Linn, Rodman R, Kotamarthi, Veerabhadra R, Balakrishnan, Ramesh, Cline, Joel W, Robinson, Michael C, Ananthan, Shreyas

“…The sensitivities of idealized large-eddy simulations (LESs) to variations of model configuration and forcing parameters on quantities of interest to wind…”
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Downscaling with a nested regional climate model in near-surface fields over the contiguous United States by Wang, Jiali, Kotamarthi, Veerabhadra R.

“…The Weather Research and Forecasting (WRF) model is used for dynamic downscaling of 2.5‐degree National Centers for Environmental Prediction‐U.S. Department of…”
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EAKF-CMAQ: Introduction and evaluation of a data assimilation for CMAQ based on the ensemble adjustment Kalman filter by Zubrow, Alexis, Chen, Li, Kotamarthi, V. R.

“…A new approach is presented for data assimilation using the ensemble adjustment Kalman filter (EAKF) technique for surface measurements of carbon monoxide in a…”
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High-frequency vertical profiling of meteorological parameters using AMF1 facility during RAWEX–GVAX at ARIES, Nainital by Naja, Manish, Bhardwaj, Piyush, Singh, Narendra, Kumar, Phani, Kumar, Rajesh, Ojha, N., Sagar, Ram, Satheesh, S. K., Moorthy, K. Krishna, Kotamarthi, V. R.

“…An extensive field study, RAWEX–GVAX, was carried out during a 10-month (June 2011–March 2012) campaign at ARIES, Nainital and observations on a wide range of…”
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High‐resolution dynamically downscaled projections of precipitation in the mid and late 21st century over North America by Wang, Jiali, Kotamarthi, Veerabhadra R.

“…This study performs high‐spatial‐resolution (12 km) Weather Research and Forecasting (WRF) simulations over a very large domain (7200 km × 6180 km, covering…”
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Assessment of Dynamical Downscaling in Near-Surface Fields with Different Spectral Nudging Approaches Using the Nested Regional Climate Model (NRCM) by Wang, Jiali, Kotamarthi, Veerabhadra R.

“…Dynamic downscaling with regional-scale climate models is used widely for increasing the spatial resolution of global-scale climate model projections. One…”
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Evaluation of dynamically downscaled extreme temperature using a spatially-aggregated generalized extreme value (GEV) model by Wang, Jiali, Han, Yuefeng, Stein, Michael L., Kotamarthi, Veerabhadra R., Huang, Whitney K.

“…The weather research and forecast (WRF) model downscaling skill in extreme maximum daily temperature is evaluated by using the generalized extreme value (GEV)…”
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The combined and separate impacts of climate extremes on the current and future US rainfed maize and soybean production under elevated CO 2 by Jin, Zhenong, Zhuang, Qianlai, Wang, Jiali, Archontoulis, Sotirios V, Zobel, Zachary, Kotamarthi, Veerabhadra R

“…Heat and drought are two emerging climatic threats to the US maize and soybean production, yet their impacts on yields are collectively determined by the…”
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A new approach to scenario analysis using simplified chemical transport models by Im, H. K., Stein, M. L., Kotamarthi, V. R.

“…Given the computational burden of running full chemical transport models, it is highly desirable to have alternative ways to obtain fast and accurate…”
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Performance of WRF-Chem over Indian region: Comparison with measurements by Govardhan, Gaurav, Nanjundiah, Ravi S, Satheesh, S K, Krishnamoorthy, K, Kotamarthi, V R

“…The aerosol mass concentrations over several Indian regions have been simulated using the online chemistry transport model, WRF-Chem, for two distinct seasons…”
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