Search Results - "Ek, Michael B."

Assessment of simulated water balance from Noah, Noah-MP, CLM, and VIC over CONUS using the NLDAS test bed by Cai, Xitian, Yang, Zong-Liang, Xia, Youlong, Huang, Maoyi, Wei, Helin, Leung, L. Ruby, Ek, Michael B.

“…This study assesses the hydrologic performance of four land surface models (LSMs) for the conterminous United States using the North American Land Data…”
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Verification of Land–Atmosphere Coupling in Forecast Models, Reanalyses, and Land Surface Models Using Flux Site Observations by Dirmeyer, Paul A., Chen, Liang, Wu, Jiexia, Shin, Chul-Su, Huang, Bohua, Cash, Benjamin A., Bosilovich, Michael G., Mahanama, Sarith, Koster, Randal D., Santanello, Joseph A., Ek, Michael B., Balsamo, Gianpaolo, Dutra, Emanuel, Lawrence, David M.

“…This study compares four model systems in three configurations (LSM, LSM + GCM, and reanalysis) with global flux tower observations to validate states, surface…”
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Noah LSM Snow Model Diagnostics and Enhancements by Livneh, Ben, Xia, Youlong, Mitchell, Kenneth E., Ek, Michael B., Lettenmaier, Dennis P.

“…A negative snow water equivalent (SWE) bias in the snow model of the Noah land surface scheme used in the NCEP suite of numerical weather and climate…”
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SYSTEMATIC ERRORS IN WEATHER AND CLIMATE MODELS: Nature, Origins, and Ways Forward by Zadra, Ayrton, Williams, Keith, Frassoni, Ariane, Rixen, Michel, Adames, Ángel F., Berner, Judith, Bouyssel, François, Casati, Barbara, Christensen, Hannah, Ek, Michael B., Flato, Greg, Huang, Yi, Judt, Falko, Lin, Hai, Maloney, Eric, Merryfield, William, Van Niekerk, Annelize, Rackow, Thomas, Saito, Kazuo, Wedi, Nils, Yadav, Priyanka

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Calibration and validation of lake surface temperature simulations with the coupled WRF-lake model by Gu, Hongping, Jin, Jiming, Wu, Yihua, Ek, Michael B., Subin, Zachary M.

“…A one-dimensional (1-D) physically based lake model was coupled to the Weather Research and Forecasting (WRF) model version 3.2 developed by the National…”
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Comparison of NLDAS-2 Simulated and NASMD Observed Daily Soil Moisture: Part I: Comparison and Analysis by Xia, Youlong, Ek, Michael B., Wu, Yihua, Ford, Trent, Quiring, Steven M.

“…Soil moisture observations from seven observational networks (spanning portions of seven states) with different biome and climate conditions were used in this…”
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Evaluation of NLDAS‐2 evapotranspiration against tower flux site observations by Xia, Youlong, Hobbins, Michael T, Mu, Qiaozhen, Ek, Michael B

“…The North American Land Data Assimilation System project phase 2 (NLDAS‐2) has run four land surface models for a 30‐year (1979–2008) retrospective period…”
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Comparison and Assessment of Three Advanced Land Surface Models in Simulating Terrestrial Water Storage Components over the United States by Xia, Youlong, Mocko, David, Huang, Maoyi, Li, Bailing, Rodell, Matthew, Mitchell, Kenneth E., Cai, Xitian, Ek, Michael B.

“…To prepare for the next-generation North American Land Data Assimilation System (NLDAS), three advanced land surface models [LSMs; i.e., Community Land Model,…”
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Assessing Impacts of Integrating MODIS Vegetation Data in the Weather Research and Forecasting (WRF) Model Coupled to Two Different Canopy-Resistance Approaches by Kumar, Anil, Chen, Fei, Barlage, Michael, Ek, Michael B., Niyogi, Dev

“…The impact of 8-day-averaged data from the Moderate Resolution Imaging Spectroradiometer (MODIS) sensor—namely, the 1-km leaf area index, absorbed…”
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Coupling of a physically based lake model into the climate forecast system to improve winter climate forecasts for the Great Lakes region by Lv, Zhemin, Zhang, Shaobo, Jin, Jiming, Wu, Yihua, Ek, Michael B.

“…In this study, we coupled the two-layer one-dimensional Freshwater lake (FLake) model into the Climate Forecast System (CFS) version 2 to improve simulations…”
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Real-time weekly global green vegetation fraction derived from advanced very high resolution radiometer-based NOAA operational global vegetation index (GVI) system by Jiang, Le, Kogan, Felix N., Guo, Wei, Tarpley, J. Dan, Mitchell, Kenneth E., Ek, Michael B., Tian, Yuhong, Zheng, Weizhong, Zou, Cheng-Zhi, Ramsay, Bruce H.

“…To provide quality‐improved and consistent real‐time global green vegetation fraction (GVF) data products that are suitable for use in operational numerical…”
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Deriving global parameter estimates for the Noah land surface model using FLUXNET and machine learning by Chaney, Nathaniel W., Herman, Jonathan D., Ek, Michael B., Wood, Eric F.

“…With their origins in numerical weather prediction and climate modeling, land surface models aim to accurately partition the surface energy balance. An…”
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Application of USDM statistics in NLDAS-2: Optimal blended NLDAS drought index over the continental United States by Xia, Youlong, Ek, Michael B., Peters-Lidard, Christa D., Mocko, David, Svoboda, Mark, Sheffield, Justin, Wood, Eric F.

“…This study performs three experiments to calibrate the drought area percentages in the continental United States (CONUS), six U.S. Drought Monitor (USDM)…”
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Comparison of NLDAS-2 Simulated and NASMD Observed Daily Soil Moisture: Part II: Impact of Soil Texture Classification and Vegetation Type Mismatches by Xia, Youlong, Ek, Michael B., Wu, Yihua, Ford, Trent, Quiring, Steven M.

“…In this second part of a two-part paper, the impacts of soil texture and vegetation type misclassification and their combined effect on soil moisture,…”
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Confronting Weather and Climate Models with Observational Data from Soil Moisture Networks over the United States by Dirmeyer, Paul A., Wu, Jiexia, Norton, Holly E., Dorigo, Wouter A., Quiring, Steven M., Ford, Trenton W., Santanello, Joseph A., Bosilovich, Michael G., Ek, Michael B., Koster, Randal D., Balsamo, Gianpaolo, Lawrence, David M.

“…Four land surface models in uncoupled and coupled configurations are compared to observations of daily soil moisture from 19 networks in the conterminous…”
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Impacts of Noah model physics on catchment‐scale runoff simulations by Zheng, Donghai, Van der Velde, Rogier, Su, Zhongbo, Wen, Jun, Wang, Xin, Booij, Martijn J., Hoekstra, Arjen Y., Lv, Shihua, Zhang, Yu, Ek, Michael B.

“…Noah model physics options validated for the source region of the Yellow River (SRYR) are applied to investigate their ability in reproducing runoff at the…”
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Comprehensive Evaluation of the Variable Infiltration Capacity (VIC) Model in the North American Land Data Assimilation System by Xia, Youlong, Mocko, David M., Wang, Shugong, Pan, Ming, Kumar, Sujay V., Peters-Lidard, Christa D., Wei, Helin, Wang, Dagang, Ek, Michael B.

“…Since the second phase of the North American Land Data Assimilation System (NLDAS-2) was operationally implemented at NOAA/NCEP as part of the production suite…”
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Basin‐scale assessment of the land surface water budget in the National Centers for Environmental Prediction operational and research NLDAS‐2 systems by Xia, Youlong, Cosgrove, Brian A., Mitchell, Kenneth E., Peters‐Lidard, Christa D., Ek, Michael B., Brewer, Michael, Mocko, David, Kumar, Sujay V., Wei, Helin, Meng, Jesse, Luo, Lifeng

“…The purpose of this study is to evaluate the components of the land surface water budget in the four land surface models (Noah, SAC‐Sacramento Soil Moisture…”
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Automated Quality Control of In Situ Soil Moisture from the North American Soil Moisture Database Using NLDAS-2 Products by Xia, Youlong, Ford, Trent W., Wu, Yihua, Quiring, Steven M., Ek, Michael B.

“…The North American Soil Moisture Database (NASMD) was initiated in 2011 to provide support for developing climate forecasting tools, calibrating land surface…”
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Basin‐scale assessment of the land surface energy budget in the National Centers for Environmental Prediction operational and research NLDAS‐2 systems by Xia, Youlong, Cosgrove, Brian A., Mitchell, Kenneth E., Peters‐Lidard, Christa D., Ek, Michael B., Kumar, Sujay, Mocko, David, Wei, Helin

“…This paper compares the annual and monthly components of the simulated energy budget from the North American Land Data Assimilation System phase 2 (NLDAS‐2)…”
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