Search Results - "Marek, Gary W"

Methods for downhole soil water sensor calibration—Complications of bulk density and water content variations by Evett, Steven R., Marek, Gary W., Colaizzi, Paul D., Copeland, Karen S., Ruthardt, Brice B.

“…Downhole soil volumetric water content (VWC) sensors are used in access tubes to assess the soil water content at multiple depths. If sensor readings are…”
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Developing an Automated Python Surface Energy Balance System (PySEBS) Software for Calculating Actual Evapotranspiration-Software Development and Application Case in Jilin Province, China by Liu, Haipeng, Huang, Feng, Li, Yingxuan, Ren, Pinpin, Marek, Gary W., Ding, Beibei, Li, Baoguo, Chen, Yong

“…In this study, Python Surface Energy Balance System (PySEBS) software was developed in the Python 2.7 programming language for continuous calculation of actual…”
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Soil Water Sensor Performance and Corrections with Multiple Installation Orientations and Depths under Three Agricultural Irrigation Treatments by Chen, Yong, Marek, Gary W, Marek, Thomas H, Heflin, Kevin R, Porter, Dana O, Moorhead, Jerry E, Brauer, David K

“…Performance evaluations and corrections of soil water sensors have not been studied using different installation orientations under various irrigation…”
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Evaluation of Sensible Heat Flux and Evapotranspiration Estimates Using a Surface Layer Scintillometer and a Large Weighing Lysimeter by Moorhead, Jerry E, Marek, Gary W, Colaizzi, Paul D, Gowda, Prasanna H, Evett, Steven R, Brauer, David K, Marek, Thomas H, Porter, Dana O

“…Accurate estimates of actual crop evapotranspiration (ET) are important for optimal irrigation water management, especially in arid and semi-arid regions…”
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Impacts of Ongoing Land-Use Change on Watershed Hydrology and Crop Production Using an Improved SWAT Model by Li, Baogui, Marek, Gary W., Marek, Thomas H., Porter, Dana O., Ale, Srinivasulu, Moorhead, Jerry E., Brauer, David K., Srinivasan, Raghavan, Chen, Yong

“…The southern Ogallala Aquifer continues to deplete due to decades of irrigation with minimal recharge. Recently enacted regulations limiting groundwater…”
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Evaluation of Evapotranspiration from Eddy Covariance Using Large Weighing Lysimeters by Moorhead, Jerry, Marek, Gary, Gowda, Prasanna, Lin, Xiaomao, Colaizzi, Paul, Evett, Steven, Kutikoff, Seth

“…Evapotranspiration (ET) is an important component in the water budget and used extensively in water resources management such as water planning and irrigation…”
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Modeling Basin-Scale Impacts of Cultivation Practices on Cotton Yield and Water Conservation under Various Hydroclimatic Regimes by Tan, Lili, Zhang, Yingqi, Marek, Gary W., Ale, Srinivasulu, Brauer, David K., Chen, Yong

“…The SWAT model equipped with an improved auto-irrigation function was used to assess the impacts of cultivation practices on irrigated and dryland cotton yield…”
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Preliminary crop coefficients for late planted short‐season soybean: Texas High Plains by Marek, Gary W., Evett, Steven R., Colaizzi, Paul D., Brauer, David K.

“…Having similar profit potential but roughly half of the water requirements of corn (Zea mays L.), cotton (Gossypium hirsutum L.) has become an attractive crop…”
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Assessment of Landsat-Based Evapotranspiration Using Weighing Lysimeters in the Texas High Plains by Hashem, Ahmed A., Engel, Bernard A., Bralts, Vincent F., Marek, Gary W., Moorhead, Jerry E., Radwan, Sherif A., Gowda, Prasanna H.

“…Evapotranspiration (ET) is one of the largest data gaps in water management due to the limited availability of measured evapotranspiration data, and because ET…”
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Assessment of Alternative Agricultural Land Use Options for Extending the Availability of the Ogallala Aquifer in the Northern High Plains of Texas by Chen, Yong, Marek, Gary, Marek, Thomas, Moorhead, Jerry, Heflin, Kevin, Brauer, David, Gowda, Prasanna, Srinivasan, Raghavan

“…The Ogallala Aquifer has experienced a continuous decline in water levels due to decades of irrigation pumping with minimal recharge. Corn is one of the major…”
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Assessing impacts of global climate change on water and food security in the black soil region of Northeast China using an improved SWAT-CO2 model by Zhang, Yingqi, Liu, Haipeng, Qi, Junyu, Feng, Puyu, Zhang, Xueliang, Liu, De Li, Marek, Gary W., Srinivasan, Raghavan, Chen, Yong

“…Future climate change may have substantial impacts on both water resources and food security in China's black soil region. The Liao River Basin (LRB; 220,000…”
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Assessment of the sustainability of groundwater utilization and crop production under optimized irrigation strategies in the North China Plain under future climate change by Tan, Lili, Zhang, Xueliang, Qi, Junyu, Sun, Danfeng, Marek, Gary W., Feng, Puyu, Li, Baogui, Liu, De Li, Li, Baoguo, Srinivasan, Raghavan, Chen, Yong

“…Over-exploitation of groundwater due to intensive irrigation and anticipated climate change pose severe threats to the water and food security worldwide,…”
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Improving hydrological modeling to close the gap between elevated CO2 concentration and crop response: Implications for water resources by Wen, Na, Han, Yiwen, Qi, Junyu, Marek, Gary W., Sun, Danfeng, Feng, Puyu, Srinivasan, Raghavan, Liu, De Li, Chen, Yong

“…•Physically-based CO2 response and dynamic input module was incorporated into SWAT.•PET was the most sensitive variable under elevated [CO2] using the modified…”
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Net ecosystem exchange of CO2 and H2O fluxes from irrigated grain sorghum and maize in the Texas High Plains by Wagle, Pradeep, Gowda, Prasanna H., Moorhead, Jerry E., Marek, Gary W., Brauer, David K.

“…Net ecosystem exchange (NEE) of carbon dioxide (CO2) and water vapor (H2O) fluxes from irrigated grain sorghum (Sorghum bicolor L. Moench) and maize (Zea mays…”
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Enhanced Freeze‐Thaw Cycle Altered the Simulations of Groundwater Dynamics in a Heavily Irrigated Basin in the Temperate Region of China by Li, Baogui, Tan, Lili, Zhang, Xueliang, Qi, Junyu, Marek, Gary W., Feng, Puyu, Liu, De Li, Luo, Xi, Srinivasan, Raghavan, Chen, Yong

“…With intensified global warming, accurate quantification of hydrological processes in seasonally frozen regions, particularly with irrigated overwinter crops,…”
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Assessing the Response Mechanisms of Elevated CO2 Concentration on Various Forms of Nitrogen Losses in the Golden Corn Belt by Zhang, Yingqi, Han, Yiwen, Wen, Na, Qi, Junyu, Zhang, Xiaoyu, Marek, Gary W., Srinivasan, Raghavan, Feng, Puyu, Liu, De Li, Hu, Kelin, Chen, Yong

“…Nitrogen (N) loss is a significant source of water quality pollution in alluvial watersheds. However, the mechanisms linking N loss and elevated CO2…”
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Watershed scale evaluation of an improved SWAT auto-irrigation function by Chen, Yong, Marek, Gary W., Marek, Thomas H., Porter, Dana O., Moorhead, Jerry E., Heflin, Kevin R., Brauer, David K., Srinivasan, Raghavan

“…The SWAT model is a well-documented hydrologic model. However, some studies report that the existing SWAT auto-irrigation methods are unable to represent…”
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Evaluation of uncalibrated energy balance model (BAITSSS) for estimating evapotranspiration in a semiarid, advective climate by Dhungel, Ramesh, Aiken, Robert, Colaizzi, Paul D., Lin, Xiaomao, O'Brien, Dan, Baumhardt, R. Louis, Brauer, David K., Marek, Gary W.

“…The backward‐averaged iterative two‐source surface temperature and energy balance solution (BAITSSS) model was developed to calculate evapotranspiration (ET)…”
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Estimating Evapotranspiration for Dryland Cropping Systems in the Semiarid Texas High Plains Using SWAT by Marek, Gary W., Gowda, Prasanna H., Evett, Steven R., Baumhardt, R. Louis, Brauer, David K., Howell, Terry A., Marek, Thomas H., Srinivasan, R.

“…The Soil and Water Assessment Tool (SWAT) is one of the most widely used watershed models for simulating hydrology in response to agricultural management…”
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Modeling streamflow response under changing environment using a modified SWAT model with enhanced representation of CO2 effects by Li, Baogui, Tan, Lili, Zhang, Xueliang, Qi, Junyu, Marek, Gary W., Li, Yingxuan, Dong, Xiaojie, Zhao, Wenjie, Chen, Ting, Feng, Puyu, Liu, De Li, Srinivasan, Raghavan, Chen, Yong

“…Haihe River Basin (HRB) in North China Plain. Changes in streamflow due to climate change and human activities are highly uncertain. An improved Soil and Water…”
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