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- Conservation and Survey Division (11)
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- School of Natural Resources: Dissertations, Theses, and Student Research (2)
- Drought Mitigation Center: Faculty Publications (1)
Articles 1 - 21 of 21
Full-Text Articles in Physical Sciences and Mathematics
Understanding The Zonal Variability In Cmip6 Projections Of Sahelian Precipitation, Emmanuel Ogwuche Audu
Understanding The Zonal Variability In Cmip6 Projections Of Sahelian Precipitation, Emmanuel Ogwuche Audu
Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research
The uncertainty in model projections of future precipitation across the Sahel has persisted across many generations of Earth System Models (ESMs), with some models predicting drying and others moistening across this region. These discrepancies in future projections pose a challenge for stakeholders and decision makers. Many projections of Sahel precipitation found in the ESMs participating in the sixth phase of Coupled Model Intercomparison Project (CMIP6) show a zonal dipole in precipitation trend, with moistening across the Central and Eastern Sahel and drying projected for the Western Sahel. Previous studies have connected precipitation variability across the Sahel to changes in various …
Irrigation’S Impact On A Precipitation Event During Grainex In Nebraska, Usa, Daniel Whitesel
Irrigation’S Impact On A Precipitation Event During Grainex In Nebraska, Usa, Daniel Whitesel
School of Natural Resources: Dissertations, Theses, and Student Research
Numerous precipitation events were observed during the Great Plains Irrigation Experiment (GRAINEX). However, the precipitation event that was observed the morning of 23 July 2018 is the focus of this thesis. Six experiments were conducted which involved increasing or decreasing soil moisture by 5% increments over the irrigated cropland. An additional experiment, which changed the irrigated land use to grassland, showed precipitation increases. It was found that regardless of strength of irrigation, average precipitation decreased. Average precipitation decreased by up to 72% when irrigation increased compared to the control simulation and decreased by up to 85% when irrigation decreased compared …
Increased Drought Severity Tracks Warming In The United States’ Largest River Basin, Justin T. Martin, Gregory T. Pederson, Connie A. Woodhouse, Edward R. Cook, Gregory J. Mccabe, Kevin J. Anchukaitis, Erika K. Wise, Patrick J. Erger, Larry Dolan, Marketa Mcguire, Subhrendu Gangopadhyay, Katherine J. Chase, Jeremy S. Litell, Stephen T. Gray, Scott St. George, Jonathan M. Friedman, David J. Sauchyn, Jeannine-Marie St-Jacques, John King
Increased Drought Severity Tracks Warming In The United States’ Largest River Basin, Justin T. Martin, Gregory T. Pederson, Connie A. Woodhouse, Edward R. Cook, Gregory J. Mccabe, Kevin J. Anchukaitis, Erika K. Wise, Patrick J. Erger, Larry Dolan, Marketa Mcguire, Subhrendu Gangopadhyay, Katherine J. Chase, Jeremy S. Litell, Stephen T. Gray, Scott St. George, Jonathan M. Friedman, David J. Sauchyn, Jeannine-Marie St-Jacques, John King
United States Geological Survey: Staff Publications
Across the Upper Missouri River Basin, the recent drought of 2000 to 2010, known as the “turn-of-the-century drought,” was likely more severe than any in the instrumental record including the Dust Bowl drought. However, until now, adequate proxy records needed to better understand this event with regard to long-term variability have been lacking. Here we examine 1,200 y of streamflow from a network of 17 new tree-ring–based reconstructions for gages across the upper Missouri basin and an independent reconstruction of warm-season regional temperature in order to place the recent drought in a long-term climate context. We find that temperature has …
Biomass Burning, Land-Cover Change, And The Hydrological Cycle In Northern Sub-Saharan Africa, Charles Ichoku, Luke T. Ellison, K. Elena Willmot, Toshihisa Matsui, Amin K. Dezfuli, Charles K. Gatebe, Jun Wang, Eric M. Wilcox, Jejung Lee, Jimmy Adegoke, Churchill Okonkwo, John Bolten, Frederick S. Policelli, Shahid Habib
Biomass Burning, Land-Cover Change, And The Hydrological Cycle In Northern Sub-Saharan Africa, Charles Ichoku, Luke T. Ellison, K. Elena Willmot, Toshihisa Matsui, Amin K. Dezfuli, Charles K. Gatebe, Jun Wang, Eric M. Wilcox, Jejung Lee, Jimmy Adegoke, Churchill Okonkwo, John Bolten, Frederick S. Policelli, Shahid Habib
Department of Earth and Atmospheric Sciences: Faculty Publications
The Northern Sub-Saharan African (NSSA) region, which accounts for 20%–25%of the global carbon emissions from biomass burning, also suffers from frequent drought episodes and other disruptions to the hydrological cycle whose adverse societal impacts have been widely reported during the last several decades. This paper presents a conceptual framework of the NSSA regional climate system components that may be linked to biomass burning, as well as detailed analyses of a variety of satellite data for 2001–2014 in conjunction with relevant model-assimilated variables. Satellite fire detections in NSSA show that the vast majority (>75%) occurs in the savanna and woody …
Changing Forest Water Yields In Response To Climate Warming: Results From Long-Term Experimental Watershed Sites Across North America, Irena F. Creed, Adam T. Spargo, Julia A. Jones, Jim M. Buttle, Mary B. Adams, Fred D. Beall, Eric G. Booth, John L. Campbell, Dave Clow, Kelly Elder, Mark B. Green, Nancy B. Grimm, Chelcy Miniat, Patricia Ramlal, Amartya Saha, Stephen Sebestyen, Dave Spittlehouse, Shannon Sterling, Mark W. Williams, Rita Wrinkler, Huaxia Yao
Changing Forest Water Yields In Response To Climate Warming: Results From Long-Term Experimental Watershed Sites Across North America, Irena F. Creed, Adam T. Spargo, Julia A. Jones, Jim M. Buttle, Mary B. Adams, Fred D. Beall, Eric G. Booth, John L. Campbell, Dave Clow, Kelly Elder, Mark B. Green, Nancy B. Grimm, Chelcy Miniat, Patricia Ramlal, Amartya Saha, Stephen Sebestyen, Dave Spittlehouse, Shannon Sterling, Mark W. Williams, Rita Wrinkler, Huaxia Yao
USDA Forest Service / UNL Faculty Publications
Climate warming is projected to affect forest water yields but the effects are expected to vary. We investigated how forest type and age affect water yield resilience to climate warming. To answer this question, we examined the variability in historical water yields at long-term experimental catchments across Canada and the United States over 5-year cool and warm periods. Using the theoretical framework of the Budyko curve, we calculated the effects of climate warming on the annual partitioning of precipitation (P) into evapotranspiration (ET) and water yield. Deviation (d) was defined as a catchment’s change in actual ET divided by P …
Impacts Of Climate Change On The Surface Water Balance Of The Central United States, 1984-2007, Bo Dong
Impacts Of Climate Change On The Surface Water Balance Of The Central United States, 1984-2007, Bo Dong
School of Natural Resources: Dissertations, Theses, and Student Research
The climate system and the hydrologic cycle are strongly connected with each other. Understanding the interactions between these two systems is important, since variations in climate can trigger extensive changes in the hydrologic cycle, with significant impacts on agriculture, ecosystems, and society. Observations over the central U.S. in recent decades show numerous changes in climatic variables. This includes decreases in cloud cover and wind speed, increases in air temperature, and seasonal shifts in precipitation rate and rain/snow fraction. To assess the impacts of these variations in climate on the regional water cycle, a terrestrial ecosystem/land surface hydrologic model (Agro-IBIS) is …
Atlantic Multidecadal Oscillation-Forced Regional Summertime Precipitation Variations In The Central United States, Michael C. Veres
Atlantic Multidecadal Oscillation-Forced Regional Summertime Precipitation Variations In The Central United States, Michael C. Veres
Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research
The purpose of this research is to identify the regional mechanisms by which the Atlantic Multidecadal Oscillation (AMO) influences summer (June-August) precipitation in the central U.S. This was accomplished by running two different sets of simulations using the Weather Research and Forecasting (WRF) regional climate model, one forced by observations and the other forced only by variations in the AMO as obtained via a global climate model (GCM). The results reveal a complex set of mechanisms active in the lower and middle troposphere by which the AMO influences summer circulation and precipitation in the central U.S. During the cold phase …
Effects Of Drought On Avian Community Structure, Thomas P. Albright, Anna M. Pidgeon, Chadwick D. Rittenhouse, Murray K. Clayton, Curtis H. Flather, Patrick D. Culbert, Brian D. Wardlows, Volker C. Radeloff
Effects Of Drought On Avian Community Structure, Thomas P. Albright, Anna M. Pidgeon, Chadwick D. Rittenhouse, Murray K. Clayton, Curtis H. Flather, Patrick D. Culbert, Brian D. Wardlows, Volker C. Radeloff
Drought Mitigation Center: Faculty Publications
Droughts are expected to become more frequent under global climate change. Avifauna depend on precipitation for hydration, cover, and food. While there are indications that avian communities respond negatively to drought, little is known about the response of birds with differing functional and behavioral traits, what time periods and indicators of drought are most relevant, or how response varies geographically at broad spatial scales. Our goals were thus to determine (1) how avian abundance and species richness are related to drought, (2) whether community variations are more related to vegetation vigor or precipitation deviations and at what time periods relationships …
The Nature And Origin Of Decadal To Millennial Scale Climate Variability In The Southern Tropics Of South America: The Holocene Record Of Lago Umayo, Peru, Paul A. Baker, Sherilyn C. Fritz, Stephen J. Burns, Erik Ekdahl, Catherine A. Rigsby
The Nature And Origin Of Decadal To Millennial Scale Climate Variability In The Southern Tropics Of South America: The Holocene Record Of Lago Umayo, Peru, Paul A. Baker, Sherilyn C. Fritz, Stephen J. Burns, Erik Ekdahl, Catherine A. Rigsby
Department of Earth and Atmospheric Sciences: Faculty Publications
This paper serves two purposes: to review current ideas about the nature and forcing of decadal to millennial scale precipitation variation in the southern tropics of South America during the late Quaternary and to present a new methodology for the reconstruction of precipitation as applied to a Holocene stable isotopic record of carbonate sediments in a tropical Andean lake, Lago Umayo, Peru. The basic thesis of the first part of the paper is that, although modern instrumental records suffice for deducing climate variability at decadal and shorter time scales, these records cannot adequately characterize the nature and forcing of lower-frequency …
A Late Quaternary Diatom Record Of Tropical Climatic History From Lake Titicaca (Peru And Bolivia), Pedro M. Tapia, Sherilyn C. Fritz, Paul A. Baker, Geoffrey A. Seltzer, Robert B. Dunbar
A Late Quaternary Diatom Record Of Tropical Climatic History From Lake Titicaca (Peru And Bolivia), Pedro M. Tapia, Sherilyn C. Fritz, Paul A. Baker, Geoffrey A. Seltzer, Robert B. Dunbar
Department of Earth and Atmospheric Sciences: Faculty Publications
A composite high-resolution diatom stratigraphy from three piston cores and one box-core in the deep sub-basin of Lake Titicaca reveals large moisture variations during the past 30 kyr in the Altiplano region. Diatom sequences indicate orbital and millennial-scale variability in water level and salinity. The pelagic freshwater diatom species Cyclotella andina and Cyclotella stelligera dominate Glacial-age sediments, suggesting that the lake was above its present outlet. Generally, wet conditions continued until 11,000 cal yr BP, as indicated by high percentages of freshwater planktonic diatoms. Large pulses of benthic diatom species between about 11,000 and 10,000 cal yr BP suggest brief …
Annual Departures From Average Annual Precipitation In Nebraska, 1876-1995/ Annual Installation Of Irrigation Wells (1937-1995), Conservation Survey Division
Annual Departures From Average Annual Precipitation In Nebraska, 1876-1995/ Annual Installation Of Irrigation Wells (1937-1995), Conservation Survey Division
Conservation and Survey Division
No abstract provided.
Annual Departures From Average Annual Precipitation In Nebraska, 1850-1989, Conservation Survey Division
Annual Departures From Average Annual Precipitation In Nebraska, 1850-1989, Conservation Survey Division
Conservation and Survey Division
No abstract provided.
Annual Departures From Average Annual Precipitation In Nebraska, 1850-1989, Conservation And Survey Division
Annual Departures From Average Annual Precipitation In Nebraska, 1850-1989, Conservation And Survey Division
Conservation and Survey Division
No abstract provided.
Annual Departures From Average Annual Precipitation In Nebraska, 1850-1983, Conservation Survey Division
Annual Departures From Average Annual Precipitation In Nebraska, 1850-1983, Conservation Survey Division
Conservation and Survey Division
No abstract provided.
Annual Departures From Average Annual Precipitation In Nebraska, 1850-1983, Conservation And Survey Division
Annual Departures From Average Annual Precipitation In Nebraska, 1850-1983, Conservation And Survey Division
Conservation and Survey Division
No abstract provided.
Annual Departures From Average Annual Precipitation In Nebraska, 1850-1983, Conservation Survey Division
Annual Departures From Average Annual Precipitation In Nebraska, 1850-1983, Conservation Survey Division
Conservation and Survey Division
No abstract provided.
Annual Departures From Average Annual Precipitation In Nebraska, 1850-1982, Conservation And Survey Division
Annual Departures From Average Annual Precipitation In Nebraska, 1850-1982, Conservation And Survey Division
Conservation and Survey Division
No abstract provided.
Annual Departures From Average Annual Precipitation In Nebraska, 1850-1982, Conservation Survey Division
Annual Departures From Average Annual Precipitation In Nebraska, 1850-1982, Conservation Survey Division
Conservation and Survey Division
No abstract provided.
Annual Departures From Average Annual Precipitation In Nebraska, 1850-1979, Conservation Survey Division
Annual Departures From Average Annual Precipitation In Nebraska, 1850-1979, Conservation Survey Division
Conservation and Survey Division
No abstract provided.
Statewide Precipitation And Discharge Of Platte River Above Ashland, Bryce B. Pease
Statewide Precipitation And Discharge Of Platte River Above Ashland, Bryce B. Pease
Conservation and Survey Division
No abstract provided.
Nebraska's Water Supply Map Including Groundwater In Storage, Total Water Withdrawals, Precipitation, And Outflow As Of 1969
Conservation and Survey Division
No abstract provided.