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Articles 1 - 30 of 106
Full-Text Articles in Earth Sciences
U.S. Drought Monitor, December 31, 2013, Matthew Rosencrans
U.S. Drought Monitor, December 31, 2013, Matthew Rosencrans
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for December 31, 2013 (12/31/13) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.
U.S. Drought Monitor, December 24, 2013, Matthew Rosencrans
U.S. Drought Monitor, December 24, 2013, Matthew Rosencrans
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for December 24, 2013 (12/24/13) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Hay, Cattle, Winter wheat.
U.S. Drought Monitor, December 17, 2013, Mark D. Svoboda
U.S. Drought Monitor, December 17, 2013, Mark D. Svoboda
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for December 17, 2013 (12/17/13) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.
U.S. Drought Monitor, December 10, 2013, Michael J. Brewer
U.S. Drought Monitor, December 10, 2013, Michael J. Brewer
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for December 10, 2013 (12/10/13) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.
U.S. Drought Monitor, December 3, 2013, Michael J. Brewer
U.S. Drought Monitor, December 3, 2013, Michael J. Brewer
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for December 3, 2013 (12/3/13) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.
Improving Time Structure Patterns Of Orthogonal Markov Chains And Its Consequences In Hydraulic Simulations, Juan C. Jaimes-Correa
Improving Time Structure Patterns Of Orthogonal Markov Chains And Its Consequences In Hydraulic Simulations, Juan C. Jaimes-Correa
School of Natural Resources: Dissertations, Theses, and Student Research
Rainfall1 occurrences understood as rain events are relevant for agricultural practices because temporal distribution of rainfall highly affects yield production. A few stochastic models satisfactorily generate daily rainfall events while preserving temporal and spatial dependence among multiple sites. I evaluated an extension on the traditional Orthogonal Markov chain (TOMC) model in reproducing the temporal structure of rainfall events at multiple sites in Florida (FL), Nebraska (NE) and California (CA). In addition, a simulation of watershed runoff from rainfall events, reproduced by a single- and multi-site weather generator, was conducted. Results shows that (i) a temporal structure extended …
Geoelectrical Detection Of Water Table Depth At Two Locations In The Los Osos Groundwater Basin, Hallie A. Douglas
Geoelectrical Detection Of Water Table Depth At Two Locations In The Los Osos Groundwater Basin, Hallie A. Douglas
Natural Resources Management and Environmental Sciences
The city of Los Osos sits on top of a coastal groundwater aquifer which is the sole supplier of all its residential, agricultural, and industrial water needs. Lacking a sewer system, the upper aquifer became progressively contaminated with nitrates over several decades. Groundwater pumping eventually shifted to the lower aquifer, however seawater intrusion of the lower aquifer caused by over-pumping has further degraded water quality. The Los Osos groundwater basin provides an excellent field region to examine the utility of geophysical methods for characterizing aquifer structure. In this study shallow (<20 >m) electrical resistivity imaging methods were performed at two …20>
Long-Term Residue And Water Management Effects On Soil Respiration And Soil Aggregate Stability In A Wheat-Soybean, Double-Crop System In Eastern Arkansas, Sharon Faye Smith
Long-Term Residue And Water Management Effects On Soil Respiration And Soil Aggregate Stability In A Wheat-Soybean, Double-Crop System In Eastern Arkansas, Sharon Faye Smith
Graduate Theses and Dissertations
Sustainability in agriculture is paramount to assuring continued production from our most naturally fertile soils. Storing carbon (C) in soil as organic matter through sustainable agricultural management practices can both remove atmospheric C and improve soil quality. The objective of this study was to evaluate the long-term effects of water management (irrigation and dryland), residue management [burn and no-burn, conventional (CT) and no-tillage (NT)] and residue/fertility level (high and low) on soil respiration and aggregate stability in a wheat- (Triticum aestivum L.) soybean [Glycine max (L.) Merr.], double-crop system in a silt-loam soil (Aquic Fraglossudalf) in the Mississippi River Delta …
Origin Of High Levels Of Ammonium In Groundwater, Ottawa County, Michigan, Derrick Lingle
Origin Of High Levels Of Ammonium In Groundwater, Ottawa County, Michigan, Derrick Lingle
Masters Theses
Groundwater from wells located in and around Hemlock Crossing Park in Ottawa County, Michigan has elevated levels of ammonium. High ammonium concentrations in potable water wells are a common indicator of anthropogenic impact, such as landfill leachate or agricultural activity. Ammonium can also occur in groundwater through the decay of natural organic material. Along with the retrieval of a complete glacial sediment core via rotasonic drilling, numerous chemical and isotopic parameters were used to determine the source of ammonium in the impacted aquifer.
Buried organic material, deposited during the Athens subepisode interglacial period, is in contact with groundwater containing elevated …
Umphlett Qci Dec 2013, Natalie A. Umphlett
Umphlett Qci Dec 2013, Natalie A. Umphlett
High Plains Regional Climate Center: Personnel Publications
Highlights for the Basin
Temperature and Precipitation Anomalies
Soil Moisture
September Flooding in Colorado
Early October Blizzard
3-Month Precipitation and Temperature Outlooks
U.S. Seasonal Drought Outlook
Hydrogeological And Thermal Sustainability Of Geothermal Borehole Heat Exchangers, S. Emad Dehkordi
Hydrogeological And Thermal Sustainability Of Geothermal Borehole Heat Exchangers, S. Emad Dehkordi
Electronic Thesis and Dissertation Repository
Assessment of the current approach taken by guidelines and design methods of vertical closed loop heat exchangers shows that often groundwater flow is either disregarded or is not methodically incorporated. The state of scientific research in this arena reveals that overlooking the groundwater flow in the design procedure may not always be a correct assumption. The significance of advective heat transport compared to conduction is defined by the groundwater flux or Darcy velocity which heavily depends on the hydraulic conductivity of the ground, followed by the hydraulic gradient which has a relatively limited range. A sensitivity analysis on ground and …
U.S. Drought Monitor, November 26, 2013, Richard R. Heim Jr.
U.S. Drought Monitor, November 26, 2013, Richard R. Heim Jr.
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for November 26, 2013 (11/26/13) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.
U.S. Drought Monitor, November 19, 2013, Richard R. Heim Jr.
U.S. Drought Monitor, November 19, 2013, Richard R. Heim Jr.
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for November 19, 2013 (11/19/13) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.
U.S. Drought Monitor, November 12, 2013, David Simeral
U.S. Drought Monitor, November 12, 2013, David Simeral
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for November 12, 2013 (11/12/13) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.
U.S. Drought Monitor, November 5, 2013, David Simeral
U.S. Drought Monitor, November 5, 2013, David Simeral
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for November 5, 2013 (11/5/13) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.
Ce-Qual-W2 Model And Model Set-Up, Scott A. Wells
Ce-Qual-W2 Model And Model Set-Up, Scott A. Wells
Civil and Environmental Engineering Faculty Publications and Presentations
Conference presentation that provides background information on the CE-QUAL-W2 water modeling software, with examples of its use and instructions on set-up and application.
U.S. Drought Monitor, October 29, 2013, Brian Fuchs
U.S. Drought Monitor, October 29, 2013, Brian Fuchs
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for October 29, 2013 (10/29/13) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.
U.S. Drought Monitor, October 22, 2013, Brian Fuchs
U.S. Drought Monitor, October 22, 2013, Brian Fuchs
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for October 22, 2013 (10/22/13) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.
U.S. Drought Monitor, October 15, 2013, Richard Tinker
U.S. Drought Monitor, October 15, 2013, Richard Tinker
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for October 15, 2013 (10/15/13) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.
Examining The Relationship Between Drought Development And Rapid Changes In The Evaporative Stress Index, Jason A. Otkin, Martha C. Anderson, Christopher Hain, Mark D. Svoboda
Examining The Relationship Between Drought Development And Rapid Changes In The Evaporative Stress Index, Jason A. Otkin, Martha C. Anderson, Christopher Hain, Mark D. Svoboda
Drought Mitigation Center: Faculty Publications
In this study, the ability of a new drought metric based on thermal infrared remote sensing imagery to provide early warning of an elevated risk for drought intensification is assessed. This new metric, called the rapid change index (RCI), is designed to highlight areas undergoing rapid changes in moisture stress as inferred from weekly changes in the evaporative stress index (ESI) generated using the Atmosphere–Land Exchange Inverse (ALEXI) surface energy balance model. Two case study analyses across the central United States revealed that the initial appearance of negative RCI values indicative of rapid increases in moisture stress preceded the introduction …
U.S. Drought Monitor, October 8, 2013, Richard Tinker
U.S. Drought Monitor, October 8, 2013, Richard Tinker
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for October 8, 2013 (10/8/13) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.
U.S. Drought Monitor, October 1, 2013, David Miskus
U.S. Drought Monitor, October 1, 2013, David Miskus
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for October 1, 2013 (10/1/13) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.
Planning And Drought, James C. Schwab
Planning And Drought, James C. Schwab
National Drought Mitigation Center: Publications
TABLE OF CONTENTS
Chapter 1: Drought: The Problem.............................................. 1
Water Impacts ............................................................................... 2
Public Health Impacts ......................................................... 4
Environmental Impacts ..................................................... 5
Built Environment Impacts................................................ 6
Secondary Hazards ......................................................... 9
Economic Impacts ................................................................... 10
Drought as a Challenge for Planners .......................................... 13
Chapter 2: Drought: The Knowledge Base ................................................... 15
Spatial and Seasonal Patterns of Drought ................................................................ 16
Drought and Climate Changes .................................................................................. 19
Tracking Drought: Tools and Resources ................................................................... 20
Using the Drought Resources Toolbox...................................................................... 22
Droughtscape- Fall 2013, National Drought Mitigation Center
Droughtscape- Fall 2013, National Drought Mitigation Center
Droughtscape, Quarterly Newsletter of NDMC, 2007-
CONTENTS
Director’s Report ....................1
Kansas community drought planning workshop Nov. 5 ...... 2
Drought impacts webinars .....3
Drought outlook & summary ... 4
Late summer drought brings more agricultural impacts ....... 6
Plans help ranchers weather drought ................................. 10
NDMC contributions to U2U project ..................................12
Drought Management Database archives strategies................13
QuickDRI will help spot flash droughts................................ 14
NDMC Co-Hosts NASA work- shop......................................15
Wilhite leads Integrated Drought Management Program work....... 15
Speaking of drought ............ 16
Managing #Drought tweet chat transcript ..............................17
Updated USDM website ....... 17
U.S. Drought Monitor, September 24, 2013, Brad Rippey
U.S. Drought Monitor, September 24, 2013, Brad Rippey
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for September 24, 2013 (9/24/13) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.
Individual And Combined Effects Of Land Use/Cover And Climate Change On Wolf Bay Watershed Streamflow In Southern Alabama, Ruoyu Wang
Ruoyu Wang
U.S. Drought Monitor, September 17, 2013, David Miskus
U.S. Drought Monitor, September 17, 2013, David Miskus
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for September 17, 2013 (9/17/13) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.
U.S. Drought Monitor, September 10, 2013, Anthony Artusa
U.S. Drought Monitor, September 10, 2013, Anthony Artusa
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for September 10, 2013 (9/10/13) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.
U.S. Drought Monitor, September 3, 2013, David Miskus
U.S. Drought Monitor, September 3, 2013, David Miskus
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for September 3, 2013 (9/3/13) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.
Uncertainty In Climatic Change Impacts On Multiscale Watershed Systems, Olga V. Tsvetkova
Uncertainty In Climatic Change Impacts On Multiscale Watershed Systems, Olga V. Tsvetkova
Open Access Dissertations
Uncertainty in climate change plays a major role in watershed systems. The increase in variability and intensity in temperature and precipitation affects hydrologic cycle in spatial and temporal dimensions. Predicting uncertainty in climate change impacts on watershed systems can help to understand future climate-induced risk on watershed systems and is essential for designing policies for mitigation and adaptation. Modeling the temporal patterns of uncertainties is assessed in the New England region for temperature and precipitation patterns over a long term. The regional uncertainty is modeled using Python scripting and GIS to analyze spatial patterns of climate change uncertainties over space …