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Articles 781 - 810 of 1784

Full-Text Articles in Earth Sciences

Umphlett Qci June 2016, Natalie Umphlett Jun 2016

Umphlett Qci June 2016, Natalie Umphlett

High Plains Regional Climate Center: Staff Publications

Highlights for the Basin

Temperature and Precipitation Anomalies

Snowpack and Streamflow

Limited Frost Damage to Crops this Spring

Wet Conditions Cause Mixed Impacts

3-Month Precipitation and Temperature Outlooks

U.S. Seasonal Drought Outlook


Bathymetric Survey For Lakes Azuei And Enriquillo, Hispaniola, Michael Piasecki, Mahrokh Moknatian, Fred Moshary, Joseph Cleto, Yolanda Leon, Jorge Gonzalez, Daniel Comarazamy Jun 2016

Bathymetric Survey For Lakes Azuei And Enriquillo, Hispaniola, Michael Piasecki, Mahrokh Moknatian, Fred Moshary, Joseph Cleto, Yolanda Leon, Jorge Gonzalez, Daniel Comarazamy

Publications and Research

The two largest lakes on the Caribbean Island of Hispaniola, Lake Azuei in Haiti and Lake Enriquillo in the Dominican Republic, have experienced dramatic growth and surface area expansion over the past few years leading to severe flooding and loss of arable land around the lake perimeters. In order to better understand the reasons for this unprecedented rate of expansion and the resulting consequences a multi-disciplinary team comprised of researchers from Haiti, the DR, and the US have embarked on an extensive data collecting and hydrologic and climatological modeling campaign. While the sensor deployment entails stations that measure climatological data …


U.S. Drought Monitor, May 24, 2016, David Simeral May 2016

U.S. Drought Monitor, May 24, 2016, David Simeral

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for May 24, 2016 (5/24/16) 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, May 17, 2016, David Simeral May 2016

U.S. Drought Monitor, May 17, 2016, David Simeral

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for May 17, 2016 (5/17/16) 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.


The Cosmic-Ray Neutron Probe Method For Estimating Field Scale Soil Water Content: Advances And Applications, William A. Avery May 2016

The Cosmic-Ray Neutron Probe Method For Estimating Field Scale Soil Water Content: Advances And Applications, William A. Avery

School of Natural Resources: Dissertations, Theses, and Student Research

The need for accurate, real-time, reliable, and multi-scale soil water content (SWC) monitoring is critical for a multitude of scientific disciplines trying to understand and predict the earth’s terrestrial energy, water, and nutrient cycles. One promising technique to help meet this demand is fixed and roving cosmic-ray neutron probes (CRNP). However, the relationship between observed low-energy neutrons and SWC is affected by local soil and vegetation calibration parameters. This effect may be accounted for by a calibrated equation based on local soil type and the amount of standing biomass. However, determining the calibration parameters for this equation is labor and …


The Use Of Semi-Structured Interviews For The Characterisation Of Farmer Irrigation Practices, Jimmy O’Keeffe, Wouter Buytaert, Ana Mijic, N. Brozovic, Rajiv Sinha May 2016

The Use Of Semi-Structured Interviews For The Characterisation Of Farmer Irrigation Practices, Jimmy O’Keeffe, Wouter Buytaert, Ana Mijic, N. Brozovic, Rajiv Sinha

Daugherty Water for Food Global Institute: Faculty Publications

For the development of sustainable and realistic water security, generating information on the behaviours, characteristics, and drivers of users, as well as on the resource itself, is essential. In this paper we present a methodology for collecting qualitative and quantitative data on water use practices through semi-structured interviews. This approach facilitates the collection of detailed information on actors’ decisions in a convenient and cost-effective manner. Semi-structured interviews are organised around a topic guide, which helps lead the conversation in a standardised way while allowing sufficient opportunity for relevant issues to emerge. In addition, they can be used to obtain certain …


U.S. Drought Monitor, May 10, 2016, Brian Fuchs May 2016

U.S. Drought Monitor, May 10, 2016, Brian Fuchs

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for May 10, 2016 (5/10/16) 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.


Compost Land Management And Soil Carbon Sequestration, Kylene A. Hohman May 2016

Compost Land Management And Soil Carbon Sequestration, Kylene A. Hohman

Senior Honors Projects, 2010-2019

Extensive fossil fuel burning has released carbon dioxide into the atmosphere. Under proper ecological conditions plants convert atmospheric carbon dioxide into stable soil organic matter, a natural and efficient means of mitigating climate change. In the symbiotic relationship between mycorrhizae and plants, mycorrhizae provide plants with essential nutrients in exchange for carbon sugars leaked from the plants. Mycorrhizae convert carbon sugars to an exudate called glomalin, a protein that assists in developing soil aggregates composed of sand, silt, and clay. These aggregates, called humus, store carbon for hundreds of years under healthy ecological conditions. Compost prompts soil microbes to aerobically …


U.S. Drought Monitor, May 3, 2016, Brian Fuchs May 2016

U.S. Drought Monitor, May 3, 2016, Brian Fuchs

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for May 3, 2016 (5/3/16) 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.


Patterns And Sources Of Anthropogenic Contaminants In The Otter Creek Watershed, Madison County, Kentucky, Elijah J. Wolfe May 2016

Patterns And Sources Of Anthropogenic Contaminants In The Otter Creek Watershed, Madison County, Kentucky, Elijah J. Wolfe

EKU Faculty and Staff Scholarship

Stream systems are often affected by anthropogenic activities that affect water quality and stream ecosystems. Land use typically determines the type and quantity of anthropogenic contaminants entering natural waters. The Otter Creek watershed (170 km2; Madison County, Kentucky) consists predominantly of pasture and rural housing, with some cropland. The basin also receives runoff from the town of Richmond and a sewage treatment plant operates within the watershed. We measured concentrations of nutrients (phosphate, ammonium, nitrate) and fecal microbes to discover levels of anthropogenic contaminants affecting water quality and to identify contaminant sources.

We sampled 4 times in the …


Cockatoo Sands In The Victoria Highway And Carlton Hill Areas, East Kimberley: Hydrogeology, Aquifer Properties And Groundwater Chemistry, D L. Bennett, John Andrew Simons, Richard J. George Dr, Paul Raper May 2016

Cockatoo Sands In The Victoria Highway And Carlton Hill Areas, East Kimberley: Hydrogeology, Aquifer Properties And Groundwater Chemistry, D L. Bennett, John Andrew Simons, Richard J. George Dr, Paul Raper

Resource management technical reports

Cockatoo Sands are recognised as potentially suitable for irrigated agriculture because they are generally well drained and not subject to waterlogging or inundation. These characteristics allow them to be cultivated and prepared for planting various crops during the wet and dry seasons of northern Australia. Expanding agricultural production onto the Cockatoo Sands around Kununurra will increase opportunities for agriculture by increasing the overall scale of agriculture, allowing year-round agricultural enterprise, new crops and new market opportunities.

DAFWA has assessed the soil characteristics and agriculturally suitable areas of Cockatoo Sands in the Victoria Highway and Carlton Hill areas near Kununurra. Potential …


Hydrogeological Conceptual Model Of La Villa River Watershed, Republic Of Panama, Maria G. Castrellon Romero Apr 2016

Hydrogeological Conceptual Model Of La Villa River Watershed, Republic Of Panama, Maria G. Castrellon Romero

Honors Scholar Theses

Groundwater in Panama is a valuable and poorly understood resource. Its exploitation has increased 75% in the past decade, reaching a total value of 700,000 m3/day or 185 million gallons per day (MGD). Climate change has caused a lengthening of the dry season, which has reduced precipitation and streamflow, resulting in surface water scarcity during this period. Nevertheless, it has not been possible to determine the extent to which groundwater sources have been affected by these factors since systematic monitoring of groundwater levels has not been implemented in Panama. With support from National Institution of Drinking Water Supply …


Drought Forecasting Isn't Just About Water- To Get Smart We Need Health And Financial Data Too, Neville Crossman, Ian Overton, Jamie Hannaford, Kerstin Stahl, Kevin Collins, Mark D. Svoboda, Mike Acreman, Nicole Wall Apr 2016

Drought Forecasting Isn't Just About Water- To Get Smart We Need Health And Financial Data Too, Neville Crossman, Ian Overton, Jamie Hannaford, Kerstin Stahl, Kevin Collins, Mark D. Svoboda, Mike Acreman, Nicole Wall

National Drought Mitigation Center: Faculty Publications

The Millennium Drought taught Australians many lessons about living under extremely dry conditions – not just about how to conserve water, but also about human suffering.

In a drought, farmers find it more difficult to make an income, leading to mental health problems and raising the rate of male suicides. In the city, the impact is felt through water restrictions and more expensive infrastructure.

With very dry conditions returning to Tasmania, central Queensland and western Victoria, are we better prepared for the next big drought?

This is an issue not just for Australia, but across the world, from California, to …


Mapping Evapotranspiration With High-Resolution Aircraft Imagery Over Vineyards Using One- And Two-Source Modeling Schemes, Ting Xia, William P. Kustas, Martha C. Anderson, Joseph G. Alfieri, Feng Gao, Lynn Mckee, John H. Prueger, Hatim M.E. Geli, C.M.U. Neale, Luis Sanchez, Maria Mar Alsina, Zhongjing Wang Apr 2016

Mapping Evapotranspiration With High-Resolution Aircraft Imagery Over Vineyards Using One- And Two-Source Modeling Schemes, Ting Xia, William P. Kustas, Martha C. Anderson, Joseph G. Alfieri, Feng Gao, Lynn Mckee, John H. Prueger, Hatim M.E. Geli, C.M.U. Neale, Luis Sanchez, Maria Mar Alsina, Zhongjing Wang

Daugherty Water for Food Global Institute: Faculty Publications

Thermal and multispectral remote sensing data from low-altitude aircraft can provide high spatial resolution necessary for sub-field ( 10 m) and plant canopy (1 m) scale evapotranspiration (ET) monitoring. In this study, highresolution (sub-meter-scale) thermal infrared and multispectral shortwave data from aircraft are used to map ET over vineyards in central California with the two-source energy balance (TSEB) model and with a simple model having operational immediate capabilities called DATTUTDUT (Deriving Atmosphere Turbulent Transport Useful To Dummies Using Temperature). The latter uses contextual information within the image to scale between radiometric land surface temperature (TR) values representing hydrologic limits of …


U.S. Drought Monitor, April 19, 2016, Richard Tinker Apr 2016

U.S. Drought Monitor, April 19, 2016, Richard Tinker

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for April 19, 2016 (4/19/16) 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, April 12, 2016, Richard Tinker Apr 2016

U.S. Drought Monitor, April 12, 2016, Richard Tinker

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for April 12, 2016 (4/12/16) 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, April 5, 2016, Richard Tinker Apr 2016

U.S. Drought Monitor, April 5, 2016, Richard Tinker

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for April 5, 2016 (4/5/16) 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.


The Prairie Post Quarterly Newsletter Of The High Plains Regional Climate Center- April 2016, Natalie A. Umphlett, Bill Sorensen, Jamie Lahowetz, Crystal J. Stiles Apr 2016

The Prairie Post Quarterly Newsletter Of The High Plains Regional Climate Center- April 2016, Natalie A. Umphlett, Bill Sorensen, Jamie Lahowetz, Crystal J. Stiles

Prairie Post: Quarterly Newsletter of the High Plains Regional Climate Center

Inside this issue:

Message from the interim director........................................1

Staff spotlight...........................1

Weather-Ready Nation Ambassador Program............2

Tribal work highlight..............2

Product highlight....................3

Partnership spotlight.............3

AWDN information.................4

Update on regional climate conditions..................................4

Outreach/engagement.........5

Recent and upcoming travel and activities.............................6


Droughtscape, Spring 2016, National Drought Mitigation Center Apr 2016

Droughtscape, Spring 2016, National Drought Mitigation Center

DroughtScape: Quarterly Newsletter of the National Drought Mitigation Center (2007–2023)

Contents

Director’s report

First quarter drought summary

First quarter drought impacts

Drought Risk Management Research Center

Kenyan official visits

DrIVER eyes forecasting

Drought scenario exercise

Student projects

Drought tournament

Response and recovery guide

Drought Portal

Network of drought observers

Caribbean “writeshops”

Communications staff grows


Iron Mobility In Desert Sandstone Aquifers: The Possible Role Of Siderite, Lubna Al Azri, David Loope Apr 2016

Iron Mobility In Desert Sandstone Aquifers: The Possible Role Of Siderite, Lubna Al Azri, David Loope

UCARE: Research Products

Jordanians and a large number of refugees are drinking radiumcontaminated water from a sandstone aquifer. The problem is that this water passed through sandstone of the Disi Formation only after carbon dioxide and methane had bleached the sandstone, dissolving the Iron-oxide coatings and liberating heavy metals and radionuclides . The Iron that once coated the grains migrated to form Iron bands in the lower Um Ishrin Formation.

The major practical significance of this study involves water quality. The movement of Iron sandstone aquifers can drastically change groundwater chemistry; understanding how and when this movement takes place will help in locating …


U.S. Drought Monitor, March 29, 2016, Brad Rippey Mar 2016

U.S. Drought Monitor, March 29, 2016, Brad Rippey

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for March 29, 2016 (3/29/16) 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.


Effects Of Meteorological Conditions On Sulfur Dioxide Air Pollution In The North China Plain During Winter Of 2006–2015, Chase C. Calkins Mar 2016

Effects Of Meteorological Conditions On Sulfur Dioxide Air Pollution In The North China Plain During Winter Of 2006–2015, Chase C. Calkins

Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research

The last decade has seen frequent occurrences of severe air pollution episodes of high concentration in SO2 during winters in the North China Plain (NCP). Using satellite data from the Ozone Monitoring Instrument (OMI), chemistry transport model (GEOS-Chem) simulations, and National Center for Environmental Predication (NCEP) meteorological reanalyzes, this study examines meteorological and synoptic conditions associated with these air pollution episodes during winters of 2006-2015. OMI-based data suggest a large decrease (~30% in area average) of emission since 2010. Statistical analyzes show that meteorological conditions associated with the top 10% of OMI-based high days are found in average to …


U.S. Drought Monitor, March 22, 2016, Brad Rippey Mar 2016

U.S. Drought Monitor, March 22, 2016, Brad Rippey

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for March 22, 2016 (3/22/16) 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.


Estimating Evapotranspiration Of An Apple Orchard Using A Remote Sensing-Based Soil Water Balance, Magali Odi-Lara, Isidro Campos, C.M.U. Neale, Samuel Ortega-Farías, Carlos Poblete-Echeverria, Claudio Balbontín, Alfonso Calera Mar 2016

Estimating Evapotranspiration Of An Apple Orchard Using A Remote Sensing-Based Soil Water Balance, Magali Odi-Lara, Isidro Campos, C.M.U. Neale, Samuel Ortega-Farías, Carlos Poblete-Echeverria, Claudio Balbontín, Alfonso Calera

Daugherty Water for Food Global Institute: Faculty Publications

The main goal of this research was to estimate the actual evapotranspiration (ETc) of a drip-irrigated apple orchard located in the semi-arid region of Talca Valley (Chile) using a remote sensing-based soil water balance model. The methodology to estimate ETc is a modified version of the Food and Agriculture Organization of the United Nations (FAO) dual crop coefficient approach, in which the basal crop coefficient (Kcb) was derived from the soil adjusted vegetation index (SAVI) calculated from satellite images and incorporated into a daily soil water balance in the root zone. A linear relationship between the Kcb and SAVI was …


U.S. Drought Monitor, March 15, 2016, Richard R. Heim Jr. Mar 2016

U.S. Drought Monitor, March 15, 2016, Richard R. Heim Jr.

United States Agricultural Commodities in Drought Archive

Drought map of the United States for March 15, 2016 (3/15/16) plus: United States crop areas experiencing drought (map), the approximate percentage of crop located in drought by state (bar graph), and the percentage of crop area located in drought during past 52 weeks (line graph) for corn, soybeans, hay, cattle, and winter wheat.


U.S. Drought Monitor, March 8, 2016, David Miskus Mar 2016

U.S. Drought Monitor, March 8, 2016, David Miskus

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for March 8, 2016 (3/8/16) 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.


Umphlett Qci March 2016, Natalie Umphlett Mar 2016

Umphlett Qci March 2016, Natalie Umphlett

High Plains Regional Climate Center: Staff Publications

Highlights for the Basin

Temperature and Precipitation Anomalies

Vegetation Conditions

Early Signs of Spring

Winter Wheat Breaks Dormancy

3-Month Precipitation and Temperature Outlooks

Percent of Average Precipitation: Strong El Niños


U.S. Drought Monitor, March 1, 2016, David Miskus Mar 2016

U.S. Drought Monitor, March 1, 2016, David Miskus

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for March 1, 2016 (3/1/16) 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.


Patterns And Sources Of Anthropogenic Contaminants In The Otter Creek Watershed, Madison County, Kentucky, Elijah D. Wolfe, Walter S. Borowski, Jacob L. Robin Mar 2016

Patterns And Sources Of Anthropogenic Contaminants In The Otter Creek Watershed, Madison County, Kentucky, Elijah D. Wolfe, Walter S. Borowski, Jacob L. Robin

EKU Faculty and Staff Scholarship

Stream systems are often affected by anthropogenic contaminants that affect water quality and stream ecosystems. Land use determines the type and quantity of contaminants present in natural waters. The Otter Creek watershed (170 km2; Madison County, Kentucky) consists predominantly of pasture and rural housing, with some cropland. The basin also receives runoff from the town of Richmond and a sewage treatment plant operates within the watershed. We measured concentrations of nutrients (phosphate, ammonium, nitrate) and fecal microbes to discover levels of anthropogenic contaminants affecting water quality and to identify contaminant sources.

We sampled 4 times in the summer …


U.S. Drought Monitor, February 23, 2016, Eric Luebehusen Feb 2016

U.S. Drought Monitor, February 23, 2016, Eric Luebehusen

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for February 23, 2016 (2/23/16) 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.