A Historical Perspective On Precipitation Drought Severity And Streamflow In Texas During 1951 56 And 2011
DOWNLOAD
Download A Historical Perspective On Precipitation Drought Severity And Streamflow In Texas During 1951 56 And 2011 PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get A Historical Perspective On Precipitation Drought Severity And Streamflow In Texas During 1951 56 And 2011 book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
A Historical Perspective On Precipitation Drought Severity And Streamflow In Texas During 1951 56 And 2011
DOWNLOAD
Author : Karl E. Winters
language : en
Publisher:
Release Date : 2013
A Historical Perspective On Precipitation Drought Severity And Streamflow In Texas During 1951 56 And 2011 written by Karl E. Winters and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Droughts categories.
Texas Drought
DOWNLOAD
Author : Robert F. Riggio
language : en
Publisher:
Release Date : 1987
Texas Drought written by Robert F. Riggio and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Drought forecasting categories.
Drought Frequency Intensity And Duration
DOWNLOAD
Author : A. Vaughn Havens
language : en
Publisher:
Release Date : 1968
Drought Frequency Intensity And Duration written by A. Vaughn Havens and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Droughts categories.
Creating A New Index
DOWNLOAD
Author : Jessica Leigh Sackett
language : en
Publisher:
Release Date : 2002
Creating A New Index written by Jessica Leigh Sackett and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Drought forecasting categories.
Deciphering Changes In Rainfall Events And The Consequences Over Texas Under Global Warming
DOWNLOAD
Author : Sabiha Tabassum
language : en
Publisher:
Release Date : 2023
Deciphering Changes In Rainfall Events And The Consequences Over Texas Under Global Warming written by Sabiha Tabassum and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023 with categories.
The far-reaching impacts of global warming on precipitation patterns warrant our unwavering attention. As the atmosphere heats up, heightened water vapor levels lead to more intense and frequent severe weather, exacerbating the risk of floods. Conversely, shifts in rainfall distribution could incite prolonged droughts and diminished water access in specific regions. Given the societal and economic repercussions of these extremes, comprehending their evolving nature becomes paramount. This study employs General Circulation Models (GCMs) from the Coupled Model Intercomparison Project Phase 6 (CMIP6) to explore shifts in rainfall and their consequences for Texas amid global warming. In Chapter 2, I meticulously evaluate the performance of the CMIP6 GCMs in representing the observed rainfall characteristics over Texas. Subsequently, I scrutinize projections from the most accurate GCMs to estimate changes in extreme rainfall events. The analysis reveals a more pronounced increase in the annual maximum 5-day rainfall (Rx5day) in the near-future (2021-2050) than long-term (2071-2100) when compared to the historical period (1985-2014). In Chapter 3, I use a data driven approach to develop a statistical relationship between flood height at critical infrastructures and precipitation during historical tropical cyclones (TC) in Texas. This relationship is then extrapolated to anticipate future flood risks based on projected extreme rainfall. The findings illuminate heightened vulnerabilities to damage and disruptions from future TC-induced floods in specific areas. In Chapter 4, I assess prospective changes in streamflow within the Colorado River Basin (CRB) using GCMs selected based on their ability to represent the observed climatic characteristics over the CRB. The results signal substantial alternations in CRB streamflow and an escalated probability of extreme flow occurrences. Cumulatively, this dissertation underscores the urgency for adaptable strategies to confront the intricate challenges stemming from evolving Texas rainfall patterns in a warming climate
Characterization Of Drought In Texas Using Nldas Soil Moisture Data
DOWNLOAD
Author : John R. Sullivan (Jr.)
language : en
Publisher:
Release Date : 2013
Characterization Of Drought In Texas Using Nldas Soil Moisture Data written by John R. Sullivan (Jr.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
From June to August 2011, Texas experienced the hottest summer ever recorded in the history of the United States, and the state suffered a water shortage that made its vulnerability to drought painfully plain. This disaster sparked new interest in methods of defining drought severity, especially with regard to the variation of soil moisture levels. This thesis assesses the suitability of information from the North American Land Data Assimilation System (NLDAS), an assemblage of land surface models forced with observations data, for quantifying soil moisture levels in Texas. The potential for combining NLDAS data with the Soil Survey Geographic (SSURGO) Database's available water capacity data is explored. It is discovered that because NLDAS is a hydrological model and SSURGO an agricultural dataset, they employ different definitions of soil moisture storage. Moreover, the temporal variation of soil moisture levels in the SSURGO polygons cannot be inferred from NLDAS data due to the vastly different spatial scales of the two datasets. A relative measure of soil saturation from 0-100% is developed instead and determined to be a more useful indicator of drought than the soil moisture level itself. Calculated solely from NLDAS data, it is used to map the severity of drought in Texas, with the results displayed at the county scale. The temporal variation in soil moisture storage across the state is compared with variations in the gravity anomaly measured by NASA's Gravity Recovery and Climate Experiment (GRACE) satellites and variations in Texas surface water reservoir levels, both of which are physical measurements of water storage changes. This analysis suggests that the NLDAS data, which is derived from a land surface model, accurately describes subsurface moisture variations. Also, the GRACE gravity anomaly data reveals that during the 2011 drought, the total water storage in Texas was approximately 100 cubic kilometers less than normal. NLDAS data indicates that more than 50% of this deficit was due to losses from the top one meter of the state's soils.
Investigating The Relationships Between Remotely Sensed And In Situ Drought Indicators To Understand Streamflow Discharge Anomalies
DOWNLOAD
Author : Devon Ali Bandad
language : en
Publisher:
Release Date : 2020
Investigating The Relationships Between Remotely Sensed And In Situ Drought Indicators To Understand Streamflow Discharge Anomalies written by Devon Ali Bandad and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
Predicting drought and streamflow are important aspects of water management to help mitigate the effects that a drought has on the environment and the people involved. The goals of this research are to assess remote sensing indicators and their ability to monitor drought and streamflow changes compared to in situ indicators in order to better estimate streamflow changes in times of drought in areas and at times without station-based data. Using in situ drought indicators such as station-based Palmer Drought Severity Index (PDSI) and Standardized Precipitation Index (SPI) helps water managers identify drought severity based on various environmental factors measured on a regular basis using station-based data. Remote sensing indicators on the other hand use satellite inputs to monitor such trends as vegetation coverage at a higher spatial resolution than an in situ index would. Remote sensing information is more readily available than most observed environmental information across the globe. The study region is located in central United States in the MINK (Missouri, Iowa, Nebraska, and Kansas) region. Data for the growing period (April-September) from 2003-2017 were used. The region varies greatly from east to west in both land cover and average precipitation amount (318 - 1397 mm per year) as the region becomes drier and changes from forests in the southeast to farmland and prairie in the west. The first part of the study evaluated various drought indices and their relationships with streamflow. The in situ indices evaluated include SPI and PDSI, which were available on a monthly basis for each climate division in the MINK region. The remote sensing indices include the Vegetation Condition Index (VCI) and the Soil Moisture Condition Index (SMCI). Each index has different data inputs, such a precipitation (PDSI and SPI) and temperature (PDSI) for the in situ indices and vegetation greenness (VCI) and soil moisture (SMCI) for the remote sensing indices. The indices were ultimately compared both spatially and temporally (annual basis) to streamflow in the form of discharge anomalies (PDA). In the second part of this study, analysis focused on how relationships between the remote sensing indices changed as land cover varies over the MINK region. Overall, results suggest that the in situ indices (PDSI and SPI) can estimate PDA changes (on an annual scale), while SMCI performed better than VCI overall though not as well as PDSI or SPI. The findings from this study have the potential to assist water managers and policy makers to better understand streamflow changes and increase drought preparedness.
Drought Over The Past Century In Texas And New Mexico
DOWNLOAD
Author : Douglas Brent McRoberts
language : en
Publisher:
Release Date : 2008
Drought Over The Past Century In Texas And New Mexico written by Douglas Brent McRoberts and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
This research looks at the past century of Texas and New Mexico climate in order to create datasets sufficient for documenting climatic variations. Inhomogeneities in climate records are defined as variations in climatic records caused by factors other than weather and climate. While there are indirect methodologies for inferring climate records such as tree rings and ice cores, it is the instrumental network that constitutes the most spatially and temporally complete record of land surface climate since the onset of the Industrial Revolution. A statistical method by Sun and Peterson (2005a) called Inverse Weighting of Square Distance (IWSD) will be used to reduce the inhomogeneities in climate records. The National Weather Service Cooperative Observer Program (COOP) network of stations will be used for this analysis. A subset of the extensive COOP network, called the United States Historical Climate Network (USHCN), will be used as a foundation for this study. The analysis and resulting datasets from this climatic study show precipitation trends and periods of drought and will be useful for decisions regarding future policies on drought. The result of the interpolation process was the creation of several COOP and USHCN datasets. Several of the datasets were investigated to determine the spatial characteristics of precipitation over the 20th century in Texas and New Mexico. The datasets are in good agreement that the most severe drought period of the 20th century in Texas and New Mexico was in the 1950s. The frequency of pluvial periods was higher toward the end of the 20th century, with most USHCN stations showing an increasing trend when a linear regression analysis was done on each station's precipitation data.
Characteristics Of 20th Century Drought In The United States At Multiple Time Scales
DOWNLOAD
Author : Daniel C. Edwards
language : en
Publisher:
Release Date : 1997-05-01
Characteristics Of 20th Century Drought In The United States At Multiple Time Scales written by Daniel C. Edwards and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997-05-01 with Drought forecasting categories.
The purpose of this study is to define the occurrence and variability of drought in the United States in order to furnish climatologists and drought mitigation planners with information on how to put current drought into historical perspective. The opposite of drought is a period of anomalously wet conditions. Analyses of both drought and wet periods on national and regional scales are provided. Analysis of drought and wet periods in terms of areal coverage, intensity, duration, and variability at these different space and time scales provides valuable insight not only into the historical perspective of anomalously dry and wet conditions, but also into the long-term variation of climate in the United States.
Effects Of Drought On Climates In Texas
DOWNLOAD
Author : Katie Lynn Born
language : en
Publisher:
Release Date : 2016
Effects Of Drought On Climates In Texas written by Katie Lynn Born and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
Drought is a growing global concern with severe ramifications for humanity. Texas is one of many places that faces recurring severe droughts, threatening the livelihood of its people. Within the bounds of Texas there are many different climates, and drought can effect these climates differently. The south east edge of the state tend to have a more humid temperate climate, whereas to the north west it becomes hot and arid. Within one state, the climate goes from subtropical to desert. This opens up the state to a lot of variability as to water supply. This Master's Report investigates the effects that drought has on the varied climates within Texas. Five areas in Texas were chosen to represent the most distinctive climatic shifts. Several hydrologic variables area accessed between regions and drought severity. The hydrologic variables examined are the 2-m above ground temperature, evapotranspiration, latent heat flux, sensible heat flux, net longwave radiation flux, net shortwave radiation flux, total hourly precipitation, and surface runoff. The scope of the analysis is limited to period of January 2000 to January 2013. Two one month periods were selected to highlight changes under dry conditions compared to normal to wet conditions; July 2007 and July 2011, respectively. In all of the areas examined, the earth was shown to be parched and dry after periods of less than average precipitation and more willing to take in water than leave it to be surface runoff. An initial investigation into the climates of the five areas showed that the temperatures in the more southeastern regions were more dramatically affected by the occurrence of drought. When drought came along to these southeastern regions, it transformed the climate into something more similar to that typically found in the northwestern regions. The more humid areas to the south east were consistently more dramatically affected by the drought than the arid regions to the north west. The more arid climates started out more similar to that of a drought ridden zone, leaving less room to change. However, all of the areas are significantly impacted by drought through a declining water supply.