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2018

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Full-Text Articles in Physical and Environmental Geography

Replication Data For "Can You Take The Heat" Heat-Health Symptoms Are Associated With Protective Behaviors, Emily D. Esplin, Jennifer R. Marlon, Anthony Leiserowitz, Peter D. Howe Dec 2018

Replication Data For "Can You Take The Heat" Heat-Health Symptoms Are Associated With Protective Behaviors, Emily D. Esplin, Jennifer R. Marlon, Anthony Leiserowitz, Peter D. Howe

Browse all Datasets

This dataset contains survey data of the U.S. adult population that includes self-reported heat-health symptoms, protective behaviors implemented during heat waves, and perceptions of how a heat wave would affect personal health and the health of others. Temperature estimates of what participants may have experienced the summer prior to the survey are included at the county level. Demographic variables and spatial scales by region, state, and county are also included.


Characterizing Temperature Variability States Across Southern South America And Associated Synoptic-Scale Meteorological Patterns, Judah Adam Detzer Dec 2018

Characterizing Temperature Variability States Across Southern South America And Associated Synoptic-Scale Meteorological Patterns, Judah Adam Detzer

Dissertations and Theses

The aim of this thesis is to understand spatiotemporal temperature variability in southern South America by identifying overarching temperature variability states and their associated synoptic-scale meteorological patterns. Further, the temporal frequency of occurrence of those temperature variability states is investigated as is the role of recurrent low-frequency modes of climate variability (El Niño Southern Oscillation and the Southern Annular Mode) on temperature variability. K-means cluster analysis is used to group all months during the period 1980-2015 into four primary categories for summer and winter separately. Monthly maps of temperature anomalies are provided as input to the k-means algorithm and the …


Investigating Smoke Aerosol Emission Coefficients Using Modis Active Fire And Aerosol Products – A Case Study In The Conus And Indonesia, Xiaoman Lu, Xiaoyang Zhang, Fangjun Li, Mark Cochrane Dec 2018

Investigating Smoke Aerosol Emission Coefficients Using Modis Active Fire And Aerosol Products – A Case Study In The Conus And Indonesia, Xiaoman Lu, Xiaoyang Zhang, Fangjun Li, Mark Cochrane

Global Land Surface Season Data Sets

This data set is in relation to the paper of the same title, which has been submitted to the Journal of Geophysical Research: Biogeosciences.

Instructions for viewing the data in “Readme.txt”





Keeping Pace With Relative Sea Level Rise: Marsh Platform Monitoring Shows Minimal Sediment Deficit Along The Louisiana Coast, Kelly Marie Sanks Dec 2018

Keeping Pace With Relative Sea Level Rise: Marsh Platform Monitoring Shows Minimal Sediment Deficit Along The Louisiana Coast, Kelly Marie Sanks

Graduate Theses and Dissertations

Recent reports estimate that the marshes of the Mississippi Delta receive just 30% of the sediment necessary to sustain current land area1. An extensive monitoring campaign by the USGS and LCPRA provides direct measurements of sediment accumulation, subsidence rates, and deposit characteristics along the coast over the past 10 years2, allowing us to directly evaluate this sediment balance. By interpolating bulk density, organic fraction, and vertical accretion rates from 273 sites, a direct measurement of organic and inorganic sediment accumulation can be made. Results show that a total of 82 MT/year of sediment is delivered to the coast. Using a …


Timing And Formation Of Linear Dunes South Of The Niobrara River Valley, North-Central Nebraska Sand Hills, Ashley K. Larsen Dec 2018

Timing And Formation Of Linear Dunes South Of The Niobrara River Valley, North-Central Nebraska Sand Hills, Ashley K. Larsen

Department of Geography: Dissertations, Theses, and Student Research

The Nebraska Sand Hills is a vast (7500 square kilometer) area of grass-stabilized sand dunes. Larger dunes in the Nebraska Sand Hills formed primarily during the Late Pleistocene, but many underwent widespread reactivation during the Holocene. Recent Optically Stimulated Luminescence (OSL) dating indicates that the last major phase of reactivation in the Sand Hills was during the Medieval Warm Period, approximately 800 years ago. Nevertheless, many questions about the evolution of the dunes remain unanswered, particularly regarding the formation of linear dunes in portions of the Sand Hills.

This study seeks to understand more about the formation of linear dunes …


Using Redundant Primer Sets To Detect Multiple Native Alaskan Fish Species From Environmental Dna, Damian Menning, Trey Simmons, Sandra Talbot Nov 2018

Using Redundant Primer Sets To Detect Multiple Native Alaskan Fish Species From Environmental Dna, Damian Menning, Trey Simmons, Sandra Talbot

United States National Park Service: Publications

Accurate and timely data regarding freshwater fish communities is important for informed decision-making by local, state, tribal, and federal land and resource managers; however, conducting traditional gear-based fish surveys can be an expensive and time-consuming process, particularly in remote areas, like those that characterize much of Alaska. To help address this challenge, we developed and tested five multi-species environmental DNA (eDNA) primer sets for the simultaneous detection of up to 37 target fish species in a single sample. Using these primer sets can reduce the cost and time needed to perform future studies of fish communities. Our results comparing multiple …


Niobrara National Scenic River, Socioeconomic Monitoring Pilot Implementation, Summer 2016, Resource Systems Group Nov 2018

Niobrara National Scenic River, Socioeconomic Monitoring Pilot Implementation, Summer 2016, Resource Systems Group

United States National Park Service: Publications

Executive Summary

This report describes the results of a visitor study at Niobrara National Scenic River (NSR) conducted from July 15 through July 24, 2016. During the sampling period, 253 visitor groups were contacted to participate in the survey. Of those groups, 217 agreed to participate in the study by accepting a mail-back survey packet. Questionnaires were completed and returned by 110 visitor groups, resulting in a completion rate of 51% among those visitor groups that agreed to participate in the study and an overall response rate of 43% for the study.

 This report profiles a systematic random sample …


Quality Assurance Plan For Monitoring White-Tailed Deer In The Heartland Inventory And Monitoring Network, United States National Park Service, Heartland Inventory And Monitoring Network Nov 2018

Quality Assurance Plan For Monitoring White-Tailed Deer In The Heartland Inventory And Monitoring Network, United States National Park Service, Heartland Inventory And Monitoring Network

United States National Park Service: Publications

Abstract

In accordance with guidelines set forth by the National Park Service Inventory and Monitoring Division, a quality-assurance plan has been created for use by the Heartland Inventory and Monitoring Network in the implementation of the White-tailed Deer Monitoring Protocol (HTLN 2018). This quality-assurance plan documents the standards, policies, and procedures used by the Heartland Network for activities related to the collection, processing, storage, analysis, and publication of monitoring data. The policies and procedures documented in this quality-assurance plan complement the quality-assurance plans for other monitoring activities conducted by the Heartland Network and supplement the National Inventory and Monitoring Division …


Mackinder And The Arctic's Emerging Geopolitics: Recommendations For The U.S. And Its Nato Allies, Bert Chapman Oct 2018

Mackinder And The Arctic's Emerging Geopolitics: Recommendations For The U.S. And Its Nato Allies, Bert Chapman

Libraries Faculty and Staff Presentations

This presentation shows how Halford Mackinder (1861-1947) described Canada and the Arctic region in his geopolitical writings. It goes on to stress how the Arctic is becoming increasingly important in international geopolitical policymaking due to its significant oil and natural gas resources, how warming temperatures are increasing international access to its waters, and the how countries as diverse as Canada, China, Russia, and the U.S. see the Arctic region in their strategic policymaking. It concludes by stressing that the Arctic can no longer be viewed as a region immune from international conflict and presents recommendations for the U.S. and its …


The Effect Of Sub-Facet Scale Geometry On Vertical Facet Temperatures In Urban Street Canyons, Rainer V.J. Hilland Oct 2018

The Effect Of Sub-Facet Scale Geometry On Vertical Facet Temperatures In Urban Street Canyons, Rainer V.J. Hilland

Electronic Thesis and Dissertation Repository

Surface temperature plays a key role in many micro-scale urban processes. Walls comprise a significant percentage of the urban surface, yet are under-represented by many methods of thermal remote sensing and not considered in detail by micro-scale surface temperature mod- els. This thesis presents a novel method of mobile thermal observation performed in urban street canyons in London, ON that uses a thermal imager as well as a visual spectrum camera to provide dense spatial and temporal resolution of micro-scale wall temperature distributions. Images are manually classified by a series of nominal variables and the resulting data set discusses the …


Environmental Governance And The Global South, Jeffrey J. Minneti Oct 2018

Environmental Governance And The Global South, Jeffrey J. Minneti

William & Mary Environmental Law and Policy Review

Over the last several decades, efforts to regulate the environment through traditional public law at national and international levels have stalled. In contrast, private environmental governance has flourished as nongovernmental entities have engaged in standard setting and assessment practices traditionally left to public government. This Article observes that while private governance of producers’ environmental product claims has grown tremendously in recent years, the vast majority of the governance originates in the global North and thrusts the global North’s economic and environmental agenda into the global South. In light of recent empirical studies of the effectiveness of such governance, the Article …


Balance And Imbalance: The Necessity Of Natural Disasters In Balinese Hinduism, Lorin Foster Demuth Oct 2018

Balance And Imbalance: The Necessity Of Natural Disasters In Balinese Hinduism, Lorin Foster Demuth

Independent Study Project (ISP) Collection

No abstract provided.


Sources Of Contaminated Flood Sediments In A Rural–Urban Catchment: Johnson Creek, Oregon, Heejun Chang, Deonie Allen, Jennifer L. Morse, Janardan Mainali Oct 2018

Sources Of Contaminated Flood Sediments In A Rural–Urban Catchment: Johnson Creek, Oregon, Heejun Chang, Deonie Allen, Jennifer L. Morse, Janardan Mainali

Geography Faculty Publications and Presentations

This study investigated the delivery of contaminated sediments to the channel network by urban drainage systems in Johnson Creek in Oregon, USA. Concentrations of five heavy metal concentrations measured in 136 samples collected from 37 stormwater outfalls and 99 bed sampling points were analysed. While concentrations of zinc, cadmium and lead increased with distance downstream in Johnson Creek, this was not the case for chromium and copper. Zinc, copper, and cadmium concentrations in outfalls were significantly higher than those in the stream bed, indicating that stormwater runoff is responsible for delivering contaminated sediments to Johnson Creek. Zinc concentrations in outfalls …


Evolution Of Grain Size Distributions And Bed Mobility During Hydrographs In Gravel-Bed Braided Rivers, Sarah Peirce, Peter Ashmore, Pauline Leduc Sep 2018

Evolution Of Grain Size Distributions And Bed Mobility During Hydrographs In Gravel-Bed Braided Rivers, Sarah Peirce, Peter Ashmore, Pauline Leduc

Geography & Environment Publications

Evolution of bed material mobility and bedload grain size distributions under a range of discharges is rarely observed in braiding in gravel-bed rivers. Yet, the changing of bedload grain size distributions with discharge is expected to be different from laterally stable, threshold, channels on which most gravel bedload theory and observation are based. Here, simultaneous observations of flow, bedload transport rate, and morphological change were made in a physical model of a gravel-bed braided river to document the evolution of grain size distributions and bed mobility over three experimental event hydrographs. Bedload transport rate and grain size distributions were measured …


The Slave Trade Route: A Regional And Local Development Catalyst, Chukwunyere Ugochukwu Sep 2018

The Slave Trade Route: A Regional And Local Development Catalyst, Chukwunyere Ugochukwu

Geography and Planning Faculty Publications

The conservation of and focus on slave export points turned tourist monuments in Cape Coast and Elmina, Ghana, are incomplete without linkages to other complicit places in the interior that together completes the chain of darkness, the trade in humans along the Atlantic coast of Ghana, as well as in the interior. Completed, it will highlight the infrastructure of the slave business, the domestic, as well as the Trans-Atlantic slave trade. When the chain (route) of the different complicit communities in the interior to these export monuments along the Atlantic coast is conserved, it shall herald a completeness to the …


Disasters Fast And Slow: The Temporality Of Hazards In Environmental History, Fiona Williamson, Chris Courtney Sep 2018

Disasters Fast And Slow: The Temporality Of Hazards In Environmental History, Fiona Williamson, Chris Courtney

Research Collection School of Social Sciences

Popular representations of disasters tend to focus upon dramatic moments of chaos. They envision panicked communities desperately scrambling for safety as earthquakes reduce cities to rubble or lava turns villages to ashes. Yet disasters actually unfold on numerous temporal scales. Media reports tend to reduce disasters to discrete events, initiated on the shallow causal timescale of a meteorological fluctuation or seismic disruption. Social scientists, by contrast, have often sought to emphasise the processual nature of disasters—embedding causality in the deeper timescale of a community, in which risk and vulnerability build over months or years.2 Environmental historians elongate causality even further, …


Malaya's Greatest Menace? Slow-Onset Disaster And The Muddy Politics Of British Malaya, C. 1900–50, Fiona Williamson Sep 2018

Malaya's Greatest Menace? Slow-Onset Disaster And The Muddy Politics Of British Malaya, C. 1900–50, Fiona Williamson

Research Collection School of Social Sciences

In 1948, a chilling statement from British Malaya’s Director of Agriculture, F. Burnett, made headline news. According to Burnett, unchecked soil erosion across hillside Malaya would soon render the country’s precious agricultural land infertile. Erosion had worsened considerably after the 1880s due to widespread, indiscriminate agricultural and industrial clearing. By the 1920s, it had become a sizeable socioeconomic and environmental issue, thought also to contribute to the scale and intensity of flooding and the likelihood of dangerous landslips. The British Government raised a series of empire-wide inquiries across the first half of the twentieth century, tied to an emerging global …


Yardwork: A Biography Of An Urban Place By Daniel Coleman, Vivian M. Hansen Aug 2018

Yardwork: A Biography Of An Urban Place By Daniel Coleman, Vivian M. Hansen

The Goose

Review of Daniel Coleman's Yardwork: A Biography of an Urban Place.


Nature, Place, And Story: Rethinking Historic Sites In Canada By Claire Campbell, Emma K. Morgan-Thorp Aug 2018

Nature, Place, And Story: Rethinking Historic Sites In Canada By Claire Campbell, Emma K. Morgan-Thorp

The Goose

Review of Claire Campbell's Nature, Place, and Story: Rethinking Historic Sites in Canada.


Response Of The Downstream Braided Channel To Zhikong Reservoir On Lhasa River, Peng Gao, Xinyu Wu, Zhiwei Li, Cao Huang, Tiesong Hu Aug 2018

Response Of The Downstream Braided Channel To Zhikong Reservoir On Lhasa River, Peng Gao, Xinyu Wu, Zhiwei Li, Cao Huang, Tiesong Hu

Geography and the Environment - All Scholarship

Lhasa River basin is situated in the southern part of the Qinghai-Tibet Plateau, which is the most important region of economic and social development in Tibet. In order to efficiently utilize water resources in the basin and ease the shortage of regional electric power supply, Zhikong Reservoir was built in the upstream reach of the Lhasa River in 2006. Impoundment of this reservoir evidently affected the morphology and stability of the downstream braided channel below the dam. Yet, little is known about the complex responses of the downstream braided channel to the Zhikong Dam. Landsat images in the 2000–2016 period, …


Landscape Drivers Of Recent Fire Activity (2001- 2017) In South-Central Chile, David B. Mcwethy, Aníbal Pauchard, Rafeal García, Andrés Holz, Mauro E. Gonzales, Thomas T. Veblen, Julian Stahl, Bryce Currey Aug 2018

Landscape Drivers Of Recent Fire Activity (2001- 2017) In South-Central Chile, David B. Mcwethy, Aníbal Pauchard, Rafeal García, Andrés Holz, Mauro E. Gonzales, Thomas T. Veblen, Julian Stahl, Bryce Currey

Geography Faculty Publications and Presentations

In recent decades large fires have affected communities throughout central and southern Chile with great social and ecological consequences. Despite this high fire activity, the controls and drivers and the spatiotemporal pattern of fires are not well understood. To identify the large-scale trends and drivers of recent fire activity across six regions in south-central Chile (~32–40° S Latitude) we evaluated MODIS satellite-derived fire detections and compared this data with Chilean Forest Service records for the period 2001–2017. MODIS burned area estimates provide a spatially and temporally comprehensive record of fire activity across an important bioclimatic transition zone between dry Mediterranean …


Speculations On The Postnatural: Restoration, Accumulation, And Sacrifice At The Salton Sea, Alida Cantor, Sarah Knuth Aug 2018

Speculations On The Postnatural: Restoration, Accumulation, And Sacrifice At The Salton Sea, Alida Cantor, Sarah Knuth

Geography Faculty Publications and Presentations

Using a regional political ecology lens, this paper explores emerging geographies and politics of a “postnatural” ecomodernist turn in mainstream environmentalism. We examine the unfolding case of ecological restoration and renewable energy development at Southern California’s Salton Sea. Ambitious proposals to restore the massive, increasingly degraded lake (and finance restoration) by reengineering it as a hub for geothermal energy generation and hightech green industry hinge upon the ambiguity and malleability of restoration in an environment long classified as postnatural. These plans coincide with a broader rush on renewable energy sites in the California desert, and mounting conflicts over water and …


Estimation Of The Relationship Between Satellite-Derived Vegetation Indices And Live Fuel Moisture Towards Wildfire Risk In Southern California, Kristen Whitney, Seung Hee Kim, Shenyue Jia, Menas Kafatos Aug 2018

Estimation Of The Relationship Between Satellite-Derived Vegetation Indices And Live Fuel Moisture Towards Wildfire Risk In Southern California, Kristen Whitney, Seung Hee Kim, Shenyue Jia, Menas Kafatos

Mathematics, Physics, and Computer Science Faculty Articles and Research

Southern California possesses a Mediterranean climate having semi-arid to arid characteristics and contains shrubland areas at high risk to wildfire. To assess wildfire danger, fire agencies have been monitoring the moisture of vegetation, called live fuel moisture (LFM), using field-based sampling. Unfortunately, spatial and temporal resolution of live fuel moisture data are significantly limited because sampling is labor intensive. Remote sensing satellite data has been used to monitor vegetation moisture content and health of shrublands. Therefore, a potential approach to overcome the limitations of manual measurements of live fuel moisture is to use vegetation indices (VIs) derived from satellite data. …


The Impact Of World War One On The Forests And Soils Of Europe, Drew Heiderscheidt Jul 2018

The Impact Of World War One On The Forests And Soils Of Europe, Drew Heiderscheidt

Ursidae: The Undergraduate Research Journal at the University of Northern Colorado

The First World War was one of the deadliest conflicts in human history thus far. With the human toll being over eight million deaths, and millions more wounded, and as such it has taken hold in peoples imaginations for over a hundred years. However, one overlooked impact of the war is the environmental impact it had. The forests of Europe were significantly changed, going from being diverse ecosystems pre-war to monocultures after the war, dominated by single species of trees. The soil was also affected, more heavily in some places, becoming contaminated with heavy metals, as well as becoming entirely …


Hydraulic Modeling For The Assessment Of Flood Hazard Using The Iber Software In The Amarante Urban Center, Márcia Martins, Alberto Gomes, Pedro Pinto Santos Jul 2018

Hydraulic Modeling For The Assessment Of Flood Hazard Using The Iber Software In The Amarante Urban Center, Márcia Martins, Alberto Gomes, Pedro Pinto Santos

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

Recently, there is an availability increase of hydraulic modeling software that allows the analysis and definition of several hydraulic variables, namely water depth and flow velocity, which are important parameters for the assessment and management of flood-prone areas. The growing use of this software is related with the fact of being Free and Open Source Software (FOSS), making possible the understanding of different approaches and providing most reliable and accurate results of flood-prone areas according different return periods.

In this study it was used the freely hydraulic software Iber, a tool for two-dimensional modeling of water flow in rivers and …


Non-Gnss Smartphone Pedestrian Navigation Using Barometric Elevation And Digital Map-Matching, Daniel Broyles, Kyle J. Kauffman, John F. Raquet, Piotr Smagowski Jul 2018

Non-Gnss Smartphone Pedestrian Navigation Using Barometric Elevation And Digital Map-Matching, Daniel Broyles, Kyle J. Kauffman, John F. Raquet, Piotr Smagowski

Faculty Publications

Pedestrian navigation in outdoor environments where global navigation satellite systems (GNSS) are unavailable is a challenging problem. Existing technologies that have attempted to address this problemoften require external reference signals or specialized hardware, the extra size,weight, power, and cost of which are unsuitable for many applications. This article presents a real-time, self-contained outdoor navigation application that uses only the existing sensors on a smartphone in conjunction with a preloaded digital elevation map. The core algorithm implements a particle filter, which fuses sensor data with a stochastic pedestrian motion model to predict the user’s position. The smartphone’s barometric elevation is then …


Forewarned Is Forearmed: Review Of Curbing Catastrophe: Natural Hazards And Risk Reduction In The Modern World By Timothy H. Dixon (2017), Jason Makansi Jul 2018

Forewarned Is Forearmed: Review Of Curbing Catastrophe: Natural Hazards And Risk Reduction In The Modern World By Timothy H. Dixon (2017), Jason Makansi

Numeracy

Timothy H. Dixon. 2017. Curbing Catastrophe: Natural Hazards and Risk Reduction in the Modern World. (New York, NY: Cambridge University Press) 300 pp. ISBN 978-1108113663.

Curbing Catastrophe for the most part lives up to what is claimed in the foreword: “…a compelling account of recent and historical disasters, both natural and human-caused, drawing on common themes and providing a holistic understanding of hazards, disasters, and mitigation for anyone interested in this important and topical subject.” This is a pretty thorough treatment of an extraordinarily complex subject, and the gaps identified in this review should be considered explications more than …


Natural Resource Condition Assessment, Scotts Bluff National Monument, Reilly R. Dibner, Nicole Korfanta, Gary Beauvais, Jonathan Bowler, Kit Freedman, Kelli C. Trujillo, Victoria H. Zero Jul 2018

Natural Resource Condition Assessment, Scotts Bluff National Monument, Reilly R. Dibner, Nicole Korfanta, Gary Beauvais, Jonathan Bowler, Kit Freedman, Kelli C. Trujillo, Victoria H. Zero

United States National Park Service: Publications

Executive Summary

In collaboration with the National Park Service, the University of Wyoming Ruckelshaus Institute of Environment and Natural Resources and the Wyoming Natural Diversity Database completed the Natural Resource Condition Assessment (NRCA) for Scotts Bluff National Monument (NM). The purpose of the NRCA is to provide park leaders and resource managers with information on resource conditions to support near-term planning and management, long-term strategic planning, and effective science communication to decision-makers and the public.

Scotts Bluff NM was established in 1919. The purposes of the park include protecting and preserving the Mitchell Pass portion of the Oregon Trail and …


Biotime: A Database Of Biodiversity Time Series For The Anthropocene, Maria Dornelas, Laura H. Antão, Faye Moyes, Amanda E. Bates, Anne E. Magurran, Dušan Adams, Asem A. Akhmetzhanova, Ward Appeltans, José Manuel Adam, Frank P. Day Jul 2018

Biotime: A Database Of Biodiversity Time Series For The Anthropocene, Maria Dornelas, Laura H. Antão, Faye Moyes, Amanda E. Bates, Anne E. Magurran, Dušan Adams, Asem A. Akhmetzhanova, Ward Appeltans, José Manuel Adam, Frank P. Day

Biological Sciences Faculty Publications

Motivation: The BioTIME database contains raw data on species identities and abundances in ecological assemblages through time. These data enable users to calculate temporal trends in biodiversity within and amongst assemblages using a broad range of metrics. BioTIME is being developed as a community-led open-source database of biodiversity time series. Our goal is to accelerate and facilitate quantitative analysis of temporal patterns of biodiversity in the Anthropocene.

Main types of variables included: The database contains 8,777,413 species abundance records, from assemblages consistently sampled for a minimum of 2 years, which need not necessarily be consecutive. In addition, the database contains …


Simultaneous Regional Detection Of Land-Use Changes And Elevated Ghg Levels: The Case Of Spring Precipitation In Tropical South America, Armineh Barkhordarian, Hans Von Storch, Ali Behrangi, Paul C. Loikith, Carlos R. Mechoso, Judah Detzer Jun 2018

Simultaneous Regional Detection Of Land-Use Changes And Elevated Ghg Levels: The Case Of Spring Precipitation In Tropical South America, Armineh Barkhordarian, Hans Von Storch, Ali Behrangi, Paul C. Loikith, Carlos R. Mechoso, Judah Detzer

Geography Faculty Publications and Presentations

A decline in dry season precipitation over tropical South America has a large impact on ecosystem health of the region. Results here indicate that the magnitude of negative trends in dry season precipitation in the past decades exceeds the estimated range of trends due to natural variability of the climate system defined in both the preindustrial climate and during the 850–1850 millennium. The observed drying is associated with an increase in vapor pressure deficit. The univariate detection analysis shows that greenhouse gas (GHG) forcing has a systematic influence in negative 30-year trends of precipitation ending in 1998 and later on. …