Beginning a New Era of Drought Monitoring Across North America

Lawrimore, J. H.; Heim, Richard R.; Svoboda, Mark D.; Swail, Val R.; Englehart, Phil J.

doi:10.1175/1520-0477-83.8.1191

Cited by 64 publications

(37 citation statements)

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“…Overall, the drought of 1988 cost 5000 lives (Trenberth and Guillemot 1996) and more than $30 billion in related damages . The total economic cost of all major drought events in the United States since 1980 exceeds $100 billion (Lawrimore et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Variability in the Environmental Factors Driving Evapotranspiration from a Grazed Rangeland during Severe Drought Conditions

Alfieri

Blanken

Yates

et al. 2007

Journal of Hydrometeorology

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Nearly one-half of the earth's terrestrial surface is susceptible to drought, which can have significant social, economic, and environmental impacts. Therefore, it is important to develop better descriptions and models of the processes linking the land surface and atmosphere during drought. Using data collected during the International H 2 O Project, the study presented here investigates the effects of variations in the environmental factors driving the latent heat flux (E ) during drought conditions at a rangeland site located in the panhandle of Oklahoma. Specifically, this study focuses on the relationships of E with vapor pressure deficit, wind speed, net radiation, soil moisture content, and greenness fraction. While each of these environmental factors has an influence, soil moisture content is the key control on E. The role of soil moisture in regulating E is explained in terms of the surface resistance to water vapor transfer. The results show that E transitioned between being water or energy limited during the course of the drought. The implications of this on the ability to understand and model drought conditions and transitions into or out of droughts are discussed.

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Section: Introductionmentioning

confidence: 99%

Variability in the Environmental Factors Driving Evapotranspiration from a Grazed Rangeland during Severe Drought Conditions

Alfieri

Blanken

Yates

et al. 2007

Journal of Hydrometeorology

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“…An all-data approach such as this, where remote sensing methods are leveraged with other supplementary data streams, including ground-based measurements, may represent the most promising approach for cohesively and coherently addressing drought effects at broad scales (AghaKouchak et al, 2015;Cohen et al, 2016;Moore et al, 2016). A number of integrated wide-area monitoring systems have been developed that loosely follow this type of conceptual model, including the US Drought Monitor and the related North American Drought Monitor (Lawrimore et al, 2002). Nevertheless, no current integrated wide-area drought monitoring system focuses specifically on drought stress in forested ecosystems.…”

Section: Remote-sensing-based Measures Of Droughtmentioning

confidence: 99%

Review of broad-scale drought monitoring of forests: Toward an integrated data mining approach

Norman

Koch

Hargrove

2016

Forest Ecology and Management

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a b s t r a c tEfforts to monitor the broad-scale impacts of drought on forests often come up short. Drought is a direct stressor of forests as well as a driver of secondary disturbance agents, making a full accounting of drought impacts challenging. General impacts can be inferred from moisture deficits quantified using precipitation and temperature measurements. However, derived meteorological indices may not meaningfully capture drought impacts because drought responses can differ substantially among species, sites and regions. Meteorology-based approaches also require the characterization of current moisture conditions relative to some specified time and place, but defining baseline conditions over large, ecologically diverse regions can be as difficult as quantifying the moisture deficit itself. In contrast, remote sensing approaches attempt to observe immediate, secondary, and longer-term changes in vegetation response, yet they too are no panacea. Remote sensing methods integrate responses across entire mixed-vegetation pixels and rarely distinguish the effects of drought on a single species, nor can they disentangle drought effects from those caused by various other disturbance agents. Establishment of suitable baselines from remote sensing may be even more challenging than with meteorological data. Here we review broadscale drought monitoring methods, and suggest that an integrated data-mining approach may hold the most promise for enhancing our ability to resolve drought impacts on forests. A big-data approach that integrates meteorological and remotely sensed data streams, together with other datasets such as vegetation type, wildfire occurrence and pest activity, can clarify direct drought effects while filtering indirect drought effects and consequences. This strategy leverages the strengths of meteorology-based and remote sensing approaches with the aid of ancillary data, such that they complement each other and lead toward a better understanding of drought impacts.Published by Elsevier B.V.

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“…This idea builds upon previous work by the National Drought Mitigation Center and Dr. Don Wilhite, in the early 2000s, that pointed to the need for a global drought preparedness network built through regional and global partnerships. Indeed, this effort has resulted in the establishment of numerous regional drought monitoring networks (Wilhite 2002;Lawrimore et al 2002) that contribute data and analysis to the current integration effort.…”

Section: Global Drought Monitoring By Integrating Continental Droughtmentioning

confidence: 99%

“…The USDM may be accessed via the web (at http://droughtmonitor.unl.edu/). The NADM (Figure 4) is prepared on a monthly basis from the monthly drought depictions for Canada and Mexico and from the USDM for the week closest to the end of the month for the United States (Lawrimore et al 2002;Heim and Brewer 2010;Sivakumar et al 2011a). The drought depictions in each of the three countries are prepared independently of each other by experts within each country.…”

Section: The Us Drought Monitor and North American Drought Monitormentioning

confidence: 99%

The Global Drought Monitor Portal: The Foundation for a Global Drought Information System

Heim

Brewer

2012

Earth Interactions

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Beginning a New Era of Drought Monitoring Across North America

Cited by 64 publications

References 0 publications

Variability in the Environmental Factors Driving Evapotranspiration from a Grazed Rangeland during Severe Drought Conditions

Variability in the Environmental Factors Driving Evapotranspiration from a Grazed Rangeland during Severe Drought Conditions

Review of broad-scale drought monitoring of forests: Toward an integrated data mining approach

The Global Drought Monitor Portal: The Foundation for a Global Drought Information System

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