John Wesley Powell Center for Analysis and Synthesis

Publications

Filter Total Items: 104
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Year Published: 2012

Assessing confidence in Pliocene sea surface temperatures to evaluate predictive models

In light of mounting empirical evidence that planetary warming is well underway, the climate research community looks to palaeoclimate research for a ground-truthing measure with which to test the accuracy of future climate simulations. Model experiments that attempt to simulate climates of the past serve to identify both similarities and...

Dowsett, Harry J.; Robinson, Marci M.; Haywood, Alan M.; Hill, Daniel J.; Dolan, Aisling M.; Stoll, Danielle K.; Chan, Wing-Le; Abe-Ouchi, Ayako; Chandler, Mark A.; Rosenbloom, Nan A.; Otto-Bliesner, Bette L.; Bragg, Fran J.; Lunt, Daniel J.; Foley, Kevin M.; Riesselman, Christina R.
Assessing confidence in Pliocene sea surface temperatures to evaluate predictive models; 2012; Article; Journal; Nature Climate Change; Dowsett, Harry J.; Robinson, Marci M.; Haywood, Alan M.; Hill, Daniel J.; Dolan, Aisling M.; Stoll, Danielle K.; Chan, Wing-Le; Abe-Ouchi, Ayako; Chandler, Mark A.; Rosenbloom, Nan A.; Otto-Bliesner, Bette L.; Bragg, Fran J.; Lunt, Daniel J.; Foley, Kevin M.; Riesselman, Christina R.

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Year Published: 2012

Assessing future risks to agricultural productivity, water resources and food security: How can remote sensing help?

Although global food production has been rising, the world sti ll faces a major food security challenge. Over one billion people are currently undernourished (Wheeler and Kay, 2010). By the 2050s, the human population is projected to grow to 9.1 billion. Over three-quarters of these people will be living in developing countries, in regions that...

Thenkabail, Prasad S.; Knox, Jerry W.; Ozdogan, Mutlu; Gumma, Murali Krishna; Congalton, Russell G.; Wu, Zhuoting; Milesi, Cristina; Finkral, Alex; Marshall, Mike; Mariotto, Isabella; You, Songcai; Giri, Chandra; Nagler, Pamela
Assessing future risks to agricultural productivity, water resources and food security: How can remote sensing help?; 2012; Article; Journal; Photogrammetric Engineering and Remote Sensing; Thenkabail, Prasad S.; Knox, Jerry W.; Ozdogan, Mutlu ; Gumma, Murali Krishna; Congalton, Russell G.; Wu, Zhuoting ; Milesi, Cristina ; Finkral, Alex ; Marshall, Mike ; Mariotto, Isabella ; You, Songcai ; Giri, Chandra ; Nagler, Pamela

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Year Published: 2012

Water quality studied in areas of unconventional oil and gas development, including areas where hydraulic fracturing techniques are used, in the United States

Domestic oil and gas production and clean water are critical for economic growth, public health, and national security of the United States. As domestic oil and gas production increases in new areas and old fields are enhanced, there is increasing public concern about the effects of energy production on surface-water and groundwater quality. To a...

Susong, David D.; Gallegos, Tanya J.; Oelsner, Gretchen P.
Water quality studied in areas of unconventional oil and gas development, including areas where hydraulic fracturing techniques are used, in the United States; 2012; FS; 2012-3049; Susong, David D.; Gallegos, Tanya J.; Oelsner, Gretchen P.

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Year Published: 2012

The effect of size and competition on tree growth rate in old-growth coniferous forests

Tree growth and competition play central roles in forest dynamics. Yet models of competition often neglect important variation in species-specific responses. Furthermore, functions used to model changes in growth rate with size do not always allow for potential complexity. Using a large data set from old-growth forests in California, models were...

Das, Adrian
The effect of size and competition on tree growth rate in old-growth coniferous forests; 2012; Article; Journal; Canadian Journal of Forest Research; Das, Adrian

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Year Published: 2012

An Automated Cropland Classification Algorithm (ACCA) for Tajikistan by combining Landsat, MODIS, and secondary data

The overarching goal of this research was to develop and demonstrate an automated Cropland Classification Algorithm (ACCA) that will rapidly, routinely, and accurately classify agricultural cropland extent, areas, and characteristics (e.g., irrigated vs. rainfed) over large areas such as a country or a region through combination of multi-sensor...

Thenkabail, Prasad S.; Wu, Zhuoting
An Automated Cropland Classification Algorithm (ACCA) for Tajikistan by combining Landsat, MODIS, and secondary data; 2012; Article; Journal; Remote Sensing; Thenkabail, Prasad S.; Wu, Zhuoting

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Year Published: 2012

Climate model simulations of the mid-Pliocene: Earth's last great interval of global warmth

Pliocene Model Intercomparison Project Workshop; Reston, Virginia, 2–4 August 2011 The Pliocene Model Intercomparison Project (PlioMIP), supported by the U.S. Geological Survey's (USGS) Pliocene Research, Interpretation and Synoptic Mapping (PRISM) project and Powell Center, is an integral part of a third iteration of the Paleoclimate Modelling...

Dolan, A.M.; Haywood, A.M.; Dowsett, H.J.
Climate model simulations of the mid-Pliocene: Earth's last great interval of global warmth; 2012; Article; Journal; Eos; Dolan, A. M.; Haywood, A. M.; Dowsett, H. J.

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Year Published: 2011

Accounting for the ecosystem services of migratory species: Quantifying migration support and spatial subsidies

Migratory species support ecosystem process and function in multiple areas, establishing ecological linkages between their different habitats. As they travel, migratory species also provide ecosystem services to people in many different locations. Previous research suggests there may be spatial mismatches between locations where humans use...

Semmens, Darius J.; Diffendorfer, J.E.; López-Hoffman, Laura; Shapiro, Carl D.
Accounting for the ecosystem services of migratory species: Quantifying migration support and spatial subsidies; 2011; Article; Journal; Ecological Economics; Semmens, Darius J.; Diffendorfer, James E.; Lopez-Hoffman, Laura ; Shapiro, Carl D.

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Year Published: 2011

Sea surface temperatures of the mid-Piacenzian Warm Period: A comparison of PRISM3 and HadCM3

It is essential to document how well the current generation of climate models performs in simulating past climates to have confidence in their ability to project future conditions. We present the first global, in-depth comparison of Pliocene sea surface temperature (SST) estimates from a coupled ocean–atmosphere climate model experiment and a SST...

Dowsett, H.J.; Haywood, A.M.; Valdes, P.J.; Robinson, M.M.; Lunt, D.J.; Hill, D.J.; Stoll, D.K.; Foley, K.M.
Sea surface temperatures of the mid-Piacenzian Warm Period: A comparison of PRISM3 and HadCM3; 2011; Article; Journal; Palaeogeography, Palaeoclimatology, Palaeoecology; Dowsett, H. J.; Haywood, A. M.; Valdes, P. J.; Robinson, M. M.; Lunt, D. J.; Hill, D. J.; Stoll, D. K.; Foley, K. M.