Geography & Atmospheric Science: Recent submissions

Now showing items 241-260 of 386

    • Effects of Sea-Salt Aerosols on Precipitation in Simulations of Shallow Cumulus 

      Kogan, Yefim L.; Mechem, David B.; Choi, Kityan (American Meteorological Society, 2012-02-01)
      A suite of large-eddy simulations with size-resolving microphysical processes was performed in order to assess effects of sea-salt aerosols on precipitation process in trade cumulus. Simulations based on observations from ...

    • A Bulk Parameterization of Giant CCN 

      Mechem, David B.; Kogan, Yefim L. (American Meteorological Society, 2008-07-01)
      A parameterization for giant cloud condensation nuclei (GCCN), suitable for use in bulk microphysical models, has been developed that uses precise representations of the condensational growth of aerosol particles in the ...

    • Prospects of the WSR-88D Radar for Cloud Studies 

      Melnikov, Valery M.; Zrnić, Dusan S.; Doviak, Richard J.; Chilson, Phillip B.; Mechem, David B.; Kogan, Yefim L. (American Meteorological Society, 2011-04-01)
      Sounding of nonprecipitating clouds with the 10-cm wavelength Weather Surveillance Radar-1988 Doppler (WSR-88D) is discussed. Readily available enhancements to signal processing and volume coverage patterns of the WSR-88D ...

    • Controls on precipitation and cloudiness in simulations of trade-wind cumulus as observed during RICO 

      van Zanten, Margreet C.; Stevens, Bjorn; Nuijens, Louise; Siebesma, A. Pier; Ackerman, A. S.; Burnet, F.; Cheng, A.; Couvreux, F.; Jiang, H.; Khairoutdinov, M.; Kogan, Yefim L.; Lewellen, D. C.; Mechem, David B. (American Geophysical Union, 2011-06-28)
      Twelve large-eddy simulations, with a wide range of microphysical representations, are compared to each other and to independent measurements. The measurements and the initial and forcing data for the simulations are taken ...

    • Characteristics of warm season precipitating storms in the Arkansas–Red River basin 

      Tucker, Donna F.; Li, Xingong (American Geophysical Union, 2009-07-16)
      [1] Analysis of a multisensor precipitation product enables us to extract the precipitation from individual storms in the Arkansas–Red River drainage basin over a period of 11 years. We examine the year-to-year and ...

    • Recent advances in the climate change biology literature: describing the whole elephant 

      Peterson, A. Townsend; Menon, Shaily; Li, Xingong (Royal Meteorological Society, 2010-06-11)
      Climate change biology is seeing a wave of new contributions, which are reviewed herein. Contributions treat shifts in phenology and distribution, and both document past and forecast future effects. However, many of the ...

    • Facing the Future: Encouraging Critical Cartographic Literacies In Indigenous Communities 

      Johnson, Jay T.; Louis, Renee Pualani; Pramono, Albertus Hadi (University of British Columbia, Okanagan, 2005-01-01)
      As Indigenous academics researching and participating with various mapping initiatives, we have began to perceive that while many Indigenous communities have a long history of using Western cartographic techniques, including ...

    • Simulating the Biogeochemical and Biogeophysical Impacts of Transient Land Cover Change and Wood Harvest in the Community Climate System Model (CCSM4) from 1850 to 2100 

      Lawrence, Peter J.; Feddema, Johannes J.; Bonan, Gordon B.; Meehl, Gerald A.; O’Neill, Brian C.; Oleson, Keith W.; Levis, Samuel; Lawrence, David M.; Kluzek, Erik; Lindsay, Keith (American Meteorological Society, 2012-05-01)
      To assess the climate impacts of historical and projected land cover change in the Community Climate System Model, version 4 (CCSM4), new time series of transient Community Land Model, version 4 (CLM4) plant functional ...

    • Role of snow and glacier melt in controlling river hydrology in Liddar watershed (western Himalaya) under current and future climate 

      Jeelani, G.; Feddema, Johannes J.; van der Veen, Cornelis J.; Stearns, Leigh A. (American Geophysical Union, 2012-12-12)
      [1] Snowmelt and icemelt are believed to be important regulators of seasonal discharge of Himalayan rivers. To analyze the long term contribution of snowmelt and glacier/icemelt to river hydrology we apply a water budget ...

    • An examination of urban heat island characteristics in a global climate model 

      Oleson, Keith W.; Bonan, Gordon B.; Feddema, Johannes J.; Jackson, Trisha L. (Royal Meteorological Society, 2010-07-27)
      A parameterization for urban surfaces has been incorporated into the Community Land Model as part of the Community Climate System Model. The parameterization allows global simulation of the urban environment, in particular ...

    • Assessing Regional Climate and Local Landcover Impacts on Vegetation with Remote Sensing 

      Lin, Pei-Ling; Brunsell, Nathaniel A. (MDPI, 2013-09-09)
      Landcover change alters not only the surface landscape but also regional carbon and water cycling. The objective of this study was to assess the potential impacts of landcover change across the Kansas River Basin (KRB) by ...

    • Differential effects of extreme drought on production and respiration: synthesis and modeling analysis 

      Shi, Z.; Thomey, M. L.; Mowll, W.; Litvak, Marcy E.; Brunsell, Nathaniel A.; Collins, S. L.; Pockman, W. T.; Smith, M. D.; Knapp, A. K.; Luo, Y. (European Geosciences Union, 2014-02-04)
      Extremes in climate may severely impact ecosystem structure and function, with both the magnitude and rate of response differing among ecosystem types and processes. We conducted a modeling analysis of the effects of extreme ...

    • Spatial distribution of the risk of dengue fever in southeast Brazil, 2006-2007 

      Cordeiro, Ricardo; Donalisio, Maria Rita; Andrade, Valmir R.; Mafra, Ana C. N.; Nucci, Luciana B.; Brown, John C.; Stephan, Celso (BioMed Central, 2011-05-20)
      Background Many factors have been associated with circulation of the dengue fever virus and vector, although the dynamics of transmission are not yet fully understood. The aim of this work is to estimate the spatial ...

    • Extinct No More: Discourses on Tasmanian Aboriginal Heritage 

      Price, William (University of Kansas, 2014-05-31)
      A belief has persisted that the Tasmanian Aboriginals became extinct in 1876, in the aftermath of colonization. Heritage has assumed a central role in the contemporary efforts of Tasmanian Aboriginals to reassert their ...

    • Direct measurements of episodic snow accumulation on the Antarctic polar plateau 

      Braaten, David A. (Wiley, 2000-04-27)
      During a 1-year field experiment at a remote location on the Antarctic polar plateau (85.67°S, 46.38°W) influenced by moderate magnitude katabatic winds, snow accumulation was characterized at three different spatial and ...

    • Coherent radar ice thickness measurements over the Greenland ice sheet 

      Gogineni, Sivaprasad; Tammana, Dilip; Braaten, David A.; Leuschen, Carl J.; Legarsky, Justin; Kanagaratnam, Pannirselvam; Stiles, James Marion; Allen, Christopher Thomas; Jezek, Kenneth C.; Akins, Torry L. (Wiley, 2001-12-27)
      We developed two 150-MHz coherent radar depth sounders for ice thickness measurements over the Greenland ice sheet. We developed one of these using connectorized components and the other using radio frequency integrated ...

    • A detailed assessment of snow accumulation in katabatic wind areas on the Ross Ice Shelf, Antarctica 

      Braaten, David A. (Wiley, 1997-12-27)
      An investigation of time dependent snow accumulation and erosion dynamics in a wind-swept environment was undertaken at two automatic weather stations sites on the Ross Ice Shelf between January 1994 and November 1995 using ...

    • Rapid ice discharge from southeast Greenland glaciers 

      Rignot, E.; Braaten, David A.; Gogineni, Sivaprasad; Krabill, William B.; McConnell, Joesph R. (Wiley, 2004-03-25)
      [1] Interferometric synthetic-aperture radar (InSAR) observations of southeast Greenland glaciers acquired by the Earth Remote Sensing Satellites (ERS-1/2) in 1996 were combined with ice sounding radar data collected in ...

    • Improvement of radar ice-thickness measurements of Greenland outlet glaciers using SAR processing 

      Braaten, David A.; Gogineni, Sivaprasad; Tammana, Dilip; Namburi, Saikiran; Paden, John D.; Gurumoorthy, Krishna K. (International Glaciological Society, 2002-01-01)
      Extensive aircraft-based radar ice-thickness measurements over the interior and outlet-glacier regions of the Greenland ice sheet have been obtained by the University of Kansas since 1993, with the latest airborne surveys ...

    • Pedogenesis along a Climosequence in Loess-Derived Soils of the Central Great Plains 

      Klopfenstein, Scott (University of Kansas, 2014-05-31)
      Understanding the pedogenic effects of average annual precipitation on loess-derived soils provides insight to past climate scenarios based on buried paleosols, as well as the ability to better predict future soil morphological ...