Search Results

You are looking at 1 - 6 of 6 items for :

  • Atmosphere-land interactions x
  • Western Arctic Linkage Experiment (WALE) x
  • All content x
Clear All
A. D. McGuire, J. E. Walsh, J. S. Kimball, J. S. Clein, S. E. Euskirchen, S. Drobot, U. C. Herzfeld, J. Maslanik, R. B. Lammers, M. A. Rawlins, C. J. Vorosmarty, T. S. Rupp, W. Wu, and M. Calef

). The Kuparuk Flux Study ( Kane and Reeburgh 1998 ) and the Arctic Transitions in the Land Atmosphere System Study (ATLAS; McGuire et al. 2003 ) have also been conducted in the western Arctic during the last two decades to understand the role of tundra ecosystems in the Earth system. The WALE region is defined in terms of nodes of the National Snow and Ice Data Center (NSIDC) north polar Equal-Area Scalable Earth (EASE) grid ( Armstrong and Brodzik 1995 ). The region spans a latitudinal range from

Full access
J. S. Kimball, M. Zhao, A. D. McGuire, F. A. Heinsch, J. Clein, M. Calef, W. M. Jolly, S. Kang, S. E. Euskirchen, K. C. McDonald, and S. W. Running

vegetation growth, and alteration of land–atmosphere CO 2 exchange ( Randerson et al. 1997 ; Nemani et al. 2003 ; Angert et al. 2005 ). Net primary production (NPP) represents the sequestration of atmospheric CO 2 through plant photosynthesis or gross primary production (GPP), and carbon storage in vegetation biomass and soils. Net ecosystem production (NEP) is the residual difference between NPP and CO 2 losses from soil heterotrophic respiration and defines the net ecosystem–atmosphere exchange of

Full access
T. Scott Rupp, Xi Chen, Mark Olson, and A. David McGuire

Series I, Vol. 51, Springer-Verlag, 489 pp . Clein , J. S. , A. D. McGuire , M. Calef , and E. S. Euskirchen . 2006 . The effects of different climate input datasets on simulated carbon dynamics in the western Arctic. Earth Interactions this issue . Csiszar , I. Coauthors 2004 . Land use and fires. Land Change Science: Observing, Monitoring, and Understanding Trajectories of Change on the Earth’s Surface, G. Gutman et al., Eds., Kluwer Academic, 329–350 . Cumming , S. G

Full access
Joy Clein, A. David McGuire, Eugenie S. Euskirchen, and Monika Calef

:10.1029/2004GB002239 . Zhuang , Q. Coauthors 2006 . CO 2 and CH 4 exchanges between land ecosystems and the atmosphere in northern high latitudes over the 21 st Century. Geophys. Res. Lett. 33 . L17403, doi:10.1029/2006GL026972 . Figure 1. Annual and monthly climate inputs used to drive the Terrestrial Ecosystem Model in this study. (a) Mean annual air temperature (TAIR), (b) mean monthly TAIR, (c) total annual precipitation (PREC), (d) total monthly PREC, (e) mean annual downwelling

Full access
J. S. Kimball, K. C. McDonald, and M. Zhao

production (NPP) is the primary conduit of carbon transfer from the atmosphere to the land surface and is thus a fundamental component of the global carbon cycle. In seasonally frozen environments, vegetation productivity is constrained by low temperatures and plant-available moisture for much of the year, while the active growing season is primarily determined by length of the nonfrozen period ( Jarvis and Linder 2000 ; Kimball et al. 2004 ). Boreal forest and arctic tundra biomes of the northern high

Full access
Wanli Wu, Amanda H. Lynch, Sheldon Drobot, James Maslanik, A. David McGuire, and Ute Herzfeld

changes requires credible data for regional hydrologic and ecological analyses. The Western Arctic Linkage Experiment (WALE) is designed to investigate regional water, energy, and carbon dioxide budgets in Alaska and western Canada through the comparison of modeling and observationally derived datasets (McGuire et al. 2007, manuscript submitted to Earth Interactions ). The availability of large-scale, long-term datasets of land surface water and energy budgets is essential for understanding the

Full access