Search Results

You are looking at 1 - 4 of 4 items for :

  • Biogeophysical Climate Impacts of Land Use and Land Cover Change (LULCC) x
  • All content x
Clear All
Weiyue Zhang, Zhongfeng Xu, and Weidong Guo

monsoon seasons of spring and autumn ( Xu et al. 2015 ). Given the diverse results of the influence on the troposphere caused by LULCC, we revisit this issue by investigating the influence of LULCC on tropospheric air temperatures using a fully coupled Earth system model in this study. In addition to studies of the local climatic responses to LULCC, the remote climate response to LULCC has also been investigated in previous studies. For example, the land-cover change in the tropics and Southeast Asia

Full access
A L. Hirsch, A. J. Pitman, J. Kala, R. Lorenz, and M. G. Donat

work by Guo and Dirmeyer (2013) . Hirsch et al. (2014b) showed Australia to be strongly coupled and therefore another land–atmosphere “hotspot” region, although the strength of the coupling was strongly influenced by large-scale modes of variability. Specifically, regions of strong coupling extend southward from the tropics during wetter (commonly La Niña) years and contract when less soil moisture is available (commonly El Niño) years. During dry years when soil moisture is limited, the land

Full access
Edward Armstrong, Paul Valdes, Jo House, and Joy Singarayer

more water stored on the surface. The negligible change in precipitation due to LUC at 4× CO 2 is likely in part due to the reduced cooling impact of LUC. However, the influence of CO 2 on canopy conductance is also expected to play a role. Conductance decreases by −0.0016 m s −1 globally with a greater impact over the tropics. This decrease is enhanced in the northern temperate and boreal regions during Northern Hemisphere summer. This is likely to decrease the rate of evapotranspiration and

Open access
Soumaya Belmecheri, Flurin Babst, Amy R. Hudson, Julio Betancourt, and Valerie Trouet

slow and strongly meandering NHJ is associated with anomalous persistence of weather extremes at the surface ( Dole et al. 2011 ; Galarneau et al. 2012 ; Tachibana et al. 2010 ). Such persistent blocking patterns form when planetary Rossby waves—associated with the NHJ—have a larger amplitude than usual. Some recent studies have postulated that a weakening of the temperature gradient between the Arctic and the tropics may favor such increased wave amplitudes ( Francis and Vavrus 2012 ; Petoukhov

Full access