نتایج جستجو برای: northern eurasia
تعداد نتایج: 114337 فیلتر نتایج به سال:
Variations in the strength of the current spring snow albedo feedback (SAF) over Northern Hemisphere land surfaces (NH) explain over one third of the 21 century temperature response to anthropogenic forcings in this region within global circulation model (GCM) projections. Observation based estimates of controls on SAF are needed to constrain the snow and albedo parameterizations in these model...
Patterns of genetic variation within a species may be a consequence of historical factors, such as past fragmentation, as well as current barriers to gene flow. Using sequence data from the mitochondrial cytochrome oxidase subunit II region (COII) and the nuclear gene wingless, we conducted a phylogeographical study of the holarctic skipper Hesperia comma to elucidate patterns of genetic divers...
Frey & Smith 2003: Polar Research 22(2), 287-300 The sensitivity of Arctic climate is documented in the instrumental record of recent decades and is evident in the large temperature increases seen over Northern Hemisphere land areas from about 40° N to 70° N (Nicholls et al. 1996). In particular, sharp temperature increases from 1966–1995 are found in Eurasia and northwest North America, with p...
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