Spatial distribution of soil active layer depth averaged for three decades: 2000-2009 for the historical, 2050-2059 and 2090-2099 for six climate projections - Alaska LandCarbon Project

Maps of the decadal averages of soil active layer depth (in m). The active layer depth is the seasonal maximum of permafrost thaw. Decadal averages are provided for [2000-2009], [2050-2059] and [2090-2099]. The decadal means are averaged from outputs of the Terrestrial Ecosystem Model simulations for Alaska at a 1km resolution. NoData corresponds to pixels with no permafrost or active layer deeper than 3m for the historical map and deeper than 5m for the projection maps. Historical records start in 1901 and end in 2009, projections start in 2010 and end in 2100. Projections have been conducted for six climate scenarios for the B1, A1B and A2 emission scenarios of the Intergovernmental Panel on Climate Change Special Report on Emissions Scenarios (IPCC-SRES). The two global circulation models used for these projections are (1) the 5th generation of the ECHAM general circulation model from the Max Planck Institute for Meteorology (mpi echam5), and (2) the fourth generation global circulation model from the Canadian Centre for Climate Modelling and Analysis (cccma cgcm31).

Scenarios: B1, A1B, A2

Centers, Model Names, Versions, and Acronyms:

Canadian Centre for Climate Modelling and Analysis, General Circulation Model
version 3.1 - t47 (CCMA), cccma cgcm31

Max Planck Institute for Meteorology, European Centre Hamburg Model 5 (ECHAM5), mpi echam5