Seminar: Using PCA and Global Smoothing to Explore Differences between Forcings for a Global Vegetation Model

Date: Thursday, December 1, 2011

Time: 12:00 to 1:00pm

Place: Mesa Lab: Chapman Room (245)

Speaker: Johan Lindström from the Mathematical Statistics, Centre for Mathematical Sciences at Lund University


A common method for comparing the result of different global
 circulation models (GCMs) under different emission scenarios is to
 study global climate response variables, such as mean temperature. An
 interesting alternative measure of climate sensitivity is to study
 the biosphere's response to the different climate scenarios. The
 Lund-Postdam-Jena (LPJ) global vegetation model and its extension
 LPJ-GUESS is a dynamic global vegetation model that can be coupled to
 GCMs and used to explore the effect of varying climates on
 vegetation and carbon uptake.

Using the output from different GCMs under different emission
scenarios LPJ-GUESS can be used to generate global vegetation and
carbon uptake patterns that are specific to each forcing climate 
scenario. We investigate if important regional and global differences 
exist between the vegetation patterns from different GCMs and emission 
scenarios. An important question is if potential differences are primarily 
due to the different emission scenarios or to the different GCMs.
Will this event be webcast to the public by NCAR|UCAR?: 
Announcement timing: 
November 22, 2011 to December 1, 2011