Accounting for terrestrial ecosystem feedbacks in a regional climate model Baltex 2008: Utility of Regional Climate Models Ben Smith Geobiosphere Science Centre, Lund University, Sweden Credits: Patrick Samuelsson, Ulf Hansson, Rossby Centre SMHI Anna Wramneby, Lund University
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Accounting for terrestrial ecosystem feedbacksin a regional climate model
Baltex 2008: Utility of Regional Climate Models
Ben Smith
Geobiosphere Science Centre,Lund University, Sweden
Credits:
Patrick Samuelsson, Ulf Hansson, Rossby Centre SMHI
Anna Wramneby, Lund University
Global carbon cyclemean stocks and fluxes for 1990s (Gt C)
oceans:38 000 +2/yr
soils: 1700
vegetation:600
atmosphere: 760 +3/yr
terrestrial ecosystems:2 300 +3/yrland use
change
fossil fuel burningcement production
92
90
8
6 2
120
123
Source: IPCC, 2007
Albedo change could offset carbon sequestrationas forests expand at high northern latitudes*
*Betts 2000Nature 408: 187
Albedo change
Radiation forcing due to albedo change
W m−2
CO2-emission yielding same radiation forcing
tC ha−1
latent heat(evapo-
transpiration)sensible
heat
sensibleheat
incomingSW radiation
incomingSW radiation
Partitioning of land surface-atmosphere energy fluxesdepends on vegetation type and cover