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Land surface model: VIC
UW: Bart Nijssen, Amanda Tan, Dennis P. Lettenmaier
DRC: Jose Renteria, Kevin Lindt
NPS: Andrew Roberts
Consultant: Tony Craig
RASM Project Meeting: May 15-17, 2012, Monterey, CA
Personnel changes
• Left: – Chunmei Zhu (postdoc)
• New: – Bart Nijssen (research scientist)
• Unchanged:– Amanda Tan (graduate student)– Dennis Lettenmaier (PI)
VIC infrastructure developments
• Parallelization:– Allows VIC to run on multiple processors– Allows VIC to run alongside the ocean model– Significantly reduces model runtime
• Standardized output and state files (NetCDF)• In-progress: multiple output streams
Model simulations• Offline simulations
– Long-term simulations (from 1948-)– Interpolated to RASM grid– Based on Sheffield et al. 2006
Sheffield, J., G. Goteti, and E. F. Wood (2006), Development of a 50-year high-resolution global dataset of meteorological forcings for land surface modeling, J Climate, 19(13), 3088-3111, doi:10.1175/jcli3790.1.
• Coupled simulations– r28RB1g– r30RB1g
• Analysis period: 1990-1999
Air temperature: Annual 1990-1999
Sheffield (2006) r28RB1g
Air temperature: 1990-1999
Sheffield (2006)
r28RB1g
January April July October
Air temperature: 1990-1999r28RB1g - Sheffield (2006)
Annual January
Air temperature: 1990-1999r28RB1g - Sheffield (2006)
Annual
January
Precipitation: Annual 1990-1999
Sheffield (2006) r28RB1g
Precipitation: Annual 1990-1999Sheffield (2006)
r28RB1g
r28RB1g - Sheffield (2006)
Precipitation: monthly 1990-1999
Sheffield (2006) r28RB1g
Basins
Water balance
P = E + R + ΔSr28RB1g: 1990-1999
Evaporation and runoff: 1990-1999 r28RB1g
evaporation runoff
North AmericaYukonMacKenzie
Eurasia
Ob Yenisei Lena
Streamflow - Lenar30RB1gr28RB1g
Net radiation: 1990-1999
VIC offline r28RB1g
Latent heat: 1990-1999
VIC offline r28RB1g
Sensible heat: 1990-1999
VIC offline r28RB1g
Sensible heat: 1990-1999
r28RB1g
VIC 4.0.4
January April July October
January 1990-1999: Skin and air temperatures
Air temperature Skin temperature
Skin – air temperature r28RB1gAir temperature Skin temperature
Skin – air temperature
VIC 4.0.4
Snow extent
r28RB1g
End of April, 1995
What next?
• Final fixes to current version of VIC in RASM• Upgrade to VIC 4.1.2• Routing model• Link with dynamic vegetation• Link with land ice model