superparameterized cesm: multi-instance landian baker, mark branson, don dazlich, dave randall,...
TRANSCRIPT
![Page 1: SuperParameterized CESM: Multi-Instance LandIan Baker, Mark Branson, Don Dazlich, Dave Randall, Scott Denning, Cheryl Craig, Jim Edwards, Mariana Vertenstein, Brian Eaton, and many](https://reader036.vdocuments.net/reader036/viewer/2022071106/5fe0b5adb1201f395b399e1d/html5/thumbnails/1.jpg)
SuperParameterized CESM: Multi-Instance Land
Ian Baker, Mark Branson, Don Dazlich, Dave Randall, Scott Denning, Cheryl Craig, Jim Edwards, Mariana
Vertenstein, Brian Eaton, and many more
NCAR LMWG meeting, Boulder CO, 24-26 Feb 2014Friday, February 21, 14
![Page 2: SuperParameterized CESM: Multi-Instance LandIan Baker, Mark Branson, Don Dazlich, Dave Randall, Scott Denning, Cheryl Craig, Jim Edwards, Mariana Vertenstein, Brian Eaton, and many](https://reader036.vdocuments.net/reader036/viewer/2022071106/5fe0b5adb1201f395b399e1d/html5/thumbnails/2.jpg)
Superparameterization
• GCM timestep; tens of minutes
• CRM timestep; seconds
Friday, February 21, 14
![Page 3: SuperParameterized CESM: Multi-Instance LandIan Baker, Mark Branson, Don Dazlich, Dave Randall, Scott Denning, Cheryl Craig, Jim Edwards, Mariana Vertenstein, Brian Eaton, and many](https://reader036.vdocuments.net/reader036/viewer/2022071106/5fe0b5adb1201f395b399e1d/html5/thumbnails/3.jpg)
Superparameterization• ‘Curtain’ of CRMs in a single GCM gridcell
• Current Version: CAM/SAM/CLM
• How do we represent land in this configuration?
Friday, February 21, 14
![Page 4: SuperParameterized CESM: Multi-Instance LandIan Baker, Mark Branson, Don Dazlich, Dave Randall, Scott Denning, Cheryl Craig, Jim Edwards, Mariana Vertenstein, Brian Eaton, and many](https://reader036.vdocuments.net/reader036/viewer/2022071106/5fe0b5adb1201f395b399e1d/html5/thumbnails/4.jpg)
Superparameterized CESM (SP-CESM)
Multiple atmospheres, single land
Multiple atmospheres, multiple land
From this To this
Friday, February 21, 14
![Page 5: SuperParameterized CESM: Multi-Instance LandIan Baker, Mark Branson, Don Dazlich, Dave Randall, Scott Denning, Cheryl Craig, Jim Edwards, Mariana Vertenstein, Brian Eaton, and many](https://reader036.vdocuments.net/reader036/viewer/2022071106/5fe0b5adb1201f395b399e1d/html5/thumbnails/5.jpg)
TESTING: Superparameterized
Single Column Model (Super-SCM)
(NOT CESM)
From this
To thisTo this
Atmosphere
Land
‘SASL’
‘MASL’ ‘MAML’
Friday, February 21, 14
![Page 6: SuperParameterized CESM: Multi-Instance LandIan Baker, Mark Branson, Don Dazlich, Dave Randall, Scott Denning, Cheryl Craig, Jim Edwards, Mariana Vertenstein, Brian Eaton, and many](https://reader036.vdocuments.net/reader036/viewer/2022071106/5fe0b5adb1201f395b399e1d/html5/thumbnails/6.jpg)
SCM Testing:
K83• Precip similar in all configurations
• SASL: larger LE (wet season), H
• SASL: Radiation
• Diurnal precip patterns similar (not shown)
Friday, February 21, 14
![Page 7: SuperParameterized CESM: Multi-Instance LandIan Baker, Mark Branson, Don Dazlich, Dave Randall, Scott Denning, Cheryl Craig, Jim Edwards, Mariana Vertenstein, Brian Eaton, and many](https://reader036.vdocuments.net/reader036/viewer/2022071106/5fe0b5adb1201f395b399e1d/html5/thumbnails/7.jpg)
SCM Testing:
K83: PBL
• ‘Apples and Oranges’: meters vs. pressure height
• SASL: deeper mean PBL in wet season - no nocturnal collapse
• MASL/MAML : Similar behavior, larger annual ‘peak’ amplitude than SASL
Friday, February 21, 14
![Page 8: SuperParameterized CESM: Multi-Instance LandIan Baker, Mark Branson, Don Dazlich, Dave Randall, Scott Denning, Cheryl Craig, Jim Edwards, Mariana Vertenstein, Brian Eaton, and many](https://reader036.vdocuments.net/reader036/viewer/2022071106/5fe0b5adb1201f395b399e1d/html5/thumbnails/8.jpg)
SCM Testing: K83:
carbon cycle
• SASL: most radiation, smallest GPP• MASL: Larger GPP, less midday reduction• SASL: if precip is similar, why so much stress?
Friday, February 21, 14
![Page 9: SuperParameterized CESM: Multi-Instance LandIan Baker, Mark Branson, Don Dazlich, Dave Randall, Scott Denning, Cheryl Craig, Jim Edwards, Mariana Vertenstein, Brian Eaton, and many](https://reader036.vdocuments.net/reader036/viewer/2022071106/5fe0b5adb1201f395b399e1d/html5/thumbnails/9.jpg)
SCM Testing: K83:
canopy• SASL: water evaporates off leaves, not available to roots
• MASL: Less leaf water than SASL, more than MAML
• Re-partitioning of canopy processes can have large influence on overall behavior
• Other sites (ARM)?Friday, February 21, 14
![Page 10: SuperParameterized CESM: Multi-Instance LandIan Baker, Mark Branson, Don Dazlich, Dave Randall, Scott Denning, Cheryl Craig, Jim Edwards, Mariana Vertenstein, Brian Eaton, and many](https://reader036.vdocuments.net/reader036/viewer/2022071106/5fe0b5adb1201f395b399e1d/html5/thumbnails/10.jpg)
Global Runs-Sanity ChecksGlobal Mean Surface Sensible Heat Flux
0 20 40 60 80 100 120Month
16
18
20
22
24
26
W/m
2
Multi-Instance Non-MI
Global Mean Surface Latent Heat Flux
0 20 40 60 80 100 120Month
76
78
80
82
84
86
88
90
W/m
2
Multi-Instance Non-MI
Global Mean Surface Air Temperature
0 20 40 60 80 100 120Month
284
286
288
290
292
K
Multi-Instance Non-MI
Global Mean Water Equivalent Snow Depth
0 20 40 60 80 100 120Month
0.030
0.035
0.040
0.045
0.050
m
Multi-Instance Non-MI
Friday, February 21, 14
![Page 11: SuperParameterized CESM: Multi-Instance LandIan Baker, Mark Branson, Don Dazlich, Dave Randall, Scott Denning, Cheryl Craig, Jim Edwards, Mariana Vertenstein, Brian Eaton, and many](https://reader036.vdocuments.net/reader036/viewer/2022071106/5fe0b5adb1201f395b399e1d/html5/thumbnails/11.jpg)
Global Runs - Surface Temperature
Friday, February 21, 14
![Page 12: SuperParameterized CESM: Multi-Instance LandIan Baker, Mark Branson, Don Dazlich, Dave Randall, Scott Denning, Cheryl Craig, Jim Edwards, Mariana Vertenstein, Brian Eaton, and many](https://reader036.vdocuments.net/reader036/viewer/2022071106/5fe0b5adb1201f395b399e1d/html5/thumbnails/12.jpg)
Global Runs - DJF
LE
H
Friday, February 21, 14
![Page 13: SuperParameterized CESM: Multi-Instance LandIan Baker, Mark Branson, Don Dazlich, Dave Randall, Scott Denning, Cheryl Craig, Jim Edwards, Mariana Vertenstein, Brian Eaton, and many](https://reader036.vdocuments.net/reader036/viewer/2022071106/5fe0b5adb1201f395b399e1d/html5/thumbnails/13.jpg)
Global Runs - 300mb Height
Friday, February 21, 14
![Page 14: SuperParameterized CESM: Multi-Instance LandIan Baker, Mark Branson, Don Dazlich, Dave Randall, Scott Denning, Cheryl Craig, Jim Edwards, Mariana Vertenstein, Brian Eaton, and many](https://reader036.vdocuments.net/reader036/viewer/2022071106/5fe0b5adb1201f395b399e1d/html5/thumbnails/14.jpg)
Hotter Land: Bug or a Feature?
Friday, February 21, 14
![Page 15: SuperParameterized CESM: Multi-Instance LandIan Baker, Mark Branson, Don Dazlich, Dave Randall, Scott Denning, Cheryl Craig, Jim Edwards, Mariana Vertenstein, Brian Eaton, and many](https://reader036.vdocuments.net/reader036/viewer/2022071106/5fe0b5adb1201f395b399e1d/html5/thumbnails/15.jpg)
Summary• We have distributed land working in SP-
CESM
• We still have work to do
- Tracers (CO2)
- code compliance
- testing
• Code should be available for checkout within 1 year
Friday, February 21, 14