Abstract:
AM3 (Donner et al., 2011), the atmospheric component of the GFDL coupled model CM3, was designed with an awareness of key emerging issues in climate science, including aerosol-cloud interactions in climate and climate change, chemistry-climate feedbacks, land and ocean carbon cycles and their interactions with climate change, and decadal prediction. It is GFDL's first global atmospheric model to ... include cloud-aerosol interactions, with 20 interactive aerosol species. AM3 includes interactive tropospheric and stratospheric chemistry (85 species). AM3 uses emissions to drive its chemistry and aerosols. Its inclusion of stratospheric chemistry and dynamics will enable possible interactions between the stratosphere and troposphere on interannual scales to be included in future studies of decadal predictability. Its stratosphere has increased vertical resolution over AM2, with the uppermost level at about 1 Pascal. AM3's improved simulation of Amazon precipitation will enhance future coupling into an earth-system model.
AM3 uses a cubed-sphere implementation of the finite-volume dynamical core. Earth's atmosphere is represented as a cube with six rectangular faces. There is no singularity associated with the north and south poles as with the spherical representation. Computationally, the core is highly scalable and efficient at advecting the large number of tracers associated with AM3's chemistry and aerosols.
AM3 uses physically based aerosol activation (Ming et al., 2006) to form cloud droplets. All cloud parameterizations in AM2 were either replaced or augmented to include sub-grid distributions of vertical velocity required for these activation calculations. Sub-grid distributions of vertical velocity are included in AM3's stratiform clouds (Golaz et al., 2011); deep convection (Donner et al., 2001, and Wilcox and Donner, 2007) represented by an ensemble of plumes with mass fluxes and vertical velocities, simple bulk microphysics, and mesoscale updrafts and downdrafts; and shallow convection after Bretherton et al. (2004, Mon. Wea. Rev.) with buoyancy sorting, entraining plumes and vertical velocity.
Name:
GFDL USER SUPPORT
Phone:
609-452-6500
Fax:
609-987-5063
Email:
help at gfdl.noaa.gov
Email:
GFDL.Climate.Model.Info at noaa.gov
Contact Address:
Geophysical Fluid Dynamics Laboratory/NOAA
Princeton University
201 Forrestal Road
Campus/Rte. 1
P.O. Box 308 City:
Princeton
Province or State:
NJ
Postal Code:
08542
Country:
USA
Distribution Media
Distribution_Media:
Online
Fees:
No fees
Personnel
GFDL USER SUPPORT Role:
TECHNICAL CONTACT
Phone:
609-452-6500
Fax:
609-987-5063
Email:
help at gfdl.noaa.gov
Email:
GFDL.Climate.Model.Info at noaa.gov
Contact Address:
Geophysical Fluid Dynamics Laboratory/NOAA
Princeton University
201 Forrestal Road
Campus/Rte. 1
P.O. Box 308 City:
Princeton
Province or State:
NJ
Postal Code:
08542
Country:
USA
TYLER
B.
STEVENS Role:
SERF AUTHOR
Phone:
(301) 614-6898
Fax:
301-614-5268
Email:
Tyler.B.Stevens at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Global Change Master Directory City:
Greenbelt
Province or State:
MD
Postal Code:
20771
Country:
USA
Publications/References
Kamimura A. and H. Kitagawa(1989） : Full-scale measurement on board Antarctic research vessel “Shirase”, 54th general meeting of the Ship Research Institute 7-14 (in Japanese). Shimoda, H., T. Endoh, K. Muramoto, N. Ono, T. Takizawa, S. Ushio, T. Kawamura and K.I. Ohshima. （1997） : Observation of Sea-ice Conditions in the Antarctic Coastal Region ... Using Ship-board Video Cameras. Antarctic Record, 41 (1), 355-365 (in Japanese). Uto S., H. Shimoda and K. Izumiyama (2003) : Sea Ice Thickness and Snow Depth Distribution of the Summer Land-fast Ice in Lutzow-holm Bay, East Antarctica, Proc. 17th International Conference on Port and Ocean Engineering under Arctic Conditions, 1, 175-183. Uto S., H. Shimoda, K. Izumiyama.、S. Ushio, S. Aoki, G. Hashida, H. Wakabayashi. and F. Nishio (2004) : Characteristics of Sea Ice Thickness and Snow Depth Distributions of Land-fast Ice during Summer in Lützow-Holmbukta, Antarctica, revealed from Ship-based Observations, Antarctic record, 48 (3), 165-179 (in Japanese) Uto, S., H. Shimoda and S. Ushio （2006） : Characteristics of Sea Ice Thickness and Snow Depth Distributions of the Summer Land-fast Ice in Lützow-Holmbukta, East Antarctica. Annals of Glaciology, 44, 281-287. Uto, S., H. Shimoda, S. Aoki, S. Ushio, F. Nishio, H. Wakabayashi, G. Hashida, K..G. Azuma, A. Furusaki and K. Tateyama : Sea Ice Thickness and Snow Depth Data Collected by the Ship-based Video Observations from 29th to 48th Japanese Antarctic Research Expedition, JARE data report (in print)
Creation and Review Dates
SERF Creation Date:
2012-06-05
SERF Last Revision Date:
2012-06-07
Links
