Editing Community Climate System Model (section)

==Submodels==

===Ocean model (docn6)===
The Climatological Data Ocean Model {{proper name|(docn)}} is recently{{when|date=May 2023}} at version{{nbsp}}6.0. It must be run within the framework of CCSM rather than standalone.<ref name="Oceanmodel" /> It takes two [[netCDF]] datasets as input and sends six outputs to the coupler, to be integrated with the output of the other submodels.<ref>{{cite web |url=http://www.ccsm.ucar.edu/models/ccsm3.0/docn6/ |title=docn6 User's Guide |author=NCAR |access-date= 2016-12-11}}</ref>

===Atmosphere model (CAM)===
The Community Atmosphere Model (CAM) can also be run as a standalone atmosphere model. Its most current version is 3.1, while 3.0 was the fifth generation. On May 17, 2002, its name was changed from the NCAR Community Climate Model to reflect its role in the new system.<ref>{{cite web|url=http://www.ccsm.ucar.edu/models/atm-cam/docs/usersguide/|archive-url=https://web.archive.org/web/20040811042943/http://www.ccsm.ucar.edu/models/atm-cam/docs/usersguide/|url-status=dead|archive-date=2004-08-11|title=CAM User's Guide|author=NCAR <!-- |access-date= March 2009 -->}} </ref> It shares the same horizontal grid as the land model of CCSM: a 256×128 regular longitude/latitude global horizontal grid (giving a 1.4 degree resolution). It has 26 levels in the vertical.<ref>{{cite web |url=http://www.ccsm.ucar.edu/models/ccsm3.0/ccsm3.0_faq.html|title=CCSM3.0 FAQs |author=NCAR |access-date= 2016-12-11}}</ref>

=== Sea Ice Model (CICE) ===
The polar component of ocean-atmosphere coupling includes sea ice [[geophysics]] using the formerly-known Los Alamos Sea Ice Model, [[CICE (sea ice model)|CICE]], now often referred to as the CICE Consortium model, to which NCAR has contributed code and physical improvements through the Polar Climate Working Group.<ref>{{Cite journal|last1=Bailey|first1=D. A.|last2=Holland|first2=M. M.|author-link2=Marika Holland|last3=DuVivier|first3=A. K.|date=2017-12-01|title=The Community Earth System Model-Polar Climate Working Group and the status of CESM2.|journal=AGU Fall Meeting Abstracts|volume=21|pages=C21B–1118|bibcode=2017AGUFM.C21B1118B}}</ref> CICE simulates the growth, movement, deformation and melt of [[sea ice]], critical for calculating energy and mass fluxes between the polar atmosphere and oceans in the [[Earth system science|earth system]].<ref>{{Citation|last=Untersteiner|first=Norbert|chapter=The Geophysics of Sea Ice: Overview|date=1986|pages=1–8|publisher=Springer US|isbn=9781489953544|doi=10.1007/978-1-4899-5352-0_1|title=The Geophysics of Sea Ice}}</ref><ref>{{Cite journal|last1=Holland|first1=Marika M.|last2=Finnis|first2=Joel|last3=Serreze|first3=Mark C.|date=2006|title=Simulated Arctic Ocean Freshwater Budgets in the Twentieth and Twenty-First Centuries|journal=Journal of Climate|volume=19|issue=23|pages=6221–6242|doi=10.1175/jcli3967.1|bibcode=2006JCli...19.6221H |issn=0894-8755|doi-access=free}}</ref><ref>{{Cite journal|last1=Holland|first1=Marika M.|last2=Bailey|first2=David A.|last3=Briegleb|first3=Bruce P.|last4=Light|first4=Bonnie|last5=Hunke|first5=Elizabeth|date=2012|title=Improved Sea Ice Shortwave Radiation Physics in CCSM4: The Impact of Melt Ponds and Aerosols on Arctic Sea Ice*|journal=Journal of Climate|volume=25|issue=5|pages=1413–1430|doi=10.1175/jcli-d-11-00078.1|bibcode=2012JCli...25.1413H |issn=0894-8755|doi-access=free}}</ref>