Journal of Advances in Modeling Earth Systems (Dec 2019)
The Community Land Model Version 5: Description of New Features, Benchmarking, and Impact of Forcing Uncertainty
- David M. Lawrence,
- Rosie A. Fisher,
- Charles D. Koven,
- Keith W. Oleson,
- Sean C. Swenson,
- Gordon Bonan,
- Nathan Collier,
- Bardan Ghimire,
- Leo vanKampenhout,
- Daniel Kennedy,
- Erik Kluzek,
- Peter J. Lawrence,
- Fang Li,
- Hongyi Li,
- Danica Lombardozzi,
- William J. Riley,
- William J. Sacks,
- Mingjie Shi,
- Mariana Vertenstein,
- William R. Wieder,
- Chonggang Xu,
- Ashehad A. Ali,
- Andrew M. Badger,
- Gautam Bisht,
- Michiel van denBroeke,
- Michael A. Brunke,
- Sean P. Burns,
- Jonathan Buzan,
- Martyn Clark,
- Anthony Craig,
- Kyla Dahlin,
- Beth Drewniak,
- Joshua B. Fisher,
- Mark Flanner,
- Andrew M. Fox,
- Pierre Gentine,
- Forrest Hoffman,
- Gretchen Keppel‐Aleks,
- Ryan Knox,
- Sanjiv Kumar,
- Jan Lenaerts,
- L. Ruby Leung,
- William H. Lipscomb,
- Yaqiong Lu,
- Ashutosh Pandey,
- Jon D. Pelletier,
- Justin Perket,
- James T. Randerson,
- Daniel M. Ricciuto,
- Benjamin M. Sanderson,
- Andrew Slater,
- Zachary M. Subin,
- Jinyun Tang,
- R. Quinn Thomas,
- Maria Val Martin,
- Xubin Zeng
Affiliations
- David M. Lawrence
- Climate and Global Dynamics Laboratory National Center for Atmospheric Research Boulder CO USA
- Rosie A. Fisher
- Climate and Global Dynamics Laboratory National Center for Atmospheric Research Boulder CO USA
- Charles D. Koven
- Climate and Ecosystem Sciences Division Lawrence Berkeley National Laboratory Berkeley CA USA
- Keith W. Oleson
- Climate and Global Dynamics Laboratory National Center for Atmospheric Research Boulder CO USA
- Sean C. Swenson
- Climate and Global Dynamics Laboratory National Center for Atmospheric Research Boulder CO USA
- Gordon Bonan
- Climate and Global Dynamics Laboratory National Center for Atmospheric Research Boulder CO USA
- Nathan Collier
- Computer Science and Engineering Division Oak Ridge National Laboratory Oak Ridge TN USA
- Bardan Ghimire
- Climate and Ecosystem Sciences Division Lawrence Berkeley National Laboratory Berkeley CA USA
- Leo vanKampenhout
- Institute for Marine and Atmospheric Research Utrecht Utrecht University Utrecht The Netherlands
- Daniel Kennedy
- Department of Earth and Environmental Engineering Columbia University New York NY USA
- Erik Kluzek
- Climate and Global Dynamics Laboratory National Center for Atmospheric Research Boulder CO USA
- Peter J. Lawrence
- Climate and Global Dynamics Laboratory National Center for Atmospheric Research Boulder CO USA
- Fang Li
- International Center for Climate and Environmental Sciences, Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China
- Hongyi Li
- Department of Civil & Environmental Engineering University of Houston Houston TX USA
- Danica Lombardozzi
- Climate and Global Dynamics Laboratory National Center for Atmospheric Research Boulder CO USA
- William J. Riley
- Climate and Ecosystem Sciences Division Lawrence Berkeley National Laboratory Berkeley CA USA
- William J. Sacks
- Climate and Global Dynamics Laboratory National Center for Atmospheric Research Boulder CO USA
- Mingjie Shi
- Jet Propulsion Laboratory California Institute of Technology Pasadena CA USA
- Mariana Vertenstein
- Climate and Global Dynamics Laboratory National Center for Atmospheric Research Boulder CO USA
- William R. Wieder
- Climate and Global Dynamics Laboratory National Center for Atmospheric Research Boulder CO USA
- Chonggang Xu
- Los Alamos National Laboratory Los Alamos NM USA
- Ashehad A. Ali
- Department of Organismic and Evolutionary Biology Harvard University Cambridge MA USA
- Andrew M. Badger
- Cooperative Institute for Research in Environmental Sciences Boulder CO USA
- Gautam Bisht
- Climate and Ecosystem Sciences Division Lawrence Berkeley National Laboratory Berkeley CA USA
- Michiel van denBroeke
- Institute for Marine and Atmospheric Research Utrecht Utrecht University Utrecht The Netherlands
- Michael A. Brunke
- Department of Hydrology and Atmospheric Sciences University of Arizona Tucson AZ USA
- Sean P. Burns
- Department of Geography University of Colorado Boulder Boulder CO USA
- Jonathan Buzan
- Department of Earth, Atmospheric, and Planetary Sciences Purdue University West Lafayette IN USA
- Martyn Clark
- Climate and Global Dynamics Laboratory National Center for Atmospheric Research Boulder CO USA
- Anthony Craig
- Climate and Global Dynamics Laboratory National Center for Atmospheric Research Boulder CO USA
- Kyla Dahlin
- Department of Geography, Environment, and Spatial Sciences Michigan State University East Lansing MI USA
- Beth Drewniak
- Environmental Science Division Argonne National Laboratory Argonne IL USA
- Joshua B. Fisher
- Jet Propulsion Laboratory California Institute of Technology Pasadena CA USA
- Mark Flanner
- Department of Climate and Space Sciences and Engineering University of Michigan Ann Arbor MI USA
- Andrew M. Fox
- School of Natural Resources and the Environment University of Arizona Tucson AZ USA
- Pierre Gentine
- Department of Earth and Environmental Engineering Columbia University New York NY USA
- Forrest Hoffman
- Computer Science and Engineering Division Oak Ridge National Laboratory Oak Ridge TN USA
- Gretchen Keppel‐Aleks
- Climate and Space Sciences and Engineering University of Michigan Ann Arbor CA USA
- Ryan Knox
- Climate and Ecosystem Sciences Division Lawrence Berkeley National Laboratory Berkeley CA USA
- Sanjiv Kumar
- School of Forestry and Wildlife Sciences Auburn University Auburn AL USA
- Jan Lenaerts
- Department of Atmospheric and Oceanic Sciences University of Colorado Boulder Boulder CO USA
- L. Ruby Leung
- Atmospheric Sciences and Global Change Division Pacific Northwest National Laboratory Richland WA USA
- William H. Lipscomb
- Climate and Global Dynamics Laboratory National Center for Atmospheric Research Boulder CO USA
- Yaqiong Lu
- Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu China
- Ashutosh Pandey
- School of Forestry and Wildlife Sciences Auburn University Auburn AL USA
- Jon D. Pelletier
- Department of Geosciences University of Arizona Tucson AZ USA
- Justin Perket
- Climate and Global Dynamics Laboratory National Center for Atmospheric Research Boulder CO USA
- James T. Randerson
- Department of Earth System Science University of California Irvine CA USA
- Daniel M. Ricciuto
- Environmental Sciences Division Oak Ridge National Laboratory Oak Ridge TN USA
- Benjamin M. Sanderson
- CERFACS Toulouse France
- Andrew Slater
- National Snow and Ice Data Center Boulder CO USA
- Zachary M. Subin
- Energy & Environmental Economics San Francisco CA USA
- Jinyun Tang
- Climate and Ecosystem Sciences Division Lawrence Berkeley National Laboratory Berkeley CA USA
- R. Quinn Thomas
- Department of Forest Resources and Environmental Conservation Virginia Polytechnic Institute and State University Blacksburg VA USA
- Maria Val Martin
- Leverhulme Centre for Climate Change Mitigation, Animal and Plant Sciences Department University of Sheffield Sheffield UK
- Xubin Zeng
- Department of Hydrology and Atmospheric Sciences University of Arizona Tucson AZ USA
- DOI
- https://doi.org/10.1029/2018MS001583
- Journal volume & issue
-
Vol. 11,
no. 12
pp. 4245 – 4287
Abstract
Abstract The Community Land Model (CLM) is the land component of the Community Earth System Model (CESM) and is used in several global and regional modeling systems. In this paper, we introduce model developments included in CLM version 5 (CLM5), which is the default land component for CESM2. We assess an ensemble of simulations, including prescribed and prognostic vegetation state, multiple forcing data sets, and CLM4, CLM4.5, and CLM5, against a range of metrics including from the International Land Model Benchmarking (ILAMBv2) package. CLM5 includes new and updated processes and parameterizations: (1) dynamic land units, (2) updated parameterizations and structure for hydrology and snow (spatially explicit soil depth, dry surface layer, revised groundwater scheme, revised canopy interception and canopy snow processes, updated fresh snow density, simple firn model, and Model for Scale Adaptive River Transport), (3) plant hydraulics and hydraulic redistribution, (4) revised nitrogen cycling (flexible leaf stoichiometry, leaf N optimization for photosynthesis, and carbon costs for plant nitrogen uptake), (5) global crop model with six crop types and time‐evolving irrigated areas and fertilization rates, (6) updated urban building energy, (7) carbon isotopes, and (8) updated stomatal physiology. New optional features include demographically structured dynamic vegetation model (Functionally Assembled Terrestrial Ecosystem Simulator), ozone damage to plants, and fire trace gas emissions coupling to the atmosphere. Conclusive establishment of improvement or degradation of individual variables or metrics is challenged by forcing uncertainty, parametric uncertainty, and model structural complexity, but the multivariate metrics presented here suggest a general broad improvement from CLM4 to CLM5.
Keywords
