Implementing and Evaluating Variable Soil Thickness in the Community Land Model, Version 4.5 (CLM4.5)
نویسندگان
چکیده
منابع مشابه
Parameterization Improvements and Functional and Struc- tural Advances in Version 4 of the Community Land Model
1 NCAR Earth System Laboratory, Climate and Global Dynamics Division, National Center for Atmospheric Research, Boulder, CO, USA 2 Department of Atmospheric, Oceanic, and Space Sciences, University of Michigan, Ann Arbor, MI, USA 3 Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA 4 Department of Atmospheric Sciences, University of Arizona, Tuscon, AZ, USA 5 Dep...
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In this paper we describe our extensive efforts to rewrite the Community Land Model (CLM) so that it provides good vector performance on the Earth Simulator in Japan and the Cray X1 at Oak Ridge National Laboratory. We present the technical details of the old and new internal data structures, the required code reorganization, and the resulting performance improvements. We describe and compare t...
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Soil organic matter (SOM) is the largest store of organic carbon (C) in the biosphere, but the turnover of SOM is still incompletely understood and not well described in global C cycle models. Here we use the Community Land Model (CLM) and compare the output for soil organic C stocks (SOC) to estimates from a global data set. We also modify the assumptions about SOC turnover in two ways: (1) we...
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[1] Many studies have shown the deficiencies of the extended Kalman filter (EKF), even though it has become a standard technique used in nonlinear estimation. In the EKF method, the state distribution is propagated analytically through the first-order linearization of the nonlinear system, which can introduce large errors in variable estimation and may lead to suboptimal performance and sometim...
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ژورنال
عنوان ژورنال: Journal of Climate
سال: 2016
ISSN: 0894-8755,1520-0442
DOI: 10.1175/jcli-d-15-0307.1