Community Earth System Model

Community Earth System Model is a fully-coupled, global climate model that simulates the Earth's climate system, including the interactions between the atmosphere, oceans, land surface, and cryosphere. The model is developed and maintained by the University Corporation for Atmospheric Research (UCAR) and is widely used by the climate science community, including researchers at the National Center for Atmospheric Research (NCAR), National Oceanic and Atmospheric Administration (NOAA), and the National Aeronautics and Space Administration (NASA). The model is also used by the Intergovernmental Panel on Climate Change (IPCC) to simulate future climate change scenarios, such as those described in the Special Report on Global Warming of 1.5°C.

Introduction

The Community Earth System Model is a state-of-the-art Earth system model that is used to simulate the Earth's climate system and predict future climate change. The model is based on the National Center for Atmospheric Research (NCAR) Climate System Model (CSM) and has been developed in collaboration with the University of Colorado Boulder, Massachusetts Institute of Technology (MIT), and the California Institute of Technology (Caltech). The model is designed to simulate the interactions between the atmosphere, oceans, land surface, and cryosphere, and is used by researchers at institutions such as the National Oceanic and Atmospheric Administration (NOAA), National Aeronautics and Space Administration (NASA), and the European Centre for Medium-Range Weather Forecasts (ECMWF). The model has been used to simulate a wide range of climate change scenarios, including those described in the Fifth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC) and the Paris Agreement.

Model Overview

The Community Earth System Model is a fully-coupled, global climate model that simulates the Earth's climate system on a wide range of timescales, from weather to climate change. The model is based on a set of dynamical systems equations that describe the behavior of the atmosphere, oceans, land surface, and cryosphere, and is solved using a combination of numerical methods and high-performance computing techniques. The model is designed to simulate the interactions between the different components of the Earth's climate system, including the atmospheric circulation, ocean currents, and land surface processes, and is used by researchers at institutions such as the National Center for Atmospheric Research (NCAR), University of California, Los Angeles (UCLA), and the University of Oxford. The model has been used to simulate a wide range of climate change scenarios, including those described in the Special Report on Global Warming of 1.5°C and the IPCC Fourth Assessment Report.

Components and Architecture

The Community Earth System Model consists of a number of components, including the atmospheric model, ocean model, land surface model, and cryosphere model. The atmospheric model is based on the NCAR Community Atmosphere Model (CAM) and simulates the behavior of the atmosphere on a wide range of timescales, from weather to climate change. The ocean model is based on the NCAR Community Ocean Model (COM) and simulates the behavior of the oceans on a wide range of timescales, from tides to climate change. The land surface model is based on the NCAR Community Land Model (CLM) and simulates the behavior of the land surface on a wide range of timescales, from hydrology to ecosystem processes. The cryosphere model is based on the NCAR Community Ice Sheet Model (CISM) and simulates the behavior of the cryosphere on a wide range of timescales, from glacier dynamics to sea level rise. The model is designed to simulate the interactions between the different components of the Earth's climate system, including the atmospheric circulation, ocean currents, and land surface processes, and is used by researchers at institutions such as the University of Washington, Harvard University, and the Massachusetts Institute of Technology (MIT).

Applications and Research

The Community Earth System Model has a wide range of applications and is used by researchers at institutions such as the National Center for Atmospheric Research (NCAR), National Oceanic and Atmospheric Administration (NOAA), and the National Aeronautics and Space Administration (NASA). The model is used to simulate future climate change scenarios, such as those described in the Special Report on Global Warming of 1.5°C and the IPCC Fifth Assessment Report. The model is also used to study the impacts of climate change on ecosystems, biodiversity, and human health, and is used by researchers at institutions such as the University of California, Berkeley, Stanford University, and the University of Cambridge. The model has been used to simulate the behavior of the Earth's climate system on a wide range of timescales, from weather to climate change, and is used by researchers at institutions such as the European Centre for Medium-Range Weather Forecasts (ECMWF), Met Office Hadley Centre, and the Max Planck Institute for Meteorology.

Development and Community

The Community Earth System Model is developed and maintained by the University Corporation for Atmospheric Research (UCAR) and is widely used by the climate science community. The model is designed to be a community-driven model, with contributions from researchers at institutions such as the National Center for Atmospheric Research (NCAR), University of Colorado Boulder, and the California Institute of Technology (Caltech). The model is released under an open-source license, allowing researchers to modify and extend the model as needed. The model has a large and active user community, with researchers at institutions such as the University of Oxford, Harvard University, and the Massachusetts Institute of Technology (MIT) contributing to the development and testing of the model. The model is also used by the Intergovernmental Panel on Climate Change (IPCC) to simulate future climate change scenarios, and is used by researchers at institutions such as the National Oceanic and Atmospheric Administration (NOAA) and the National Aeronautics and Space Administration (NASA).

Evaluation and Validation

The Community Earth System Model is evaluated and validated using a wide range of metrics and datasets, including satellite observations, in situ measurements, and reanalysis datasets. The model is designed to simulate the behavior of the Earth's climate system on a wide range of timescales, from weather to climate change, and is evaluated using metrics such as mean absolute error and root mean square error. The model is also validated using datasets such as the NASA Earth Observing System (EOS) and the National Centers for Environmental Prediction (NCEP) reanalysis dataset. The model has been used to simulate a wide range of climate change scenarios, including those described in the Special Report on Global Warming of 1.5°C and the IPCC Fifth Assessment Report, and is used by researchers at institutions such as the University of California, Los Angeles (UCLA), Stanford University, and the University of Cambridge. The model is also used by the Intergovernmental Panel on Climate Change (IPCC) to simulate future climate change scenarios, and is used by researchers at institutions such as the National Oceanic and Atmospheric Administration (NOAA) and the National Aeronautics and Space Administration (NASA). Category:Climate models