CESM2

The Community Earth System Model version 2 (CESM2) is a global climate model developed by the National Center for Atmospheric Research (NCAR) and the Community Earth System Model (CESM) project. It is a next-generation climate model designed to simulate Earth's climate system and predict future changes in the planet's climate.

CESM2 is an improvement over its predecessor, CESM1, with several new features and updates. One of the main updates is the addition of a new atmosphere model, which includes improved representation of clouds and aerosols. The model also includes updates to the land model, which now includes a more detailed representation of carbon and nutrient cycling.

CESM2 is designed to be compatible with the Earth System Modeling Framework (ESMF), which allows for easier integration with other climate models and observational data. The model is also modular, allowing users to select and customize components to meet their specific research needs.

CESM2 has been used to simulate a wide range of climate scenarios, including historical climate simulations, future projections, and ensemble simulations. The model has been applied to a variety of research topics, including climate change, ocean acidification, and sea-level rise.

CESM2 has undergone rigorous testing and validation, and has been widely used in the climate research community. The model is publicly available, and a user's guide and documentation are provided. The CESM2 source code is released under an open-source license, allowing for community development and contributions.

Overall, CESM2 is a powerful and flexible climate model that has been widely adopted in the climate research community. Its advanced features and modular design make it a valuable tool for a wide range of climate research applications.