Climate change from the perspective of the surface energy balance and global hydrologic cycle
Abstract
Major changes have occurred in the radiative drive of the surface since preindustrial times owing to both changes in the emissions of greenhouse gases and aerosols. These are to be contrasted with the drive at the top-of-the-atmosphere. Using global climate models and multiple observations of the surface fluxes from various platforms, we discuss how the energy balance has evolved with time and the manner in which this has affected the hydrologic cycle, including an account of the critical uncertainties. We make use of the simulations performed with global climate models and used in the IPCC assessments to diagnose the factors that are principally responsible for the changes, the contrasting atmospheric mechanisms exerted by greenhouse gases and aerosols, and the relative roles of the atmospheric constituents.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2015
- Bibcode:
- 2015AGUFM.A23K..02R
- Keywords:
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- 0360 Radiation: transmission and scattering;
- ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 3311 Clouds and aerosols;
- ATMOSPHERIC PROCESSES;
- 3359 Radiative processes;
- ATMOSPHERIC PROCESSES;
- 1694 Instruments and techniques;
- GLOBAL CHANGE