Skip to main content

IMIS

A new integrated search interface will become available in the next phase of marineinfo.org.
For the time being, please use IMIS to search available data

 

[ report an error in this record ]basket (0): add | show Print this page

The climate effects of increasing ocean albedo: an idealized representation of solar geoengineering
Kravitz, B.; Rasch, P.J.; Wang, H.; Robock, A.; Gabriel, C.; Boucher, O.; Cole, J.N.S.; Haywood, J.; Ji, D.; Jones, A.; Lenton, A.; Moore, J.C.; Muri, H.; Niemeier, U.; Phipps, S.; Schmidt, H.; Watanabe, S.; Yang, S.; Yoon, J.-H. (2018). The climate effects of increasing ocean albedo: an idealized representation of solar geoengineering. Atmos. Chem. Phys. 18(17): 13097-13113. https://dx.doi.org/10.5194/acp-18-13097-2018
In: Atmospheric Chemistry and Physics. Copernicus Publ: Göttingen. ISSN 1680-7316; e-ISSN 1680-7324, more
Peer reviewed article  

Available in  Authors 

Keyword
    Marine/Coastal

Authors  Top 
  • Kravitz, B.
  • Rasch, P.J.
  • Wang, H.
  • Robock, A.
  • Gabriel, C.
  • Boucher, O.
  • Cole, J.N.S.
  • Haywood, J.
  • Ji, D.
  • Jones, A.
  • Lenton, A.
  • Moore, J.C.
  • Muri, H., more
  • Niemeier, U.
  • Phipps, S.
  • Schmidt, H.
  • Watanabe, S.
  • Yang, S.
  • Yoon, J.-H.

Abstract
    Geoengineering, or climate intervention, describes methods of deliberately altering the climate system to offset anthropogenic climate change. As an idealized representation of near-surface solar geoengineering over the ocean, such as marine cloud brightening, this paper discusses experiment G1ocean-albedo of the Geoengineering Model Intercomparison Project (GeoMIP), involving an abrupt quadrupling of the CO2 concentration and an instantaneous increase in ocean albedo to maintain approximate net top-of-atmosphere radiative flux balance. A total of 11 Earth system models are relatively consistent in their temperature, radiative flux, and hydrological cycle responses to this experiment. Due to the imposed forcing, air over the land surface warms by a model average of 1.14 K, while air over most of the ocean cools. Some parts of the near-surface air temperature over ocean warmdue to heat transport from land to ocean. These changes generally resolve within a few years, indicating that changes in ocean heat content play at most a small role in the warming over the oceans. The hydrological cycle response is a general slowing down, with high heterogeneity in the response, particularly in the tropics. While idealized, these results have important implications for marine cloud brightening, or other methods of geoengineering involving spatially heterogeneous forcing, or other general forcings with a strong land–ocean contrast. It also reinforces previous findings that keeping top-of-atmosphere net radiative flux constant is not sufficient for preventing changes in global mean temperature.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors