Publication Abstracts

Singh et al. 2016

Singh, H.K.A., C.M. Bitz, A. Donohoe, J. Nusbaumer, and D.C. Noone, 2016: A mathematical framework for analysis of water tracers. Part II: Understanding large-scale perturbations in the hydrological cycle due to CO2 doubling. J. Climate, 29, no. 18, 6765-6782, doi:10.1175/JCLI-D-16-0293.1.

The aerial hydrological cycle response to CO2 doubling from a Lagrangian, rather than Eulerian, perspective is evaluated using information from numerical water tracers implemented in a global climate model. While increased surface evaporation (both local and remote) increases precipitation globally, changes in transport are necessary to create a spatial pattern where precipitation decreases in the subtropics and increases substantially at the equator. Overall, changes in the convergence of remotely evaporated moisture are more important to the overall precipitation change than changes in the amount of locally evaporated moisture that precipitates in situ. It is found that CO2 doubling increases the fraction of locally evaporated moisture that is exported, enhances moisture exchange between ocean basins, and shifts moisture convergence within a given basin toward greater distances between moisture source (evaporation) and sink (precipitation) regions. These changes can be understood in terms of the increased residence time of water in the atmosphere with CO2 doubling, which corresponds to an increase in the advective length scale of moisture transport. As a result, the distance between where moisture evaporates and where it precipitates increases. Analyses of several heuristic models further support this finding.

Export citation: [ BibTeX ] [ RIS ]

BibTeX Citation

@article{si05200z,
  author={Singh, H. K. A. and Bitz, C. M. and Donohoe, A. and Nusbaumer, J. and Noone, D. C.},
  title={A mathematical framework for analysis of water tracers. Part II: Understanding large-scale perturbations in the hydrological cycle due to CO2 doubling},
  year={2016},
  journal={J. Climate},
  volume={29},
  number={18},
  pages={6765--6782},
  doi={10.1175/JCLI-D-16-0293.1},
}

[ Close ]

RIS Citation

TY  - JOUR
ID  - si05200z
AU  - Singh, H. K. A.
AU  - Bitz, C. M.
AU  - Donohoe, A.
AU  - Nusbaumer, J.
AU  - Noone, D. C.
PY  - 2016
TI  - A mathematical framework for analysis of water tracers. Part II: Understanding large-scale perturbations in the hydrological cycle due to CO2 doubling
JA  - J. Climate
VL  - 29
IS  - 18
SP  - 6765
EP  - 6782
DO  - 10.1175/JCLI-D-16-0293.1
ER  -

[ Close ]

• Return to 2016 Publications

• Return to Publications Homepage