High latitude river runoff in a doubled CO2 climate

Scott C. Van Blarcum, James R. Miller, Gary L. Russell

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


A global atmospheric model is used to calculate the monthly river flow for nine of the world's major high latitude rivers for the present climate and for a doubled CO2 climate. The model has a horizontal resolution of 4° × 5°, but the model's runoff from each grid box is quartered and added to the appropriate river drainage basin on a 2° × 2.5° resolution. A routing scheme is used to move runoff from a grid box to its neighboring downstream grid box and ultimately to the mouth of the river. In a model simulation in which atmospheric carbon dioxide is doubled, mean annual precipitation and river flow increase for all of these rivers, increased outflow at the river mouths begins earlier in the spring, and the maximum outflow occurs approximately one month sooner due to an earlier snow melt season. In the doubled CO2 climate, snow mass decreases for the Yukon and Mackenzie rivers in North America and for rivers in northwestern Asia, but snow mass increases for rivers in northeastern Asia.

Original languageEnglish (US)
Pages (from-to)7-26
Number of pages20
JournalClimatic Change
Issue number1
StatePublished - May 1995

All Science Journal Classification (ASJC) codes

  • Global and Planetary Change
  • Atmospheric Science


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