Comment on 'Heat capacity, time constant, and sensitivity of Earth's climate system' by S. E. Schwartz
| Autor: | Grant Foster, James D. Annan, Gavin A. Schmidt, Michael E. Mann |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Atmospheric Science
Soil Science Markov process Aquatic Science Oceanography Heat capacity symbols.namesake Geochemistry and Petrology Earth and Planetary Sciences (miscellaneous) Applied mathematics Sensitivity (control systems) Earth-Surface Processes Water Science and Technology Mathematics Ecology Global temperature Autocorrelation Paleontology Forestry Radiative forcing Geophysics Space and Planetary Science Climatology symbols Climate sensitivity Ocean heat content |
| Zdroj: | Journal of Geophysical Research. 113 |
| ISSN: | 0148-0227 |
| DOI: | 10.1029/2007jd009373 |
| Popis: | [1] In a recent paper, Schwartz [2007] (hereinafter referred to as S07) estimated climate sensitivity using globally averaged observed time series. He estimated the planet’s effective heat capacity and ‘‘pertinent time constant’’ from ocean heat content and observed global temperature records, assuming that the latter can be modeled as a firstorder Markov (AR(1)) process after removing the trend due to climate forcing by subtracting a linear trend. [2] As S07 correctly states, the autocorrelation of an AR(1) process at lag Dt follows the simple relation |
| Databáze: | OpenAIRE |
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