[PULL REQUEST] More stable stratospheric H2O boundary condition #689
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By selecting the "static" H2O option in input.geos, the user can now request that stratospheric water vapor be specified up to 70 hPa in the tropics. This results in a more stable water vapor signal in the stratosphere. If this option is not selected, the water vapor in the stratosphere may grow continuously over multi-year simulations.
yantosca
changed the title
msulprizio
approved these changes
Apr 21, 2021
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NOTE: I moved the switch for this option to the Chemistry Menu in input.geos since the Emissions Menu was removed in 13.0.0. |
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By selecting the "static" H2O option in input.geos, the user can now request that stratospheric water vapor be specified up to 70 hPa in the tropics. This results in a more stable water vapor signal in the stratosphere. If this option is not selected, the water vapor in the stratosphere may grow continuously over multi-year simulations.
The change significantly reduces the accumulation when running a full-chemistry simulation at C24 in GCHP (see plot; old approach on the right, new approach on the left).