add new formula for rsut and rsutcs

E3SM-Project / e3sm_to_cmip

Tools to CMORize E3SM output

https://e3sm-to-cmip.readthedocs.io/en/latest/

MIT License

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add new formula for rsut and rsutcs #210

Closed chengzhuzhang closed 1 year ago

chengzhuzhang commented 1 year ago

FSUTOA and FSUTOAC are used in e3sm_to_cmip for directly getting rsut and rsutcs. For v3 output, both FSUTOA and FSUTOAC are removed. This PR is to update formula to use available variables, i.e., rsut = SOLIN - FSNTOA, and rsutcs = SOLIN - FSNTOAC

chengzhuzhang commented 1 year ago

Comparing using both sets of formula, the difference is small around 0- 0.001 W/m2 for rsut. I think that small difference is expected by using online derived quantity vs offline derived, and is acceptable.