esmtools.carbon.spco2_decomposition

esmtools.carbon.spco2_decomposition(ds_terms, detrend=True, order=1, deseasonalize=False)[source]

Decompose oceanic surface pco2 in a first order Taylor-expansion.

Parameters:
  • ds_terms (xr.Dataset) – containing cmorized variables: spco2 [ppm]: ocean pCO2 at surface talkos[mmol m-3]: Alkalinity at ocean surface dissicos[mmol m-3]: DIC at ocean surface tos [C] : temperature at ocean surface sos [psu] : salinity at ocean surface
  • detrend (bool) – If True, detrend when generating anomalies. Default to a linear (order 1) regression.
  • order (int) – If detrend is true, the order polynomial to remove from your time series.
  • deseasonalize (bool) – If True, deseasonalize when generating anomalies.
Returns:

terms of spco2 decomposition
Return type:

terms_in_pCO2_units (xr.Dataset)

References

  • Lovenduski, Nicole S., Nicolas Gruber, Scott C. Doney, and Ivan D. Lima. “Enhanced CO2 Outgassing in the Southern Ocean from a Positive Phase of the Southern Annular Mode.” Global Biogeochemical Cycles 21, no. 2 (2007). https://doi.org/10/fpv2wt.