The changing patters of ΔpCO2 between ocean and atmosphere

T. Volk, R. Bacastow

Research output: Contribution to journalArticle

Abstract

This work assess regional variations in the Earth scale patterns of sources (ΔpCO2>0) and sinks (ΔpCO2<0) during this anthropogenic transient. The regional correction, ΔpCO2 *, is defined as the quantity that must be added to a region's preanthropogenic ΔpCO2 to give its present value. Using a five-box ocean model with special surface regions for the prominent equatorial Pacific source and north Altantic sink, we show that a larger magnitude of ΔpCO2 * is necessary for these two regions than for the average ocean. Analytical results with a multiple one-and-one-half-box model, in which horizontal water exchanges are neglected, indicate that the ratio of ΔpCO2 * values for any two regions should vary inversely with the ratio of their gas exchange coefficients and nearly directly with the ratio of their deep-to-surface water piston velocities. The ΔpCO2 * values for regions of the five-box model vary by as much as a factor of six; predictions of the multiple one-and-one-half-box model are within a factor of two. -from Authors

Original languageEnglish (US)
Pages (from-to)179-189
Number of pages11
JournalGlobal Biogeochemical Cycles
Volume3
Issue number2
StatePublished - 1989

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atmosphere
ocean
Surface waters
Pistons
water exchange
gas exchange
Gases
Earth (planet)
Water
surface water
prediction

ASJC Scopus subject areas

  • Global and Planetary Change
  • Atmospheric Science
  • Environmental Science(all)
  • Environmental Chemistry

Cite this

The changing patters of ΔpCO2 between ocean and atmosphere. / Volk, T.; Bacastow, R.

In: Global Biogeochemical Cycles, Vol. 3, No. 2, 1989, p. 179-189.

Research output: Contribution to journalArticle

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