Evidence of O2 consumption in underway seawater lines: Implications for air-sea O2 and CO2 fluxes

Details Evidence of O2 consumption in underway seawater lines: Implications for air-sea O2 and CO2 fluxes Evidence of O2 consumption in underway seawater lines: Implications for air-sea O2 and CO2 fluxes

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010georl..3701601j&link_type=abstract

Geophysical Research Letters, Volume 37, Issue 1, CiteID L01601

Mathematics

Logic

4

Oceanography: Biological And Chemical: Biogeochemical Cycles, Processes, And Modeling (0412, 0414, 0793, 1615, 4912), Oceanography: Biological And Chemical: Carbon Cycling (0428), Oceanography: Biological And Chemical: Gases, Oceanography: General: Ocean Observing Systems

Scientific paper

We observed O2 deficits of 0.5 to 2.0% (1 to 4 μmol/kg) in the underway seawater lines of three different ships. Deficits in O2/Ar and isotopic enrichments in dissolved O2 observed in underway seawater lines indicate a respiratory removal process. A 1% respiratory bias in underway lines would lead to a 2.5-5 μatm (2.5-5 μbar) enhancement in surface water pCO2. If an underway pCO2 bias of this magnitude affected all measurements, the global oceanic carbon uptake based on pCO2 climatologies would be 0.5-0.8 Pg/yr higher than the present estimate of 1.6 Pg/yr. Treatment of underway lines with bleach for several hours and thorough flushing appeared to minimize O2 loss. Given the increasing interest in underway seawater measurements for the determination of surface CO2 and O2 fluxes, respiration in underway seawater lines must be identified and eliminated on all observing ships to ensure unbiased data.

Affiliated with

Also associated with

No associations

Rating

Evidence of O2 consumption in underway seawater lines: Implications for air-sea O2 and CO2 fluxes does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Evidence of O2 consumption in underway seawater lines: Implications for air-sea O2 and CO2 fluxes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evidence of O2 consumption in underway seawater lines: Implications for air-sea O2 and CO2 fluxes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1445382