Record Details
High-resolution estimates of net community production and air-sea CO₂ flux in the northeast Pacific
ScholarsArchive at Oregon State University
| Field | Value |
|---|---|
| Title | High-resolution estimates of net community production and air-sea CO₂ flux in the northeast Pacific |
| Names |
Lockwood, Deirdre
(creator) Quay, Paul D. (creator) Kavanaugh, Maria T. (creator) Juranek, Lauren W. (creator) Feely, Richard A. (creator) |
| Date Issued | 2012-10-30 (iso8601) |
| Note | This is the publisher’s final pdf. The published article is copyrighted by the American Geophysical Union and can be found at: http://www.agu.org/journals/gb/index.shtml. To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. |
| Abstract | Rates of net community production (NCP) and air-sea CO₂ flux in the Northeast Pacific subarctic, transition zone and subtropical regions (22°N–50°N, 145°W–152°W) were determined on a cruise in August–September 2008 by continuous measurement of surface values of the ratio of dissolved oxygen to argon (O₂/Ar) and the partial pressure of CO₂ (pCO₂). These estimates were compared with simultaneous measurements of sea surface temperature (SST), chlorophyll-a (chl-a), flow cytometry, and discrete surface nutrient concentrations. NCP and CO₂ influx were greatest in the subarctic (45°N–50°N, 25.8 ± 4.6 and 4.1 ± 0.9 mmol C m⁻² d⁻¹) and northern transition zone (40°N–45°N, 17.1 ± 4.4 and 2.1 ± 0.5 mmol C m⁻² d⁻¹), with mean NCP ∼6–8× greater than mean CO2 invasion (error estimates reflect 1 σ confidence intervals). Contrastingly, the southern transition zone (32°N–40°N) and subtropics (22°N–32°N) had lower mean NCP (5.4 ± 1.8 and 8.1 ± 2.1 mmol C m⁻² d⁻¹, respectively) and mean CO₂ efflux (3.0 ± 0.5 and 0.1 ± 0.0 mmol C m⁻² d⁻¹, respectively). In the subarctic and transition zone, NCP was highly correlated with surface chl-a and CO₂ influx, indicating strong coupling between the biological pump and CO₂ uptake. Meridional trends in our NCP estimates in the transition zone and subtropics were similar to those for integrated summertime NCP along the cruise track determined using an upper ocean climatological carbon budget. |
| Genre | Article |
| Identifier | Lockwood, D., P. D. Quay, M. T. Kavanaugh, L. W. Juranek, and R. A. Feely (2012), High-resolution estimates of net community production and air-sea CO2 flux in the northeast Pacific, Global Biogeochemical Cycles, 26, GB4010, doi:10.1029/2012GB004380. |
