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Powell, M.D.; Cocke, S. | ||||
| Title | Hurricane wind fields needed to assess risk to offshore wind farms | Type | $loc['typeJournal Article'] | ||
| Year | 2012 | Publication | Proceedings of the National Academy of Sciences of the United States of America | Abbreviated Journal | Proc Natl Acad Sci U S A |
| Volume | 109 | Issue | 33 | Pages | E2192; author reply E2193-4 |
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 0027-8424 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Funding | PMID:22829670; PMCID:PMC3421164 | Approved | $loc['no'] | ||
| Call Number | COAPS @ mfield @ | Serial | 241 | ||
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| Author |
Stukel, M.R.; Aluwihare, L.I.; Barbeau, K.A.; Chekalyuk, A.M.; Goericke, R.; Miller, A.J.; Ohman, M.D.; Ruacho, A.; Song, H.; Stephens, B.M.; Landry, M.R. | ||||
| Title | Mesoscale ocean fronts enhance carbon export due to gravitational sinking and subduction | Type | $loc['typeJournal Article'] | ||
| Year | 2017 | Publication | Proceedings of the National Academy of Sciences of the United States of America | Abbreviated Journal | Proc Natl Acad Sci U S A |
| Volume | 114 | Issue | 6 | Pages | 1252-1257 |
| Keywords | biological carbon pump; carbon cycle; particle flux; particulate organic carbon; plankton | ||||
| Abstract | Enhanced vertical carbon transport (gravitational sinking and subduction) at mesoscale ocean fronts may explain the demonstrated imbalance of new production and sinking particle export in coastal upwelling ecosystems. Based on flux assessments from 238U:234Th disequilibrium and sediment traps, we found 2 to 3 times higher rates of gravitational particle export near a deep-water front (305 mg Cm-2d-1) compared with adjacent water or to mean (nonfrontal) regional conditions. Elevated particle flux at the front was mechanistically linked to Fe-stressed diatoms and high mesozooplankton fecal pellet production. Using a data assimilative regional ocean model fit to measured conditions, we estimate that an additional approximately 225 mg Cm-2d-1 was exported as subduction of particle-rich water at the front, highlighting a transport mechanism that is not captured by sediment traps and is poorly quantified by most models and in situ measurements. Mesoscale fronts may be responsible for over a quarter of total organic carbon sequestration in the California Current and other coastal upwelling ecosystems. | ||||
| Address | Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093 | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 0027-8424 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Funding | PMID:28115723; PMCID:PMC5307443 | Approved | $loc['no'] | ||
| Call Number | COAPS @ mfield @ | Serial | 67 | ||
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| Author |
Zeng, H.; Chambers, J.Q.; Negron-Juarez, R.I.; Hurtt, G.C.; Baker, D.B.; Powell, M.D. | ||||
| Title | Impacts of tropical cyclones on U.S. forest tree mortality and carbon flux from 1851 to 2000 | Type | $loc['typeJournal Article'] | ||
| Year | 2009 | Publication | Proceedings of the National Academy of Sciences of the United States of America | Abbreviated Journal | Proc Natl Acad Sci U S A |
| Volume | 106 | Issue | 19 | Pages | 7888-7892 |
| Keywords | Biodiversity; Biomass; Carbon; *Cyclonic Storms; Ecosystem; Greenhouse Effect; Models, Statistical; Southeastern United States; *Trees; United States | ||||
| Abstract | Tropical cyclones cause extensive tree mortality and damage to forested ecosystems. A number of patterns in tropical cyclone frequency and intensity have been identified. There exist, however, few studies on the dynamic impacts of historical tropical cyclones at a continental scale. Here, we synthesized field measurements, satellite image analyses, and empirical models to evaluate forest and carbon cycle impacts for historical tropical cyclones from 1851 to 2000 over the continental U.S. Results demonstrated an average of 97 million trees affected each year over the entire United States, with a 53-Tg annual biomass loss, and an average carbon release of 25 Tg y(-1). Over the period 1980-1990, released CO(2) potentially offset the carbon sink in forest trees by 9-18% over the entire United States. U.S. forests also experienced twice the impact before 1900 than after 1900 because of more active tropical cyclones and a larger extent of forested areas. Forest impacts were primarily located in Gulf Coast areas, particularly southern Texas and Louisiana and south Florida, while significant impacts also occurred in eastern North Carolina. Results serve as an important baseline for evaluating how potential future changes in hurricane frequency and intensity will impact forest tree mortality and carbon balance. | ||||
| Address | Department of Ecology and Evolutionary Biology, Tulane University, 400 Boggs Center, New Orleans, LA 70118, USA. hzeng@tulane.edu | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 0027-8424 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Funding | PMID:19416842; PMCID:PMC2683102 | Approved | $loc['no'] | ||
| Call Number | COAPS @ mfield @ | Serial | 658 | ||
| Permanent link to this record | |||||
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