Hurricanes enhance labile carbon export to the deep ocean
Date
2019-08-16Author
Pedrosa-Pamies, Rut
Concept link
Conte, Maureen H.
Concept link
Weber, John C.
Concept link
Johnson, Rodney
Concept link
Metadata
Show full item recordCitable URI
https://hdl.handle.net/1912/24907As published
https://doi.org/10.1029/2019GL083719DOI
10.1029/2019GL083719Keyword
hurricanes; carbon cycle; North Atlantic Ocean; deep ocean; particle fluxes; lipid biomarkersAbstract
Tropical cyclones (hurricanes) generate intense surface ocean cooling and vertical mixing resulting in nutrient upwelling into the photic zone and episodic phytoplankton blooms. However, their influence on the deep ocean remains unknown. Here we present evidence that hurricanes also impact the ocean's biological pump by enhancing export of labile organic material to the deep ocean. In October 2016, Category 3 Hurricane Nicole passed over the Bermuda Time Series site in the oligotrophic NW Atlantic Ocean. Following Nicole's passage, particulate fluxes of lipids diagnostic of fresh phytodetritus, zooplankton, and microbial biomass increased by 30–300% at 1,500 m depth and 30–800% at 3,200 m depth. Mesopelagic suspended particles following Nicole were also enriched in phytodetrital material and in zooplankton and bacteria lipids, indicating particle disaggregation and a deepwater ecosystem response. Predicted climate‐induced increases in hurricane frequency and/or intensity may significantly alter ocean biogeochemical cycles by increasing the strength of the biological pump.
Description
Author Posting. © American Geophysical Union, 2019. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 46 (2019): 10484–10494, doi:10.1029/2019GL083719.
Collections
Suggested Citation
Pedrosa-Pamies, R., Conte, M. H., Weber, J. C., & Johnson, R. (2019). Hurricanes enhance labile carbon export to the deep ocean. Geophysical Research Letters, 46, 10484–10494.Related items
Showing items related by title, author, creator and subject.
-
The CBLAST-Hurricane program and the next-generation fully coupled atmosphere–wave–ocean models for hurricane research and prediction
Chen, Shuyi S.; Zhao, Wei; Donelan, Mark A.; Price, James F.; Walsh, Edward J. (American Meteorological Society, 2007-03)The record-setting 2005 hurricane season has highlighted the urgent need for a better understanding of the factors that contribute to hurricane intensity, and for the development of corresponding advanced hurricane ... -
Impacts of oceanic mixed layer on hurricanes: a simulation experiment with Hurricane Sandy
Li, Siqi; Chen, Changsheng; Wu, Zhongxiang; Beardsley, Robert C.; Li, Ming (American Geophysical Union, 2020-10-07)Influences of the ocean mixed layer (OML) dynamics on intensity, pathway, and landfall of October 2012 Hurricane Sandy were examined through an experiment using the Weather Research and Forecasting (WRF) model. The WRF ... -
Carbonate chemistry effects from Hurricane Harvey in San Antonio Bay and Mission Aransas Estuary from 2017-02-22 to 2018-11-15
Hu, Xinping (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2019-12-19)A calibrated YSI 6920 multisonde was used to obtain in-situ temperature at both the surface (~0.5 m) and the bottom (within 0.5 m from the sediment-water interface) of the water column, and a Van Dorn water sampler was ...