Physical processes controlling chlorophyll-a variability on the Mid-Atlantic Bight along northeast United States
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

For very narrow results

When looking for a specific result

Best used for discovery & interchangable words

Recommended to be used in conjunction with other fields

Dates

to

Document Data
Library
People
Clear All
Clear All

For additional assistance using the Custom Query please check out our Help Page

i

Physical processes controlling chlorophyll-a variability on the Mid-Atlantic Bight along northeast United States

Filetype[PDF-1.76 MB]



Details:

  • Journal Title:
    Journal of Marine Systems
  • Personal Author:
  • NOAA Program & Office:
  • Description:
    We employed empirical orthogonal function (EOF) analysis to examine the spatial and temporal pattern changes in the surface chlorophyll a distribution (chl-a) on the Mid-Atlantic Bight (MAB) using Moderate Resolution Imaging Spectroradiometer Aqua (MODISA) chl-a data (2003–2016) and Sea-viewing Wide Field-of-view Sensor (SeaWiFS) chl-a data (1998–2007), and interpreted the underlying environmental determinants. A coupled physical-biogeochemical model was used to explore the primary physical factors determining the chl-a variability on the shelf. Model sensitivity studies identified wind mixing, net heat flux, and river discharge as the dominant factors influencing the MAB water column stability and consequent phytoplankton growth. The primary feature of chl-a indicated spring peaks on the outer shelf during the MODISA period, while fall-winter high during the SeaWiFS period in the same area. The observed increase in wind mixing and heat loss during winter and pre-spring were responsible for the delay in the phytoplankton bloom to spring on the outer shelf. The secondary chl-a peak occurred in the fall on the New Jersey shelf during MODISA period, and in the fall-winter in the Delaware Bay estuary for chl-a during SeaWiFS period. The Hudson River discharge was associated with the chl-a anomalies on the New Jersey shelf in the fall and winter during the MODISA period. Both the MODISA and SeaWiFS chl-a concentrations peaked during the fall-winter on the southern part of the MAB (in the EOF mode 3 region), but the MODISA chl-a peak area was north of the SeaWiFS chl-a peak area. The variation of chl-a concentration in the southern region of the MAB was most likely associated with the Chesapeake Bay rivers' discharge. In our study, the regional associations between chl-a and multiple climate-sensitive environmental parameters suggest that basin-scale forcing plays an important role in the underlying chl-a variabilities on the MAB.
  • Keywords:
  • Source:
    Journal of Marine Systems, 212, 103433
  • DOI:
  • ISSN:
    0924-7963
  • Format:
  • Publisher:
  • Document Type:
  • Funding:
  • Rights Information:
    Accepted Manuscript
  • Compliance:
    Library
  • Main Document Checksum:
  • Download URL:
  • File Type:

Supporting Files

  • No Additional Files
More +

You May Also Like

Checkout today's featured content at repository.library.noaa.gov

Version 3.26.1