Research Interests:
I have loved being on and around the ocean as long as I can remember.
I received a BA in Geology and Chemistry from the University of Southern
Maine (1981) and a Ph.D. in Natural Resources/ Earth System Science
(Oceanography) from UNH (2003). I’m presently the PI of the Coastal
Carbon – Terrestrial Influence (CCTI) project. My interests focus
on the biogeochemistry and ecology of coastal regions that are influenced
by riverine discharge. I’m presently working on two strands of
research.
The first seeks to characterize distributions of carbon dioxide, air-sea
carbon exchange and productivity in riverine-influenced coastal regions.
Rivers deliver inorganic and organic carbon, as well as a variety of
macro and micronutrients known to stimulate coastal productivity. This
suite of riverine constituents affects the way in which carbon is transformed
and ultimately moved out of the coastal system by advective, air-sea
or benthic exchange. Although the annual flux of land-ocean carbon is
relatively small in the global carbon budget, it is of the same magnitude
as the entire air-sea carbon exchange. We presently do not know what
fraction of this carbon is respired and ventilated to the atmosphere,
or is removed via other processes.
Our group has recently discovered that the optical and physical data
we measure on the Coastal Observatory cruises contains valuable information
related to biogeochemical cycling and rates of biologically mediated
carbon uptake or release. Many of our ship measurements have analogues
that can be estimated using satellite data. The goal of this work is
to develop innovative satellite classification and algorithm application
techniques to quantify in-water CO2 concentrations and rates of community
production in coastal and estuarine waters.
My second strand of research involves the use of data from a variety
of space-borne sensors to identify and classify estuarine and river
plumes of the world. During my thesis work with Dr. Janet Campbell,
we developed satellite methods that enable the detection of coastal
regions that are dominated by either riverine or wind-driven resuspension
processes. For this work we used observed and modeled river data in
conjunction with satellite ocean-color and scatterometer wind data.
The results of this work allow researchers to focus on different coastal
provinces, which often have similar, complex ocean color signatures.
The beauty of ocean satellite data is that it provides researchers with
a global view. As such, we are presently working to scale our methods
to map regions of coastal riverine and wind influence to the global
scale.
I am also interested in developing more advanced plume detection methodologies
in order to efficiently study the biogeochemical dynamics of plumes
at broad spatial scales. CCTI projects that show promise involve the
coupling of physical flow fields with ocean color data to study the
trajectory and persistence of surface plumes, and the use of MODIS fluorescence
data to help segregate river-derived constituents from biomass produced
in-situ. |
Selected Publications:
Salisbury, J.E., D. Vandemark, C. Hunt, J. Campbell, W. McGillis, H.
Xue. Seasonal dynamics of dissolved inorganic carbon in the western
Gulf of Maine, 2004-2005: significance of riverine influence (in
preparation)
Salisbury, J.S, D. Vandemark, C.Hunt, J.W. Campbell, W. McGillis and
W. McDowell (2005) Seasonal observations of surface waters in two Gulf
of Maine estuary-plume systems: relationships between watershed attributes,
optical measurements and surface pCO2 (Submitted to Estuarine, Coast
and Shelf Science)
Syvitski ,J.P., Harvey, N, … Salisbury, J.E. et al. (2004) Dynamics
of the coastal zone. In Coastal Change and The Anthropocene. Springer-Verlag,
New York
Salisbury, J.S, J.W. Campbell, E.L Linder, L.D. Meeker, F.E. Muller-Karger
and C.J. Vorosmarty (2004) On the seasonal correlation of surface particle
fields with wind stress and Mississippi discharge in the northern Gulf
of Mexico. Deep Sea Research Part II: Volume 51, Issues 10-11 , May-June
2004, 1187-1203
Rivera-Monroy, V.H., R.R. Twilley, J. E. Salisbury et al. (2004). A
Biogeochemical Conceptual Framework to Develop Long Term Ecological
Research and Sustain Coastal Management in the Wider Caribbean Region
BioScience 54 (9) 843-856
Salisbury, J.S, J.W. Campbell, L.D. Meeker and C.J. Vorosmarty (2001)
Ocean Color and River Data Reveal Fluvial Influence and Coastal Waters.
EOS Transactions, Vol 82, 221-227
Vorosmarty, C.J., P. Green, J.E. Salisbury and R. Lammers. (2000) Global
Water Resources: Vulnerability from Climate Change and Population Growth.
Science v.289 pp. 284-288 |
