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 |
