Southern California Coast Observed Temperature Anomalies Observed Salinity Anomalies Geostrophic...
-
Upload
kelly-marshall -
Category
Documents
-
view
220 -
download
0
Transcript of Southern California Coast Observed Temperature Anomalies Observed Salinity Anomalies Geostrophic...
Southern California Coast
Observed Temperature Anomalies
Observed Salinity Anomalies
Geostrophic Along-shore Currents
Warming Trend
Low Frequency Salinity variations
Ocean Modeling
Emanuele Di Lorenzo
North-East Pacific - Mean Surface Temperature
CaliforniaCurrent
USA
Model Domain
CalCOFI In-SituObservations1950 – 2000
(high density sampling domain)
CSection A
Figure (above) : Vertical EOFs 1 along SECTION A for the CalCOFI temperature and (c,d) salinity anomalies. The seasonal cycle is removed. (e,f) EOF 1 for geostrophic alongshore currents relative to 500 m. In (b) and (d) the black line represent the domain average.
CLIMATE CHANGE and EDDIES in the GULF of ALASKAGlobal Warming may lead to increase precipitation over Alaska and Canada. We investigate the effects of enhanced coastal buoyancy fluxes on the generation/dynamics of large scale coastal eddy dynamics and on large scale mixing of nutrients in the Gulf of Alaska.
1998/02/13
1998/03/05
1998/03/25
m
Haida Eddies
Sitka Eddy
Sea Surface Height [m]
with V. Combes (GaTech). NSF support.
WARMING of the CALIFORNIA CURRENTAn eddy resolving models of the California Current is combined with 52 year long in situ observations of Temperature and Salinity from the California Cooperative Fisheries Investigation, to elucidate the dynamics of upper ocean warming and their effect on ocean biology.
60° E 110° E 160° E 150° W
100° W
0°
30° S
30° N India ChinaINDO-PACENSO February 1998 SSH anomaly
Australia
0 2 4-2-4cm
INDO-PACIFIC THEMROCLINE DYNAMICS, Coupled Ocean-Atmosphere Modeling ApproachA coupled ocean-atmosphere model is used to investigate the dynamics of the indo-pacific thermocline on decadal and ENSO timescale. In particular we investigate the relationship between upwelling and the Indian Ocean dipole mode.
UPWELLING in the ARABIAN SEA and INDIAN OCEAN WARMING TREND
Indian Ocean
North Pacific Ocean
with N. Schneider (UH), A. Miller (Scripps), J. McWilliams (UCLA). NSF, NASA support.
The dynamics leading to the spatial pattern of the Indian Ocean warming trend are investigated. In particular we focus on the dynamical controls of the Arabian upwelling and biological productivity, to isolate the competing effects associated with changes in monsoonal upwelling winds, upper ocean stratification and thermocline depth.
Canada
Sea Surface Temperature – EOF 1
Arabian Sea
Warming Trend over the Indian OceanUpwelling Winds vs. detrended SST
Biological Modeling
with S. Vieira and P. Webster (GaTech), A. Bracco (WHOI). NSF support.
M1
Spring
Summer
Fall
Winter
3
2
1
03
2
1
03
2
1
03
2
1
0
-100
-200
-100
-200
-100
-200
-100
-200
MODEL OBSERVATIONS
-124 -122 -120 -124 -122 -120Longitude W Longitude W
Dep
th m
Dep
th m
Dep
th m
Dep
th m
SPATIAL/TEMPORAL VARIABILITY OF CHLOROPHYLL-AEcosystem models forced by coastal ocean models are used to the variability of CHL-A and its response to climate change.
Spring Summer
Fall Winter3
3
0
1.5
1.5
-125 -120 -115-125 -120 -115
38
36
34
32
38
36
34
32
Lati
tude N
Lati
tude N
CalCOFI
Model
M1
MODELING BIOLOGICAL OBSERVATIONSThe Ecosystem model forced by coastal are compared to the CalCOFI observations and used to diagnose the relationship between physical costal dynamics and biological productivity.
part of NSF-LTER site project in the California Current