Institute of Oceanology PAS In the Arctic Jan Piechura Arctic GOOS Planning Meeting NERSC, Bergen...
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Institute of Oceanology PAS In the Arctic Jan Piechura Arctic GOOS Planning Meeting NERSC, Bergen 12-13 Sep. 2006
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Transcript of Institute of Oceanology PAS In the Arctic Jan Piechura Arctic GOOS Planning Meeting NERSC, Bergen...
Institute of Oceanology PASIn the Arctic
Jan Piechura
Arctic GOOS Planning MeetingNERSC, Bergen 12-13 Sep. 2006
IOPAS STATIONS GRID
ArcticGOOS, Bergen, 2006ArcticGOOS, Bergen, 2006
Measurements
At High Seas and Shelf:•Standard meteo, aerosols•CTD, ADCP (VMADCP and LADCP)•Solar radiation, light day attenuation•Organic carbon, organic matter•Primary production•Plankton: phyto, zoo•Birds count
At Svalbard Fiords (additionaly):•High resolution CTD and ADCP•Suspended matter sedimentation•Plankton: phyto, zoo, bentos•Gas bubbles in the water
IO PAS
STATIONS PLANNED IN DAMOCLES
ArcticGOOS, Bergen, 2006ArcticGOOS, Bergen, 2006
June- July 2005ADCP measured currents at 100 m.Geostrophic currentsGeostrophic flow Kinetic Energy (color scale)
0
5
1 0
1 5
2 0
2 5
3 0
3 5
4 0
4 5
5 0
5 5
6 0
6 5
7 0
7 5
•Two KE maxima (core, western branch);Convergence of two streams at ~78º N;Recirculation at ~78º and ~79ºLarge anticyclonic eddy at ~73º 30’ Meandering of the western branch
SOME RESULTS
ArcticGOOS, Bergen, 2006ArcticGOOS, Bergen, 2006
75°
76°
77°
78°
79°
80°
Scale (cm /s)
20EB
Z
N
K
•TWO AW TRANSPORT MAXIMA (CORE, WESTERN BRANCH);•SOUTHWARD FLOW REGION BETWEEN BRANCHES;•CONVERGENCE OF TWO STREAMS AT ~78º N;•DIVERGENCE OF STREAMS AT ~79º N;•THE EASTERN BRANCH (CORE OF WSC) INFLOWS INTO THE ARCTIC OCEAN, THE WESTERN ONE MOSTLY RECIRCULATES
EXAMPLE: PATHWAYS OF ATLANTIC WATER - STRUCTURE
B A R O C L IN IC
L O V E R E D A D C P
VERTICALLY INTEGRATED TRANSPORTS OF ATLANTIC WATER ACROSS SECTIONS
Summer 2005
ArcticGOOS, Bergen, 2006ArcticGOOS, Bergen, 2006
EXAMPLE : PROPERTIES OF ATLANTIC WATER - VARIABILITY
AW LAYER HEATR CONTENT AND BAROCLINIC CURRENTS ANOMALIES FROM MEAN 2000-2005
•2003 NEGATIVE AW HEAT CONTENT ANOMALY
•2004 – HIGHER HEAT CONTENT
•2005 THE HIGHEST HEAT CONTENT, LARGE HEAT ANOMALIES CARRIED BY THE MESOSCALE EDDIES IN THE WESTERN BRANCH
•POSITIVE HEAT ANOMALIES CARRIED BY THE ANICYCLONIC EDDIES
ArcticGOOS, Bergen, 2006ArcticGOOS, Bergen, 2006
75°
76°
77°
78°
79°
80°
004° 008° 012° 016°
2
2 .2
2 .4
2 .6
2 .8
3
3 .2
3 .4
3 .6
3 .8
4
4 .2
4 .4
4 .6
4 .8
5
5 .2
5 .4
5 .6
5 .8
75°
76°
77°
78°
79°
80°
004° 008° 012° 016°
2
2 .2
2 .4
2 .6
2 .8
3
3 .2
3 .4
3 .6
3 .8
4
4 .2
4 .4
4 .6
4 .8
5
5 .2
5 .4
5 .6
5 .8
75°
76°
77°
78°
79°
80°
004° 008° 012° 016°
2
2 .2
2 .4
2 .6
2 .8
3
3 .2
3 .4
3 .6
3 .8
4
4 .2
4 .4
4 .6
4 .8
5
5 .2
5 .4
5 .6
5 .8
75°
76°
77°
78°
79°
80°
004° 008° 012° 016°
2
2 .2
2 .4
2 .6
2 .8
3
3 .2
3 .4
3 .6
3 .8
4
4 .2
4 .4
4 .6
4 .8
5
5 .2
5 .4
5 .6
5 .8
75°
76°
77°
78°
79°
80°
004° 008° 012° 016°
2
2 .2
2 .4
2 .6
2 .8
3
3 .2
3 .4
3 .6
3 .8
4
4 .2
4 .4
4 .6
4 .8
5
5 .2
5 .4
5 .6
5 .8
75°
76°
77°
78°
79°
80°
004° 008° 012° 016°
2
2 .2
2 .4
2 .6
2 .8
3
3 .2
3 .4
3 .6
3 .8
4
4 .2
4 .4
4 .6
4 .8
5
5 .2
5 .4
5 .6
5 .8
2001 2002 2003
2004 2005 2006
EXAMPLE : TEMPERATURE AT 100m DEPTH
1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006Ye a r
0
10
20
30
40
50
60
AW
Hea
t tra
nspo
rt (
TW
)1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006
Ye a r
2
2.4
2.8
3.2
3.6
4
Tem
pera
ture
1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006Ye a r
34.96
34.98
35
35.02
35.04
35.06
35.08
Sal
inity
Variability of mean temperature, salinity and heat transport of Atlantic Water at Latitude 76o30'N
ArcticGOOS, Bergen, 2006ArcticGOOS, Bergen, 2006
