Svetlana GlebovaSvetlana GlebovaCyclicity in formation of the types

of synoptic situation above the Far East seas as a factor

of their ecosystems changes

Pacific Fisheries Research Centre (TINRO-centre), Vladivostok, Russia

The present report is devoted to search links The present report is devoted to search links of periodic changes of atmosphere regime of periodic changes of atmosphere regime with of dynamics of some biological with of dynamics of some biological factors.factors.

To indicateTo indicate interannualinterannual changes in changes in ecosystems of the Farecosystems of the Far--East Seas the cited East Seas the cited data on dynamics of the biomass ofdata on dynamics of the biomass of pollockpollockand plankton of theand plankton of the OkhotskOkhotsk and Bering and Bering Seas were used. The sources are listed Seas were used. The sources are listed here:here:

ShuntovShuntov, 2001, 2001Smirnov et all., 2001Smirnov et all., 2001StepanenkoStepanenko, 2001, 2001KlyshtorinKlyshtorin,2000,2000

Types of atmospheric processes formed over theTypes of atmospheric processes formed over theOkhotskOkhotsk and Bering Seas were used for and Bering Seas were used for describing a condition of an atmosphere.describing a condition of an atmosphere.

The types were defined for The types were defined for 1010--days averaged days averaged chartscharts of surface pressure analyzed for the period of surface pressure analyzed for the period of 1980of 1980--2000.2000.

The The positionposition and and intensity intensity criterion of the centers criterion of the centers of action of atmosphere, in particular the Aleutian of action of atmosphere, in particular the Aleutian depression, and also depression, and also direction of winddirection of wind over the over the each sea were used as the each sea were used as the main criteriamain criteria for for definition of the types. definition of the types.

In total, In total, sixsix characteristic characteristic synoptic situationssynoptic situations or or types had been allocated both for thetypes had been allocated both for the OkhotskOkhotskand Bering Seasand Bering Seas..

Generalized synoptic situations appropriate to certain types Generalized synoptic situations appropriate to certain types of atmospheric processes over theof atmospheric processes over the OkhotskOkhotsk and Bering and Bering

Seas (afterSeas (after GlebovaGlebova,1999;2001),1999;2001)

L

Н

Iо Ib IIо IIb

IIIоIIIb Vb

IVb VIо VIb

А B

IVо

Vо

C D

E F

НL Н

L

L

L

Н

Н L

L

Н

Catches Catches in in the Pacificthe PacificOcean (fromOcean (from KlyshtorinKlyshtorin,2000),2000)

Dynamics of theDynamics of the pollockpollock biomass in thebiomass in the OkhotskOkhotsk Sea Sea (from Smirnov,2001) and in the Bering Sea (from(from Smirnov,2001) and in the Bering Sea (from

StepanenkoStepanenko,2001) in the last two decades,2001) in the last two decadesPollock in the Okhotsk Sea

02000400060008000

10000

1984

1986

1988

1990

1992

1994

1996

1998

2000

Years

Biom

ass,t

hs.t

Pollock in the Bering Sea

040008000

1200016000

1980

1983

1986

1989

1992

1995

1998

Years

Biom

ass,t

hs.t

YearYear--toto--year variability of total repeatability of the types of year variability of total repeatability of the types of atmospheric processes, 10atmospheric processes, 10--days per yeardays per year

Bering SeaI type

4

8

12

1980

1982

1984

1986

1988

1990

1992

1994

1996

1998

2000Th

e qua

ntity o

f deca

des

II type

0

4

8

1980

1982

1984

1986

1988

1990

1992

1994

1996

1998

2000Th

e qua

ntity o

f deca

des

III type

0

4

8

1980

1982

1984

1986

1988

1990

1992

1994

1996

1998

2000Th

e qua

ntity o

f deca

des

IV type

4

8

12

16

1980

1982

1984

1986

1988

1990

1992

1994

1996

1998

2000Th

e qua

ntity o

f decad

es

V type

0

4

8

12

1980

1982

1984

1986

1988

1990

1992

1994

1996

1998

2000Th

e qua

ntity o

f deca

des

VI type

0

4

8

12

1980

1982

1984

1986

1988

1990

1992

1994

1996

1998

2000

Years

The q

uantit

y of

decad

es

Sea of OkhotskI type

6

11

16

1980

1982

1984

1986

1988

1990

1992

1994

1996

1998

2000Th

e qua

ntity o

f deca

des

II type

0

4

8

1980

1982

1984

1986

1988

1990

1992

1994

1996

1998

2000Th

e qua

ntity o

f deca

des

III type

0

4

8

1980

1982

1984

1986

1988

1990

1992

1994

1996

1998

2000Th

e qua

ntity o

f deca

des

IV type

4

8

12

1980

1982

1984

1986

1988

1990

1992

1994

1996

1998

2000Th

e qua

ntity o

f deca

des

V type

0

4

8

1980

1982

1984

1986

1988

1990

1992

1994

1996

1998

2000Th

e qua

ntity o

f deca

des

VI type

0

4

8

12

1980

1982

1984

1986

1988

1990

1992

1994

1996

1998

2000

Years

The q

uantit

y of

decad

es

InterannualInterannual dynamics of thedynamics of the pollockpollock biomass in thebiomass in the OkhotskOkhotskSea(Sea(АА) and in the eastern Bering Sea () and in the eastern Bering Sea (BB) on a background of ) on a background of

longlong--term change of repeatability of the types of term change of repeatability of the types of atmospheric processesatmospheric processes

A A BBVIo type

0

2000

4000

6000

8000

10000

12000

14000

1984

1986

1988

1990

1992

1994

1996

1998

2000

Years

Biom

ass,t

hs.t

012345678910

The q

uant

ity of

deca

des

VIb type

02000400060008000

10000120001400016000

1980

1982

1984

1986

1988

1990

1992

1994

1996

1998

2000

Years

Biom

ass,t

hs.t

0

2

4

6

8

10

12

The q

uant

ity of

deca

des

Vo type

0100020003000400050006000700080009000

10000

1984

1986

1988

1990

1992

1994

1996

1998

2000

Years

Biom

ass,

ths.t

0123456789

The q

uant

ity of

de

cade

sIVb type

02000400060008000

10000120001400016000

1980

1982

1984

1986

1988

1990

1992

1994

1996

1998

2000

Years

Biom

ass,t

hs.t

2

7

12

17

The q

uant

ity o

f de

cade

s

Synoptic situations lead to “warm” (Synoptic situations lead to “warm” (AA) and “cold” () and “cold” (BB) ) types of atmospheric processes over thetypes of atmospheric processes over the OkhotskOkhotsk and and

Bering SeasBering Seas

120 130 140 150 160 170 180 190 20030

40

50

60

70

990995

1000

1005

1010

1015

VIо VIb

99099510001005

1010

1015

L

НA.

The “cold” typesThe “cold” types

120 130 140 150 160 170 180 190 20030

40

50

60

701015

1015

1010

1010

1005

1005

1000

1000

995

995

1020

1020

1025

1025

1030

1030

1035

1035 IVbVо

Н LB.

VIo and VIb type s

02468

1012

1980

1982

1984

1986

1988

1990

1992

1994

1996

1998

2000

2002

Ye ars

Th

e q

uan

tity

of

dec

ades

VIb VIo

The “warm” typesThe “warm” types

IVb and Vo type s

02468

101214

1980

1982

1984

1986

1988

1990

1992

1994

1996

1998

2000

2002

Ye ars

Th

e q

uan

tity

of

dec

ades

IvbVo

InterannualInterannual dynamics of the abundance of spawningdynamics of the abundance of spawning pollockpollock in thein theOkhotskOkhotsk Sea with 5 years shift on a background of longSea with 5 years shift on a background of long--term term

variability of repeatability of thevariability of repeatability of the IVoIVo type of atmospheric type of atmospheric

processesprocesses

120 130 140 150 160 170 180 190 20030

40

50

60

70

990

9951000 10001005

1005

1010

1010

IVо L

IV type

0

2000

4000

6000

8000

10000

12000

1980

1982

1984

1986

1988

1990

1992

1994

1996

1998

2000

Years

Biom

ass,t

hs,t

2

7

12

The q

uant

ity o

f de

cade

s

InterannualInterannual dynamics of the abundance of spawningdynamics of the abundance of spawning pollockpollock in in Bering Sea with 5 years shift on a background of longBering Sea with 5 years shift on a background of long--term term

variability of repeatability of thevariability of repeatability of the IVbIVb type of atmospheric type of atmospheric processesprocesses

120 130 140 150 160 170 180 190 20030

40

50

60

70

995

995

1000

1000

1005

1005

1010

1010

1015

1015

1020

1020

1025

1025

H

LIVb

IVb type

0200040006000

8000

10000120001400016000

1980

1982

1984

1986

1988

1990

1992

1994

1996

1998

2000

Years

Bio

mas

s, th

s.t

0

5

10

15

The

quan

tity

of

deca

des

InterannualInterannual dynamics of number of a spawningdynamics of number of a spawning pollockpollock in the in the Bering andBering and OkhotskOkhotsk Seas with 5 years shift on a background of Seas with 5 years shift on a background of

longlong--term variability of repeatability of the “warm” types of term variability of repeatability of the “warm” types of

atmospheric processesatmospheric processes

VIo type

0

2000

4000

6000

8000

10000

12000

1980

1982

1984

1986

1988

1990

1992

1994

1996

1998

2000

Years

Bio

mas

s, th

s.t

012345678910

The

quan

tity

of

deca

des

VIb type

02000400060008000

10000120001400016000

1980

1982

1984

1986

1988

1990

1992

1994

1996

1998

2000

Years

Bio

mas

s, th

s.t

0

2

4

6

8

10

12

The

quan

tity

of

deca

des

InterannualInterannual variability ofvariability of macroplanktonmacroplankton biomass in the southwestbiomass in the southwest((АА) ) and Westand West--KamchatkaKamchatka ((BB) ) areas of theareas of the OkhotskOkhotsk Sea on a Sea on a

background of fluctuations of repeatability of thebackground of fluctuations of repeatability of the VIoVIo type of type of

atmospheric circulationatmospheric circulation

AA

BB

050

100150

200250300

1984

1986

1988

1990

1992

1994

1996

1998

Years

Biom

ass,

mg/

m3

0

2

4

6

8

10

The q

uant

ity o

f dec

ades

A macroplankton of southwest areaVI type

020406080

100120

1984

1986

1988

1990

1992

1994

1996

1998

Years

Biom

ass,

mg/

m3

0

2

4

6

8

10

The q

yant

ity o

f dec

ades

A macroplankton of West KamchatkaareaVI type

InterannualInterannual variability of a biomass of various groupings of variability of a biomass of various groupings of plankton (plankton (SagittaSagitta andand CopepodaCopepoda) in the Bering Sea (from) in the Bering Sea (from

ShuntovShuntov,2001) on a background of fluctuation of repeatability of V ,2001) on a background of fluctuation of repeatability of V

type of the atmospheric processestype of the atmospheric processes

120 130 140 150 160 170 180 190 20030

40

50

60

70

990

9951000 10001005

1005

1010

1010

LVb

0

200

400

600

800

1986

1987

1988

1989

1990

1991

1992

1993

1994

1995

1996

1997

1998

1999

Years

Bio

mas

s,m

g/m

3

024681012

The

quan

tity

of d

ecad

es

Sagitta Copepoda V type

LongLong--term fluctuations of a biomass of the various groupings term fluctuations of a biomass of the various groupings zooplankton (Euphausia and Amphipoda) in the Bering Sea zooplankton (Euphausia and Amphipoda) in the Bering Sea

(from(from ShuntovShuntov,2001) ,2001) on a background of an interannual course of on a background of an interannual course of

repeatability of III typerepeatability of III type

120 130 140 150 160 170 180 190 20030

40

50

60

70

10001000

1005

1005

1005 10051000 1000

1010

1010

1015

1015

IIIb

L

L

Н

0123456789

1986

1988

1990

1992

1994

1996

1998

Years

The q

untit

y of d

ecad

es

050100150200250300350400450

Biom

ass,m

g/m3

Amphipoda Euphausia III type

1. Rhythmic fluctuations with period 1. Rhythmic fluctuations with period 88--10 years10 years are revealed both in are revealed both in atmosphere and in the ecosystem of Far Eastern Seas, for exampleatmosphere and in the ecosystem of Far Eastern Seas, for example, in the , in the dynamics ofdynamics of pollockpollock in thein the OkhotskOkhotsk and Bering Seas.and Bering Seas.

4. In the Bering Sea, an 4. In the Bering Sea, an abundance of various zooplankton groupsabundance of various zooplankton groups ((SagittaSagitta,,CopepodaCopepoda,, EuphausiaEuphausia,, AmphipodaAmphipoda)) is linked with formation of certain is linked with formation of certain synoptic situations , each of which, causing the synoptic situations , each of which, causing the certain wind carrycertain wind carry, , promotes the favorable or unfavorable hydrological regime in thepromotes the favorable or unfavorable hydrological regime in the areas areas of their habitation.of their habitation.

2. 2. Abundant generationsAbundant generations of theof the pollockpollock in thein the OkhotskOkhotsk and Bering Seas and Bering Seas appear on a background of appear on a background of increaseincrease of repeatability of the "of repeatability of the "moderate moderate coldcold"" IVoIVo and "and "coldcold"" IVbIVb synoptic types accordingly. Both these types synoptic types accordingly. Both these types are characterized by are characterized by stable west windsstable west winds over theover the pollockpollock spawning spawning grounds.grounds.

3. On the contrary, 3. On the contrary, growth ofgrowth of macroplanktonmacroplankton biomassbiomass in the sea ofin the sea of OkhotskOkhotskoccurs on a background of occurs on a background of intensive formationintensive formation of the warm typeof the warm type VIoVIo..

ConclusionsConclusions

Thanks for attentionThanks for attention

Thanks for attentionThanks for attention