eric p. bjorkstedt, marisol garcia-reyes, bill sydeman, john … · 2021. 5. 21. · eric p....
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EricP.Bjorkstedt,MarisolGarcia-Reyes,BillSydeman,JohnLargier,
MarcelLosekoot,BrianTissot
Motivation� Oceanographicimage
NCSRMPASymposium5May2017
FauxMPA
Regional(network)scaledynamics
Local(consistent)oceanographicstructure
OceanographicContext
NCSRMPASymposium5May2017
Woodson etal(2012)
Bjorkstedt&Peterson(2016)
Basin-scaleclimatedriversofCCS
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13
MEI
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13
PDO
2005 2010 2015
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13
NPGO
Climatetrends&events� 2009-10ElNiño� 2011LaNiña� 2014WarmBlob� 2015-16ElNiño
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13
MEI
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13
PDO
2005 2010 2015
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13
NPGO
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CopepodCommunity� Arrivalofwarm-waterspeciespost2010ElNiño� Displacementofcold-waterspeciesbyBloband2015ElNiño
NCSRMPASymposium5May2017
ONCAEAOITHONA.SPINIROSTRIS
OITHONA.SIMILISMICROSETELLA
MESOCALANUS.TENUICORNISLUCICUTIA
PARACALANUSEUCALANUS
CLAUSOCALANUS.PERGENSCLAUSOCALANUS.PARAPERGENSCLAUSOCALANUS.ARCUICORNIS
CLAUSOCALANUSCALOCALANUS.TENUIS
CALOCALANUS.STYLIREMISCALOCALANUS.PAVOCALANUS.PACIFICUS
ACARTIA.DANAECTENOCALANUS.VANUSCORYCAEUS.ANGLICUS
ACARTIA.TONSASCOLECITHRICELLA.MINORNEOCALANUS.PLUMCHRUSMICROCALANUS.PUSILLUS
METRIDIATORTANUS.DISCAUDATUS
PSEUDOCALANUSCALANUS.MARSHALLAEACARTIA.LONGIREMISACARTIA.HUDSONICA
10
1000
1e+05
2008 2009 2010 2011 2012 2013 2014 2015 2016
CNSA
WO
WN
UB
Unusualkrillvisitors(copepods,too)
Photocredit:R.Robertson
Fromoffshore:Euphausiarecurva(2014-15,2015-16)
Fromthesouth:Nyctiphanessimplex(2015-16ElNiño)
NCSRMPASymposium5May2017
McCabeetal.2016GRL
HarmfulAlgalBloom
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BottomLine:
BaselineStudyPeriodspannedsomehighlyunusualoceanconditions.
Asyet,itisunclearwhethertheseyearswere(big)blipsormarkapersistentshift.
NCSRMPASymposium5May2017
Wanna knowmore?
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MOCI
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13
MEI
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13
PDO
2005 2010 2015
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13
NPGO
� Holistic,syntheticregionalindex� Blendsbasinscaleclimateindiceswithlocal(regional)measuresofoceanconditions.
� Seasonalanomalies(e.g.,comparingamong‘springs’)
MOCI
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BaselineStudyPeriod:anomalouspolewardflows
OceanCurrentsHFRadar,SatelliteAltimetry,TideGauges
NCSRMPASymposium5May2017
NCSRMPASymposium5May2017
SST,SST,SSTFrontalIndex∆
Consistentalongshorestructure
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Anomalousconditions
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WarmBlob ElNiño
Smith River at Crescent City (1960-2016)
month
mea
n flo
w (c
fs)
A S O N D J F M A M J J
1000
1000
0
201420152016
2000-2013
Smith River at Crescent City (1960-2016)
month
cum
ulat
ive
mea
n flo
w (c
fs)
A S O N D J F M A M J J
1000
1000
010
0000
20142015
2000-2013
2016
RiverDischarge
NCSRMPASymposium5May2017
ConsistentOceanStructure
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39.0
40.0
41.0
42.0
lat
mSST
mFI
mCHL
mSLa
mXSh
mASh
wshdPrx k= 3 5 7 9
BottomLine:BaselineStudyPeriodspannedsomehighlyunusualoceanconditions.
WarmanomaliesPolewardflowChangesinplanktonecosystem/HAB
Asyet,itisunclearwhethertheseyearswere(big)blipsormarkapersistentshift.
NCSRMPASymposium5May2017
Questions?� Oceanographicimage
NCSRMPASymposium5May2017
FauxMPA