化学海洋学特論II

書式設定, 書式設定,第 2 ,第 3 ,第 4 ,第 5 ,*,My 10min talk: Two topics,(1),The Japanese useful data set for the time series data,(2),Some of our groups results:,Decadal changes of oceanic components,in the western North Pacific.,(a) Its linear trend and oscillation,(b) The change of biological activity in the surface,Japanese time series data in the North Pacific,.,0,2,0,4,0,6,0,1,0,0,1,2,0,1,4,0,1,6,0,1,8,0,-,1,6,0,-,1,4,0,0,2,0,4,0,6,0,),4,8,N,0,N,1,7,5,E,3,4,.,5,N,1,3,7,E,O,y,3,N,J,p,JMA data,(1971-),KANSO data (web site),NOPACCS,WESTCOSMIC,(1990-2001),Longitude(E),Latitude(N),JMA data,(1980s-,155,E,165,E,P1 rev.(JODC web site,(1999),JODC data (web site),(1960s-,JMA data,(1971-),KNOT data (web site),(1997-),For JMA data: Please contact the members of JMA or MRJ (Ishii, Inoue),(,I)JODC,(Japan Oceanographic Data Center),J-DOSS(JODC data On-line Service System),(,II)IJCD,(Inventory of Japanese Chemical oceanographic Data),Although most of them are closed,it is necessary to contact each PI.,Japanese useful data site,It is possible to get the JMA data along 137E,The linear trend and oscillation,Many results are only based on the two snap shot data.,Thus, using the long term data set, we try to clarify the following:,How does the oceanic physical condition change?,North Pacific,Intermediate Water,(North Pacific,subpolar area),Japan Sea Deep Water,(Eastern Japan Sea Basin area),Japan Sea Deep Water,(Yamato Basin area),Time series of,DO, PO,4,& T,from 1960 to 2001,These linear trends and oscillations have completely strong correlation against NPI.,Comparison of DO, PO,4,& T between,Japan Sea Deep Water and,North Pacific Intermediate Water,Thus the atmospheric oscillations and/or the artificial warming effects simultaneously already caused the extensive rapid changes of oceanic condition over the North Pacific.,Watanabe, Y. W., et al.,Geophys,.,Res,.,Lett,.,2003,The change of these parameters,in the two oceans occurred by 27.4,s,q,（,Japan Sea:3000m, North Pacific:1000m),DO, PO,4,& T in the Japan Sea,Deep Water: (below 2000m,27.4,s,q,),PO,4,DO,Temp,Japan Sea Deep Water,DO, PO,4,& T in the North Pacific,Intermediate Water: 26.8-,27.4,s,q,PO,4,DO,Temp,North Pacific Intermediate Water,High,High,Low,Minobe,2000,Anomaly of sea surface level pressure,in the North Pacific(NPI),Anomaly of sea,surface level pressure,The change of these parameters,synchronized to each other despite these,water formation systems to be independent.,Possibility of,the change of marine biological activity,Even if the biological activities do not increase remarkably,it is possible that they already changed due to the change of physical conditions.,Using the long term data set with biological activity,we here try to clarify the following:,Does the biological condition change over time,on the long term scale?,.,0,2,0,4,0,6,0,1,0,0,1,2,0,1,4,0,1,6,0,1,8,0,-,1,6,0,-,1,4,0,0,2,0,4,0,6,0,),4,8,N,0,N,1,7,5,E,3,4,.,5,N,1,3,7,E,O,y,3,N,J,p,1971-2000,Summer &Winter,1990-2001,Summer,Longitude(E),Latitude(N),Time series of,C,hlorophyll-a,S,ubsurface,M,aximum,D,epth (CSMD) (m),Ishida et al., in preparation.,This suggests that the biological activity may change at least in the past 30 yrs over the North Pacific.,Average: 0.5 m/yr,137,E,175,E,Linear trend:0.80.3 m/,yr,Linear trend:0.20.1 m/,yr,0,20,40,60,80,100,120,1970,1980,1990,2000,Summer(Jul.-Aug.),40-30,N,30-20,N,20-10,N,10-0,N,CSMD, Chl-a subsurface max depth (m),year,0,20,40,60,80,100,120,1970,1980,1990,2000,40-30,N,30-20,N,20-10,N,10-0,N,50-40,N,Summer(Aug.-Sep.),year,CSMD(m),Latitude(N),Chl-a,Depth (m),CSMD,(,C,hl-a,S,ubsurface,M,aximum,D,epth,),Density, PO,4, Chl and NCP in the mixed layer,along 137E,(3 yrs running mean),Watanabe, Y. W., et al., submitted to,Geophys,.,Res,.,Letts,.,Thus the change of atmospheric condition may cause the change of physical condition, and consequently does the change of biological activity.,.,0,1,7,0,8,0,9,0,0,0,y,e,a,r,Minobe,2000,PDO,(,o,C,),(Anomaly of SST,),Index of interaction,between air and,sea surface,.,NCP,(g-C/m,2,/yr),(Net community,Production),Periodicity of 20 yrs,Decreasing trend,Decrease of biological activity far from the increase,0,20,40,Ave:-0.270.11 g-C/m2/yr,Decreasing trend in the two seasons,Winter(Jan-Feb),21,22,23,24,25,40-30,N(,Kuroshio,),30-15,N(Subtropical),15-00,N(Tropical),Summer(Jul-Aug),Density,Ave:-0.0070.002/yr,Ave:-0.0120.002/yr,ave,PO,4,(,m,mol/l),Periodicity of 20 yrs,Decreasing trend,0,.,0,0,.,1,0,.,2,0,.,3,Ave:-0.0030.001,m,mol/l/yr,Ave:-0.0020.001,m,mol/l/yr,20,40,60,0,70,80,90,00,year,70,80,90,00,year,Periodicity of 20 yrs,Decresasing trend,Chl inventory,(mg/m,2,),Ave:-0.380.06 mg/m2/yr,Ave:-0.170.10 mg/m2/yr,Proportional of Chl within 3,m,m,inventory to total (%),Time series of proportional of Chl,within 3,m,m to total between 1991 -2001,Proportional of Chl within 3,m,m increases, despite the total Chl and NCP decreasing.,Ishida et al., in preparation.,CSMD,vs,Proportional of Chl within 3,m,m,between 1991 - 2001,Proportional of 75-200m chl-a inventory,to total(%),Index of CSMD,0,20,40,60,80,100,30,40,50,60,70,80,90,Proportional of 3,m,Chl,a (%),r,2,=0.76 (,p0.001),Ishida et al., in,prepartion,.,Proportional of Chl within 3,m,m to total (%),Increase of small-size,phytoplankton,Increase of CSMD,Decreases of Chl and NCP,Increases of CSMD and smaller Chl,These suggest that,the change of marine ecosystem at least in the western North Pacific.,This size almost agrees with,coccolith,.,Recent remarkable,coccolith,bloom?,Change of Marine ecosystem,