CHARACTERISTICS ON INTERANNUAL VARIATIONS OF NORTH PACIFIC SST AND ITS RELATION TO EAST ASIA CLIMATE     

解思梅  TAKASHI AOKI  MASATOSHI M. YOSHINO 《海洋学报(英文版)》1987,6(1):68-79

The interannual variations of the monthly sea surface temperature (SST) in the North Pacific (including Equatorial East Pacific) during 1951-1980 are analysed by means of EOF method. The findings are:(1) In the cold and warm ocean current areas, such as the North Pacific Current, the California Current and the Equatorial East Pacific areas, the convergence speeds are the fastest, while in the Kuroshio and the western part of the North Equatorial Current areas they are fast only in winter.(2) The physical features of the first 3 eigenvectors are obvious. The first eigenvector shows that the SST values are high in the south and low in the north in the latitudinal distribution of the SST field. The warm current area, i.e. the northwestern part of the North Pacific is positive and the cold current area, i.e. the southeastern part of the North Pacific including the Eastern Equatorial Pacific is negative. The zero line of the 2nd eigenvector field runs from northeast to southwest, in the same direction as the  相似文献   

Identification of CO₂ disposal locations in an ocean general circulation model of the North Pacific     

XU Yongfu  AOKI Shigeaki  HARADA Koh 《海洋学报(英文版)》2009,28(1):15-24

A basinwide ocean general circulation model of the North Pacific is used to identify which location is more efficient for ocean CO2 sequestration in the North Pacific. Four injection depths at each one of fifteen locations are chosen. In terms of effectiveness index (EI) and escape factor (EF), it is clear that the effectiveness increases with increasing latitude at the end of the 50 a injection period. Sitebysite differences in the EI can be over 9% for the 1 000 m injection depth in the western North Pacific at the end of 50 a of continuous injection. The difference is much larger for the 500 m injection. The difference decreases with increasing injection depth. However, the sitebysite difference is small for the injection in the eastern North Pacific. The sequestration is more efficient for the injection in the east than in the west. For the 500 m injection depth, the difference in effectiveness between the west and the east is over 10% at the end of 50 a injection period. The largest concentration of sequestered CO2 increases with increasing injection depth. For the injection in both the western and central North Pacific, the largest exchange flux always appears to be at about 42°N, 150°E, whereas for the injection in the eastern area the large flux appears to be in the equatorial region (120°W).  相似文献   

The concentration of atmospheric carbon dioxide at the Japanese Antarctic Station, Syowa     

T. NAKAZAWA  S. AOKI  S. MURAYAMA  M. FUKABORI  T. YAMANOUCHI  H. MURAYAMA  M. SHIOBARA  G. HASHIDA  S. KAWAGUCHI  M. TANAKA 《Tellus. Series B, Chemical and physical meteorology》1991,43(2):126-135

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Carbon dioxide variations in the stratosphere over Japan, Scandinavia and Antarctica     

S. AOKI  T. NAKAZAWA  T. MACHIDA  S. SUGAWARA  S. MORIMOTO  G. HASHIDA  T. YAMANOUCHI  K. KAWAMURA  H. HONDA 《Tellus. Series B, Chemical and physical meteorology》2003,55(2):178-186

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Reconstruction of past variations of δ¹³C in atmospheric CO₂ from its vertical distribution observed in the firn at Dome Fuji, Antarctica     

S. SUGAWARA  K. KAWAMURA †  S. AOKI  T. NAKAZAWA  G. HASHIDA 《Tellus. Series B, Chemical and physical meteorology》2003,55(2):159-169

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Temporal variations of the CO₂ concentration and its carbon and oxygen isotopic ratios in a temperate forest in the central part of the main island of Japan     

TAKAKIYO NAKAZAWA  SHOHEI MURAYAMA  MITSUKO TOI  MISA ISHIZAWA  KAORI OTONASHI  SHUJI AOKI  SUSUMU YAMAMOTO 《Tellus. Series B, Chemical and physical meteorology》1997,49(4):364-381

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Atmospheric CO₂ variations over the last three glacial–interglacial climatic cycles deduced from the Dome Fuji deep ice core, Antarctica using a wet extraction technique     

KENJI KAWAMURA  TAKAKIYO NAKAZAWA  SHUJI AOKI  SATOSHI SUGAWARA  YOSHIYUKI FUJII  OKITSUGU WATANABE 《Tellus. Series B, Chemical and physical meteorology》2003,55(2):126-137

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Concentration variations of atmospheric CO₂ observed at Syowa Station, Antarctica from 1984 to 2000     

SHINJI MORIMOTO  TAKAKIYO NAKAZAWA  SHUJI AOKI  GEN HASHIDA  TAKASHI YAMANOUCHI 《Tellus. Series B, Chemical and physical meteorology》2003,55(2):170-177

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TransCom 3 CO₂ inversion intercomparison: 1. Annual mean control results and sensitivity to transport and prior flux information     

KEVIN ROBERT GURNEY  RACHEL M. LAW  A. SCOTT DENNING  PETER J. RAYNER  DAVID BAKER  PHILIPPE BOUSQUET  LORI BRUHWILER  YU-HAN CHEN  PHILIPPE CIAIS  SONGMIAO FAN  INEZ Y. FUNG  MANUEL GLOOR  MARTIN HEIMANN  KAZ HIGUCHI  JASMIN JOHN  EVA KOWALCZYK  TAKASHI MAKI  SHAMIL MAKSYUTOV  PHILIPPE PEYLIN  MICHAEL PRATHER  BERNARD C. PAK  JORGE SARMIENTO  SHOICHI TAGUCHI  TARO TAKAHASHI  CHIU-WAI YUEN 《Tellus. Series B, Chemical and physical meteorology》2003,55(2):555-579

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Crustal Growth by Magmatic Accretion Constrained by Metamorphic P-T Paths and Thermal Models of the Kohistan Arc, NW Himalayas   总被引：2，自引：0，他引：2  

YOSHINO  TAKASHI; OKUDAIRA  TAKAMOTO 《Journal of Petrology》2004,45(11):2287-2302

Magmatic accretion is potentially an important mechanism inthe growth of the continental crust and the formation of granulites.In this study, the thermal evolution of a magmatic arc in responseto magmatic accretion is modeled using numerical solutions ofthe one-dimensional heat conduction equation. The initial andboundary conditions used in the model are constrained by geologicalobservations made in the Kohistan area, NW Himalayas. Takingconsideration of the preferred intrusion locations for basalticmagmas, we consider two plausible modes of magmatic accretion:the first involves the repeated intrusion of basalt at mid-crustaldepths (‘intraplate model’), and the second evaluatesthe simultaneous intrusion of basalt and picrite at mid-crustaldepths and the base of the crust respectively (‘double-platemodel’). The results of the double-plate model accountfor both the inferred metamorphic P–T paths of the Kohistanmafic granulites and the continental geotherm determined frompeak P–T conditions observed for granulite terranes. Thedouble-plate model may be applicable as a key growth processfor the production of thick mafic lower crust in magmatic arcs. KEY WORDS: thermal model; magmatic underplating; P–T path; granulite; lower crust  相似文献