Antarctic Ocean and Resources Variability - download pdf or read online

By H. van Loon, D. J. Shea (auth.), Professor Dr. Dietrich Sahrhage (eds.)

ISBN-10: 3642737242

ISBN-13: 9783642737244

ISBN-10: 3642737269

ISBN-13: 9783642737268

During the intensification of analysis actions within the Southern Ocean in recent times, either at nationwide degrees and during foreign cooperation in such initiatives as BIOMASS with its FIBEX and SIBEX levels, the necessity was once felt more and more for nearer collaboration among biologists, meteorologists, and oceanographers within the research of the interplay among the atmospheric forces, the water lots, and the residing assets. greater wisdom during this regard is not just of medical curiosity but in addition of useful value, specially for the administration of the assets and the security of the Antarctic marine surroundings. As a follow-up on a suggestion via the IOC software staff for the Southern Oceans made in March 1983, the Intergovernmental Oceanographic fee prepared a gathering of specialists on oceanography with regards to the dynamics of the Antarctic ecosystems. in this assembly, held in Kiel, Federal Republic of Ger­ many, in may possibly 1984, biologists and oceanographers thinking about BIOMASS actions met with the oceanographers of SCOR operating workforce seventy four to debate methods and capacity for added actual and chemical observations within the oceanographic learn inside BIOMASS. It was once the time while huge fluctuations within the distribution of krill with next harmful results on predator species depending on krill had simply been saw, and the query arose no matter if this was once most likely the results of alterations within the Antarctic water circulation.

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Here again only the area between 70 and 300 W was evaluated. In the Gaussian diagram the values of all longitudinal anomalies are also positioned on straight lines which look very similar to those of the latitudes. Since they lie closely together, they were combined to the full line of Fig. 11. The standard deviation of longitudinal anomalies is smaller than that for the latitudinal anomalies. • 65-70 S - a l l longitudes • 60-65 S /q, /b. ~ . ~ ~ ....... \50-55 S '\'\ b. q, ~ air pressure difference (hPa) South Atlantic 50 - 70 S, 30 - 70 W Pressure differences between different latitudes Fig.

1. --~~ lZ[ :llJI(:II Xl Xl[ Og Year Month 7 m/s 6 6 ~ hPa 5 1/1 Fig. S. Core pressure of the Weddell Sea cyclone :r 8 m/s 983 982 8 7 l :;; !! 22 5 60- 655 4 4 3 3 2 2 ITg 65-70S hPa 1006 2 '§2-1Q~ 65-705 1005 mls 1. 0 1004 1003 ]I 1002 m li 1l' il 1ZIl m "IX X ~ :xrr -2 Year Month 1001 Fig. 7. l Y. E: W m IX X xr :xIr Year Month Fig. 6. Seasonal courses and yearly means of air pressure at latitudes in summer and winter. This half-yearly cycle is much stronger than the yearly one in the regions in question.

1 Synoptic Features Normally, daily weather situations differ from monthly and seasonal means as presented in Figs. 1-4. Tracks of high and low pressure systems and distributions of anticyclone and cyclone centers per unit area around Antarctica are given, for example, by Taljaard (1967) for the IGY (1957/ 58); Kirk (1985) presents the figures for the year 1977 from 90 0 W to 40 0 E. Seifert (1984) shows multiannuallow pressure tracks for the regions of the Drake Passage, Scotia Sea, and Weddell Sea.

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Antarctic Ocean and Resources Variability by H. van Loon, D. J. Shea (auth.), Professor Dr. Dietrich Sahrhage (eds.)


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