OLR (1986) 33 (12) B. Marine Meteorology 999

largest fraction of the variance was in the diurnal frequency band. Flux and the total cloud amount exhibited significant diurnal cycles which were negatively correlated. Measurements were compared with values obtained from seven different bulk formulas in order to evaluate their predictive capabilities. These formulas all predict less than 45% of the variance. Statistical predictions were used to examine the relationships between flux and other surface meteorological and oceanographic parame- ters; signs and magnitudes of the arbitrary coef- ficients in the linear hindcastors are consistent with hypotheses used for a conceptual model of radiant heat transfer between two parallel gray plates through an interacting medium. Ocean Phys. Gr., Dept. of Geol. Sci., Univ. of So. Calif., Los Angeles, CA 90089, USA.

86:6823 Yu, Zhihao and Xiaozhen Ge, 1986. Numerical

simulation for the seasonal movement of sub- tropical high ridge line. I. Heating effect of solar radiation. Acta oceanol, sin. (English version), 5(1):32-45. Dept. of Meteorol., Nanjing Univ., People's Republic of China.

BI10. Climate, climatology

86:6824 Miao, Jinhai and Minfang Ding, 1985. Catastrophe

theory of seasonal variation. Scientia sin., (B)28(10): 1079-1092.

Abrupt seasonal changes in the equilibrium state of thermally-forced, barotropic dissipative atmospheric circulation systems were studied along the Chang- jiang River valley. Northward 'jumpings' of sub- tropical highs were observed with seasonal variations of the thermal forcing parameter. Such 'jumpings' vary with meridional and zonal thermodynamics. Inst. of Meteorol., Beijing, People's Republic of China. (slr)

B I40. Air-sea interactions

86:6825 Chen, Tegu, 1985. Relationship between winter sea

surface temperature in the northern South China Sea and precipitation in the middle and lower reaches of the Changjiang (Yangtse River) in flood season. Tropic Oceanol., 4(1):71-75. (In Chinese, English abstract.)

A close relationship between winter SST in the northern South China Sea and early summer (June)

precipitation in the middle and lower reaches of the Changjiang River was found. South China Sea Inst. of Oceanol., Acad. Sin., People's Republic of China.

86:6826 Drag~evi~, Dj. and V. Pravdi~, 1986. Properties of

the seawater-air interface. 3. The electrification and energy transfer through surface films. Limnol. Oceanogr., 31(3):525-532.

Surface tension and contactless surface potential were measured simultaneously in model systems and in samples of original seawater films from the northern Adriatic area. The films were negatively charged, but the direction of energy transfer de- pended on the concentration of the film-forming material and on the rate of perturbation. At low concentrations the electrical component of inter- facial energy transfer is predominant; at higher concentrations the nonelectric predominates. The enrichment ot elements in the microlayer could be influenced by the concentration of film-forming material and by rates of perturbation of the micro- layer by mechanical forces. Lab. of Electrochem. and Surface Phenomena, Center for Mar. Res., Zagreb, Croatia, Yugoslavia.

86:6827 Graf, H.-F., 1986. On EI-Nifio/Southern Oscillation

and Northern Hemispheric temperature. Gerl. Beitr. Geophys., 95(1):63-75.

The hypothesis is developed that E1 Nifio/Southern Oscillation may be part of an innertropic auto- oscillation of the coupled ocean-atmosphere system with variable periods; it may also be triggered by thermal anomalies in higher latitudes of the North- ern Hemisphere. Such thermal anomalies can be due to volcanic eruptions in higher latitudes or be caused by an unusual expansion of the temporary snow- and ice-cover. Seven out of eight important extra- tropic volcanic eruptions since 1890 are in close connection with ENSO episodes. Humboldt-Univ. zu Berlin, Sekt. Phys., DDR-1162 Berlin, Muggelsee- datum 256, DRG.

86:6828 Kang, Y.Q., 1985. Influences of the Asian monsoon

and the Kuroshio on the sea surface temperatures in the Yellow, the Japan and the East China seas. J. oceanol. Soe. Korea, 20(2):1-9. Dept. of Oceanogr., Natl. Fish. Univ., Pusan 608, Korea.

86:6829 Lau, K.M. and P.H. Chan, 1986. The 40-50 day

oscillation and the El Nifio/Southern Oscillation: a new perspective. Bull. Am. met. Sot., 67(5): 533-534.