WT5BZ] The variations of meteorological elements such as temperature, pressure, humidity, wind speed, cloud cover, radiation components and ice temperature, the weather process as well are presented based on the data obtained by Chinese National Arctic Expedition on a drifting ice at (75°N,160°W) in Arctic Ocean in August 19-24,1999.

Characteristics of heat balance parameters of Arctic Ocean drifting ice and open sea are presented based on the profile flux method and the data obtained by the First Chinese National Arctic Research Expedition during Aug.

The recent progress in the studies of Arctic pack ice ecology;

Based on the marine hydrographic data observed in the sea area(64°00′ to 69°15′S,68°00′ to 76°00′E) during the 22nd Antarctic Expedition of China in the 2005/2006 austral summer,the water mass characteristics in the floe area near the north edge of Emery ice shelf in the Prydz Bay are analyzed.

With dual beam path spectrophotometer,the transmitted spectra of the five natural iceland crystal samples with different appearance colour have been tested.

The authors deduced a dispersion equation of Iceland crystal by fitting with computer, it agreeded very well with the experimental findings in the spectral reigon from near ultraviolet band to near infrared band.