Condensation Nuclei in the Mirnyy Region

• Main Author: Voskresenskiy, A. I.
• Other Authors: FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH
• Format: Text
• Language: English
• Published: 1988
• Subjects: Meteorology; *CONDENSATION NUCLEI; *MARINE ATMOSPHERES; *ANTARCTIC REGIONS; *ATMOSPHERIC CONDENSATION; LAYERS; WIND; BOUNDARY LAYER; SURFACES; SHIFTING; RUSSIAN LANGUAGE; WIND DIRECTION; WIND VELOCITY; HOT WEATHER; TRANSLATIONS; MEAN; EFFLUENTS; CYCLONES; BOTTOM; DIURNAL VARIATIONS; ATMOSPHERIC PHYSICS; DISTRIBUTION; OCEAN SURFACE; COASTAL REGIONS; USSR; SOURCES; MIRNYY REGION; Antarctic; Kerguelen; The Antarctic; Antarc*; Antarctica
• Online Access: http://www.dtic.mil/docs/citations/ADA197424; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA197424

The number of condensation nuclei near the coast of Antarctica is extremely low and is closely tied to wind direction. In the presence of the effluent wind, the mean concentration of atmospheric condensation nuclei in the ground layer is around 60/cc, with a maximum value of 410/cc. No nuclei at all were detected in some samples. When the sea wind encroaches on the shore, the mean number of condensation nuclei increases four-fold, being 258/cc, with a maximum value of 561/cc. The encroachment of Kerguelen wind cyclones is accompanied by a larger concentration of nuclei than during cyclones which move along the Antarctic front; this is because of the trajectories of movement of these cyclones. A diurnal variation of the number of condensation nuclei is only observed during hot weather, when the wind direction shifts from the southern quadrant to the north-eastern one. The amplitude of the diurnal variations in the number of condensation nuclei reaches 200/cc. There is no diurnal variation of the distribution of condensation nuclei in the wintertime in the presence of an effluent wind and any time during a cyclone wind. No connections were observed between the wind velocity and the distribution of condensation nuclei in the ground layer. The ocean surface is the main source of atmospheric condensation nuclei in the Mirnyy region. Bedrock which protrudes onto the bottom surface causes a local increase in the number of nuclei; however, they obviously play a small part in the overall balance. Russian Translations. Trans. of Trudy Sovetskoy Antarkticheskoy Ekspeditsii Arkticheskiy i Antarkticheskiy (USSR) v38 p194-198 1968, by Carol S. Nack.