A West Pacific teleconnection pattern between Wilkes Land, Antarctica and the East Asian monsoon during August

emisphere. A statistically-significant teleconnection across the Equator during the month of August is detailed. The pattern can be detected with station observations and meteorological reanalyses. A similar mode during September occurs in NCAR CCM2 modeling results. The pattern in the NCEP/NCAR Reanalysis can be described as follows by proceeding from south to north. During the phase of the August pattern with anomalous low pressure near Dumont d'Urville in Wilkes Land, Antarctica and the nearby Southern Ocean, a band of anomalous high pressure is located over southeastern Australia. The band of high pressure extends eastward to north of New Zealand. This anomaly results in an intensified polar front jet stream and a weakened subtropical jet stream in the region. Also during these Augusts, anomalous high pressure is located near Japan. Correspondingly, over China, the southerly component of the low-level wind is increased along with the monsoon precipitation. A similar interhemispheric pattern is not clearly present during months adjacent to August, however, the negative correlation between southeastern Australia and the Southern Ocean near Antarctica is present during other winter months. There appear to be some connections of this interhemispheric pattern during August and the Southern Oscillation as many Augusts with the most-pronounced phases of the pattern correspond to extreme values of the Southern Oscillation Index. However, this new pattern also shows a large measure of independence from the Southern Oscillation. The pattern appears to be a significant vehicle for atmospheric communication between Antarctica and the Northern