MOISTURE BUDGET IN THE ANTARCTIC ATMOSPHERE

• Main Authors: ヤマザキ コウジ, Koji YAMAZAKI
• Format: Report
• Language: English
• Published: Meteorological Research Institute 1992
• Subjects: Antarctic; Southern Ocean; The Antarctic; Antarctic Peninsula; Antarc*; Antarctica; Polar meteorology and glaciology; Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology
• Online Access: https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3736; http://id.nii.ac.jp/1291/00003736/; https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3736&item_no=1&attribute_id=18&file_no=1

Climatologies of moisture flux, its convergence and accumulation rate for the Antarctic region are derived from the 5-year (1986-1990) twice-daily U. S. NMC (National Meteorological Center) objective analysis data. Over the Southern Ocean, eastward moisture flux is dominant, while westward flux exists along the Antarctic coastline. The annual mean moisture flux convergence (accumulation rate) is positive along the coastline; the maximum of 3mm/day is found on the west coast of the Antarctic peninsula, while it is small inland. The estimated annual accumulation over Antarctica is 135±18mm. As for the seasonal variation, the accumulation is large in winter along the coast and over Antarctica as a whole, while it is large in summer in the inland elevated region.