UDC S.51.513.1:S51.5~.333 Some Effects of Surface Anomalies in a Global General Circulation Model

• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: North Atlantic
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.395.1270; http://docs.lib.noaa.gov/rescue/mwr/101/mwr-101-02-0091.pdf

ABSTRACT-The Mintz-Arakawa two-level general circulation model has been used in a series of experiments to compute the response of the atmosphere to certain persistent sea-surface temperature anomalies and to changes in the position of the continental Northern Hemisphere snow line over periods up to 90 days. Results are shown in terms of differences bctwern anomaly and control histories as revealcd by global, 30-day iiiean sea-level pressure maps and time serie.: of three regional indiccs of synoptic activity. The experiments show significant intcrheniispheric effects after about 1 mo, phase shifts of 1-2 wcok.; in major cyclone developments, stronger reactions to sea-temperature anomalies in winter than in summer, and marked influcncc of the snow line on the wintrr monsoonal pressure difference between the continents and the North Atlantic Ocean. 1.