A New Evaporation Duct Climatology over the South China Sea

• Published in: Acta meteorologica Sinica Vol. 29; no. 5; pp. 764 - 778
• Main Author: 史阳 杨坤德 杨益新 马远良
• Format: Journal Article
• Language: English
• Published: Beijing The Chinese Meteorological Society 01.10.2015; School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072
• Subjects: Atmospheric Protection/Air Quality Control/Air Pollution; Atmospheric Sciences; Earth and Environmental Science; Earth Sciences; Geophysics and Environmental Physics; Marine; Meteorology; 南中国海; 古气候学; 时空特征; 气象数据; 波导模型; 电磁系统; 蒸发波导; 蒸发管; ISEW, South China Sea; electromagnetic wave propagation; evaporation duct climatology; spatiotemporal characteristics; atmosphere duct; the South China Sea
• ISSN: 2095-6037; 0894-0525; 2198-0934; 2191-4788
• DOI: 10.1007/s13351-015-4127-6

The climatology of evaporation ducts is important for shipborne electromagnetic system design and application. The evaporation duct climatology that is currently used for such applications was developed in the mid 1980s; this study presents efforts to improve it over the South China Sea （SCS） by using a state- of-the-art evaporation duct model and an improved meteorology dataset. This new climatology provides better evaporation duct height （EDH） data over the SCS, at a higher resolution of 0.312°×0.313°. A comparison between the new climatology and the old one is performed. The monthly average EDH in the new climatology is between 10 and 12 m over the SCS, higher than that in the old climatology. The spatiotemporal characteristics of the evaporation duct over the SCS in different months are analyzed in detail, based on the new climatology.