Observations of warming on the Western Australian continental shelf
Observations of warming on the Western Australian continental shelf
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DOI：
10.1071/mf07082
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发表时间：
2007-01-01
影响因子：
1.8
通讯作者：
Feng, Ming
中科院分区：
文献类型：
--
作者：
Pearce, Alan;Feng, Ming
全球温度数据表明，印度洋东南部的变暖趋势类似于0.02摄氏度（-1）。这一点得到了西澳大利亚大陆架沿海监测站现场温度测量的支持，该测量显示自1951年以来平均温度每年上升0.013摄氏度，相当于过去50年的0.6摄氏度。1985年至2004年期间，其他三个浅水站的测量结果表明，变暖趋势为0.026- 0.034摄氏度。据认为，进入东南印度洋的海气热通量增加可能是气温上升趋势的一个关键因素。在过去的半个世纪里，盐度也在稳步上升。在年际尺度上，各站的一致温度变率表明，较大尺度的过程正在影响大陆架沃茨，并与沿海海平面上与波浪型涛动/南方涛动有关的厄尔尼诺现象有关，因此也与列文海流有关。
Global temperature datasets indicate a warming trend in the south- eastern Indian Ocean of similar to 0.02 degrees C year(-1). This is supported by in situ temperature measurements at a coastal monitoring station on the Western Australian continental shelf that have shown a mean temperature rise of 0.013 degrees C year(-1) since 1951, corresponding to similar to 0.6 degrees C over the past 5 decades. Measurements from three other shallow stations between 1985 and 2004 indicated warming trends of 0.026- 0.034 degrees C year(-1). It is suggested that enhanced air-sea heat flux into the south-eastern Indian Ocean may be a key factor in the rising temperature trend. There has also been a steady rise in salinity over the past half- century. At interannual scales, coherent temperature variability at the various stations indicates that larger- scale processes are influencing the shelf waters and are linked with El Ni (n) over tildeo/ Southern Oscillation ( ENSO)- related events in coastal sea level and hence the Leeuwin Current.