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发帖数: 6571 | 1 Absence of 21st century warming on Antarctic Peninsula consistent with
natural variability
Nature 535, 411–415 (21 July 2016) doi:10.1038/nature18645
Received 05 February 2016 Accepted 06 June 2016 Published online 20 July
2016
http://www.nature.com/nature/journal/v535/n7612/full/nature18645.html | f**********n
发帖数: 29853 | 2 摘要是
Since the 1950s, research stations on the Antarctic Peninsula have recorded
some of the largest increases in near-surface air temperature in the
Southern Hemisphere1. This warming has contributed to the regional retreat
of glaciers2, disintegration of floating ice shelves3 and a ‘greening’
through the expansion in range of various flora4. Several interlinked
processes have been suggested as contributing to the warming, including
stratospheric ozone depletion5, local sea-ice loss6, an increase in westerly
winds5, 7, and changes in the strength and location of low–high-latitude
atmospheric teleconnections8, 9. Here we use a stacked temperature record to
show an absence of regional warming since the late 1990s. The annual mean
temperature has decreased at a statistically significant rate, with the most
rapid cooling during the Austral summer. Temperatures have decreased as a
consequence of a greater frequency of cold, east-to-southeasterly winds,
resulting from more cyclonic conditions in the northern Weddell Sea
associated with a strengthening mid-latitude jet. These circulation changes
have also increased the advection of sea ice towards the east coast of the
peninsula, amplifying their effects. Our findings cover only 1% of the
Antarctic continent and emphasize that decadal temperature changes in this
region are not primarily associated with the drivers of global temperature
change but, rather, reflect the extreme natural internal variability of the
regional atmospheric circulation. | w***g
发帖数: 5958 | 3 这么长, 请再摘要一下.
Since the 1950s, research stations on the Antarctic Peninsula have recorded
westerly
to
【在 f**********n 的大作中提到】
: 摘要是
: Since the 1950s, research stations on the Antarctic Peninsula have recorded
: some of the largest increases in near-surface air temperature in the
: Southern Hemisphere1. This warming has contributed to the regional retreat
: of glaciers2, disintegration of floating ice shelves3 and a ‘greening’
: through the expansion in range of various flora4. Several interlinked
: processes have been suggested as contributing to the warming, including
: stratospheric ozone depletion5, local sea-ice loss6, an increase in westerly
: winds5, 7, and changes in the strength and location of low–high-latitude
: atmospheric teleconnections8, 9. Here we use a stacked temperature record to
| f**********n
发帖数: 29853 | 4 最近南极变得超冷。因为观测地区只占南极的一趴，不能说全球变冷了，但是可以说地
球气候局部变化波动很大
recorded
【在 w***g 的大作中提到】
: 这么长, 请再摘要一下.
:
: Since the 1950s, research stations on the Antarctic Peninsula have recorded
: westerly
: to
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