The distribution and movement of sea ice contains a large amount of information on the coupling of sea and atmosphere. This paper uses the International Arctic Buoy Program (IABP) data and Myocean reanalysis data (ORAP 5.0 series), from 1979 to 2011. The results show that from the comparison between the measured data and the reanalysis data, there is a large deviation between the reanalysis data and the measured data in 1999. After 1999, the trend of the reanalysis data and the trend of the buoy data are similar, because the ORAP 5.0 was adopted in 1999. The new physical model makes the resulting reanalysis data more accurate. From the seasonal distribution of sea ice velocity, the sea ice flow rate is the largest in summer, followed by autumn. From the interannual variation of sea ice flow rate, before 1990, the sea ice flow rate changed year by year, and the sea ice flow rate changed more gradually. After 1990, the sea ice flow rate changed gradually. From the perspective of the sea ice flow rate and the direction of motion, the sea ice flow rate at the Fram Strait is more than 8 cm·s-1. Since the 1990s, the sea ice velocity has gradually changed to a relatively stable state. The reason may be that since the 1990s, the phenomenon of global warming "Hiatus", such as the temperature in the middle and high latitudes of Eurasia and the Atlantic Ocean in North America, has not only "temperature stagnation" but also Significant cooling. There are many MyOcean projects (130 kinds), and different types of reanalysis data are obtained by different ocean models, such as GLYYS2V3, CGLORS, UR025.4, ORAP5.0, MJM105B, etc. These data cover a wide range and the accuracy is very high (such as the sea ice concentration obtained by ORAP5.0 is basically the same as the measured data), so MyOcean data products effectively improve the ability of ocean monitoring and forecasting. This study contributes to the understanding of Arctic marine motion, climate change and marine ecology, and is of great importance to Arctic fisheries and energy development as well as shipping.
LI Yujie
,
GAO Xiaoqing
,
ZHANG Lujun
,
GUO Weidong
,
YANG Liwei
. Analysis on the Characteristics of Arctic Sea Ice Movement in Recent 30 Years[J]. Plateau Meteorology, 2019
, 38(1)
: 114
-123
.
DOI: 10.7522/j.issn.1000-0534.2018.00115
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