...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >Trends in sea level pressure across western Canada
【24h】

Trends in sea level pressure across western Canada

机译：加拿大西部海平面压力趋势

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper examines recent trends in sea level pressure (SLP) in western Canada. Time series of mean monthly SLP from each of 51 stations from 1956 to 1993 were analyzed for temporal and spatial trends using a number of analytical techniques, such as simple regression and correlation, trend surface analyzes, and geographical information system. Over the period, annual SLP declined at an average rate of 0.4 hPa/100 yr. Seasonal trends were clearly marked. In winter (December, January, February) and spring (March, April, May), SLP decreased at an average rate of 1.6 hPa/100 yr and 3.3 hPa/100 yr, respectively. The opposite trend was measured in the summer (+1.1 hPa/100 yr) and the fail (+2.3 hPa/100 yr). Trends in January and March were strongly negative (-9.7 hPa/100 yr and -4.3 hPa/100 yr, respectively). Equivalent values for July and October were +0.30 hPa/100 yr and +5.9 hPa/100 yr, respectively. All trends and their statistical significance levels amplified poleward. In general, trends were larger and more consistent in the Arctic and sub-Arctic, and least in British Columbia and the southern prairies. These observations suggest a weakening of the Arctic High in the winter and spring which, if correct, is in agreement with recent mild winters in the Canadian Prairies and the Arctic. [References: 21]
机译：本文研究了加拿大西部海平面压力（SLP）的最新趋势。使用许多分析技术，例如简单的回归和相关性，趋势面分析和地理信息系统，分析了1956年至1993年的51个站点中每个站点的平均每月SLP的时间序列的时空趋势。在此期间，年度SLP平均下降0.4 hPa / 100年。季节性趋势明显。在冬季（12月，1月，2月）和春季（3月，4月，5月），SLP的平均下降速度分别为1.6 hPa / 100年和3.3 hPa / 100年。相反的趋势是在夏季（+1.1 hPa / 100年）和失败（+2.3 hPa / 100年）时测得的。一月和三月的趋势非常不利（分别为-9.7 hPa / 100年和-4.3 hPa / 100年）。 7月和10月的等效值分别为+0.30 hPa / 100年和+5.9 hPa / 100年。所有趋势及其统计显着性水平均极高地放大。总体而言，北极和次北极地区的趋势更大，更一致，不列颠哥伦比亚省和南部大草原的趋势最小。这些观察表明，冬季和春季北极高压减弱了，如果正确的话，这与加拿大大草原和北极地区最近的冬季比较一致。 [参考：21]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号