...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Paleoceanography >Changes in the intermediate water mass formation rates in the global ocean for the Last Glacial Maximum, mid-Holocene and pre-industrial climates
【24h】

Changes in the intermediate water mass formation rates in the global ocean for the Last Glacial Maximum, mid-Holocene and pre-industrial climates

机译：最后一次冰期最高，全新世中期和工业化前期气候在全球海洋中水形成速率的变化

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

The paleoclimate version of the National Center for Atmospheric Research Community Climate System Model version 3 (NCAR-CCSM3) is used to analyze changes in the water formation rates in the Atlantic, Pacific, and Indian Oceans for the Last Glacial Maximum(LGM), mid-Holocene(MH)and pre-industrial(PI)control climate. During the MH, CCSM3 exhibits a north-south asymmetric response of intermediate water subduction changes in the Atlantic Ocean, with a reduction of 2 Sv in the North Atlantic and an increase of 2 Sv in the South Atlantic relative to PI. During the LGM, there is increased formation of intermediate water and a more stagnant deep ocean in the North Pacific. The production of North Atlantic Deep Water(NADW)is significantly weakened. The NADW is replaced in large extent by enhanced Antarctic Intermediate Water(AAIW), Glacial North Atlantic Intermediate Water(GNAIW), and also by an intensified of Antarctic Bottom Water(AABW), with the latter being a response to the enhanced salinity and ice formation around Antarctica. Most of the LGM intermediate/mode water is formed at 27.4 < σ _θ < 29.0 kg/m ~3, while for the MH and PI most of the subduction transport occurs at 26.5 < σ _θ < 27.4 kg/m ~3. The simulated LGM Southern Hemisphere winds are more intense by 0.2-0.4 dyne/cm ~2. Consequently, increased Ekman transport drives the production of intermediate water(low salinity)at a larger rate and at higher densities when compared to the other climatic periods.
机译：国家大气研究社区气候系统模型版本3（NCAR-CCSM3）的古气候版本用于分析大西洋，太平洋和印度洋最后一次冰盛期（LGM）中期水形成速率的变化-全新碳氢化合物（MH）和工业化前（PI）控制气候。在MH期间，CCSM3表现出大西洋中水俯冲变化的南北不对称响应，与PI相比，北大西洋的南水减少2 Sv，南大西洋的南水增加2 Sv。在LGM期间，北太平洋的中间水形成增加，深海停滞不前。北大西洋深水（NADW）的产量被大大削弱。 NADW在很大程度上被增强的南极中间水（AAIW），北冰洋大西洋中间水（GNAIW）以及增强的南极底水（AABW）取代，后者是对盐分和冰量增加的反应在南极洲周围形成。 LGM中/模态水的大部分形成于27.4 <σθ<29.0 kg / m〜3，而MH和PI的大部分俯冲运移发生于26.5 <σθ<27.4 kg / m〜3。模拟的LGM南半球风的强度更大，为0.2-0.4达因/厘米〜2。因此，与其他气候时期相比，增加的埃克曼输运量以更高的速率和更高的密度推动了中间水（低盐度）的生产。

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