• 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 >GROUND-BASED OBSERVATION OF OZONE, CARBON MONOXIDE, AND SULFUR DIOXIDE AT KENTING, TAIWAN, DURING THE PEM-WEST B CAMPAIGN
【24h】

GROUND-BASED OBSERVATION OF OZONE, CARBON MONOXIDE, AND SULFUR DIOXIDE AT KENTING, TAIWAN, DURING THE PEM-WEST B CAMPAIGN

机译：在PEM-WEST B活动期间，在台湾垦丁进行的臭氧，一氧化碳和二氧化硫的地面观测

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

Intensive measurements of chemical species were conducted during February March, 1994 at Kenting, which is at the southern tip of Taiwan, in accord with the Pacific Exploratory Measurements in the western Pacific ocean (PEM-West B) experiment. In general, frequent outbreaks of cold polar air mass dominated the synoptic weather pattern, which was led by a fast moving cold front and followed by steady northeasterly winds over the Taiwan region. There was frontal passage only eight times, each taking about 48 hours to complete. Steady northeasterly winds prevailed during most of the study period and were associated with a negligible diurnal variation of the chemical species. The median level of ozone, CO, and SO2 in the northeasterly wind was 45.7, 198, and 0.08 ppbv, respectively. Dramatic changes in the levels of O-3, CO, and SO2 occurred during each frontal passage, which was characterized by a drop in the surface pressure, a swift change in the wind direction, and a reduction in the wind speed. The ozone level dropped from 40 - 55 ppbv to about 6 - 15 ppbv at 12 - 18 hours after the time of the surface pressure minimum, and then it took about 6 - 18 hours to be restored to its original level. In the meantime, the levels of CO and SO2 also decreased in the beginning but increased dramatically up to 400 - 556 ppbv and 1 - 9.51 ppbv, respectively, right after the frontal passage. Later on, their concentration dropped back to the original steady level in a northeasterly wind. [References: 17]
机译：1994年2月，在台湾南端的垦丁进行了化学物种的强化测量，这符合西太平洋的太平洋探索性测量（PEM-West B）实验。总体而言，极冷空气的频繁爆发主导了天气的天气模式，这是由快速移动的冷锋和随后台湾地区持续的东北风引起的。仅有正面通道八次，每次大约需要48小时才能完成。在研究期间的大部分时间里，持续稳定的东北风与化学物质的日变化可忽略不计。东北风中的臭氧，一氧化碳和二氧化硫的中值分别为45.7、198和0.08 ppbv。在每个正面通道期间，O-3，CO和SO2的含量发生了剧烈变化，其特征是表面压力下降，风向迅速变化以及风速降低。在最小表面压力时间之后的12-18小时，臭氧水平从40-55 ppbv降至约6-15 ppbv，然后花费约6-18个小时恢复到原始水平。同时，CO和SO2的含量在开始时也开始下降，但在额叶通过后立即急剧上升，分别达到400-556 ppbv和1-9.51 ppbv。后来，它们的风向集中在北风下，回到原来的稳定水平。 [参考：17]

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