| 1961—2018年陕西极端气温时空变化特征 |
| |
| 引用本文： | 郑小华,娄盼星,马永永.1961—2018年陕西极端气温时空变化特征[J].气象与环境学报,2021,37(3):81-87. |
| |
| 作者姓名： | 郑小华 娄盼星 马永永 |
| |
| 作者单位： | 1. 陕西省气象台, 陕西 西安 7100152. 陕西省气象科学研究所, 陕西 西安 710015 |
| |
| 基金项目： | 国家自然科学基金(41875082) |
| |
| 摘 要： | 基于陕西1961—2018年94个气象台站逐日气温资料，选取世界气象组织(WMO)提出的10种极端气温指数，分陕北、关中和陕南三个气候区，采用线性趋势分析、Mann-Kendall突变分析和Morlet小波分析，分析了陕西极端气温事件的时空变化特征。结果表明：陕西各极端气温指数在近60 a发生了显著变化，热指数的增加趋势较冷指数的减少趋势更为明显且年际间波动较大，夜指数的变化较相应的日指数变化更为突出，其中暖夜天数的增幅达到了7.4 d/10 a。除极端最低气温外，其余冷指数在1995年前后出现突变，而暖夜和暖昼天数突变发生在2005年以后。冰日、冷昼和热夜天数变化趋势呈现出明显的纬向特征，关中的极端最低气温、冷夜天数、暖夜天数、霜冻天数和夏日天数变化趋势较其他两个区域更为显著。极端指数的周期性变化主要集中在2—8 a。相较于极值指数，相对指数和绝对指数的变化均能较好的反映陕西年平均最高和最低气温的变化趋势。
|
| 关 键 词： | 极端气温 指数 气候变化 |
| 收稿时间： | 2020-07-16 |
Spatial and temporal variation characteristics of extreme temperature in Shaanxi province from 1961 to 2018 |
| |
| Xiao-hua ZHENG,Pan-xing LOU,Yong-yong MA.Spatial and temporal variation characteristics of extreme temperature in Shaanxi province from 1961 to 2018[J].Journal of Meteorology and Environment,2021,37(3):81-87. |
| |
| Authors: | Xiao-hua ZHENG Pan-xing LOU Yong-yong MA |
| |
| Institution: | 1. Shaanxi Meteorological Observatory, Xi'an 710015, China2. Institute of Meteorological Science of Shaanxi province, Xi'an 710015, China |
| |
| Abstract: | Based on the daily temperature data of 94 meteorological stations in Shaanxi province from 1961 to 2018, ten types of extreme temperature indices proposed by WMO were employed to analyze the spatio-temporal characteristics of extreme temperature events in three climate regions of Shaanxi province i.e.Shanbei, Guanzhong, and Shannan using linear trend rate, Mann-Kendall and wavelet methods.The results show that the extreme temperature indices significantly change in the past 60 years in Shaanxi province.The increasing trend of the thermal index is more obvious than the decreasing trend of the cold index with a large inter-annual variation.The change of the night index is more prominent than that of the corresponding day index.Among them, the warm night days increase with a rate of 7.4 d per decade.Except for the extreme minimum temperature, the other cold indices change abruptly around 1995, while the abrupt changes for the numbers of warm night and warm day both occur after 2005.The change trends of ice days, cold days, and hot night days all indicate the most obvious zonal characteristics.The change trends of extreme minimum temperature, cold night days, warm night days, frost days, and summer days in Guanzhong are more significant than in the other two regions.The cyclical changes of the extreme index are mainly concentrated between 2 years and 8 years.Compared with the extreme index, the changes of the relative index and the absolute index are capable to better reflect the change trends in the annual average maximum and minimum temperatures in Shaanxi province. |
| |
| Keywords: | Extreme temperature Index Climate change |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《气象与环境学报》浏览原始摘要信息 |
| 点击此处可从《气象与环境学报》下载免费的PDF全文 |
|
