利用戈达德太空研究所(Goddard Institute for Space Studies,GISS/NASA)建立的全球网格点月平均地表温度距平序列,通过一元线性回归、M-K检验对中亚地区1880～2011年地面气温变化的基本特征进行分析和讨论。结果表明:近130 a来,中亚地...利用戈达德太空研究所(Goddard Institute for Space Studies,GISS/NASA)建立的全球网格点月平均地表温度距平序列,通过一元线性回归、M-K检验对中亚地区1880～2011年地面气温变化的基本特征进行分析和讨论。结果表明:近130 a来,中亚地区温度变化趋势率为0.073℃/10 a,接近于全球,高于我国的近百年温度变化趋势率;中亚地区1、4、10月呈增温趋势,其中1月份温度变化幅度最大,4、10月份增温趋势率较大;而7月份呈微弱降温趋势。中亚地区年平均温度在20世纪80年代初期发生突变,出现较大的增温趋势,尤其是近50 a,增温明显。展开更多
The temperature change trends in January and July are analyzed and the results show that the trends descend in July but ascend in January except in South China and Southwest China. The relation between the temperature...The temperature change trends in January and July are analyzed and the results show that the trends descend in July but ascend in January except in South China and Southwest China. The relation between the temperature in January and July are discussed by using the wavelet. The results show that the trend phase in July and January are nearly in-phase in Southwest and South China, but are out-of-phase in other regions. Reconstruction of original temperature series in each of the regions indicates that their change trends are consistent with the original temperature series.展开更多
With the series of annual and seasonal temperature during 1957 – 2001 in Dongguan, Guangdong, the statistical characteristic and power spectrum and secular trend and sudden change phenomena are computed in this paper...With the series of annual and seasonal temperature during 1957 – 2001 in Dongguan, Guangdong, the statistical characteristic and power spectrum and secular trend and sudden change phenomena are computed in this paper. From the results it is known that (1) the temperatures have obvious characteristics of monsoon climate but do not have normal distribution, showing biased distribution of high or low kurtosis; (2) over the recent half- century, the temperatures tend to rise, specially in the last 10 years, in which mean temperature have quickly ascended by about 1.5°C, and except for the spring, there were sudden change of seasonal temperature rising from the 1980’s to 1990’s, which really reflected the influence of developing and opening and urbanization on Dongguan temperature; (3) except for the spring, the temperature of other seasons show some oscillatory periods in Dongguan and some of them also include long-term variation trends.展开更多
The observational sea surface temperature(SST)data from 1960 to 2017 of the Chengshantou marine station has been adjusted by the Penalized Maximal Test(PMT)developed by the Climate Research Center of the Environment M...The observational sea surface temperature(SST)data from 1960 to 2017 of the Chengshantou marine station has been adjusted by the Penalized Maximal Test(PMT)developed by the Climate Research Center of the Environment Ministry of Canada,based on the metadata archive.In this study,the homogenous surface air temperature(SAT)data from neighboring meteorological observation stations are used to construct the reference series by correlation coefficient weighted averaged method.The climate change characteristics of the Chengshantou SST were analyzed using the homogenized data.Results show that the annual average SST trend has changed significantly before and after the homogenization.The warming trend increased from 0.04℃/10 a before revision to 0.15℃/10 a.The warmest five years occurred mostly after 1980,that is,1973,1989,2002,2007 and 2017.SST generally showed a significant upward trend and significant inter-decadal fluctuations.From the 1960s to the end of the 1980s,it was a colder stage,and then began to warm up.It was a warmer period from the 1990s to the present.From 1960 to 2017,the jump point occurred in 1987,which is very consistent with the temperature characteristics of China's mainland.展开更多
The climate distribution and variation characteristics of temperature and salinity i n the upper surface layer of Sulawesi Sea(117-127°E,0-8°N)were analyzed using Argo T/S profiles of 0-1500 m and XBT temper...The climate distribution and variation characteristics of temperature and salinity i n the upper surface layer of Sulawesi Sea(117-127°E,0-8°N)were analyzed using Argo T/S profiles of 0-1500 m and XBT temperature profiles obtained by Chinese Antarctic scientific investigation.The results show that the temperature and salinity are respectively about 2.5℃-30℃ and 33.2‰-35.1‰ in the Sulawesi sea.Compared with the vertical changes,the T/S horizontal gradients are smaller.The temperatures gradually reduce with the in crease of the depth.The sali nities increase firstly,then decrease,and increase finally with the increase of depth.The salinity has two lower and one higher salinity areas.The whole sea surface shows the characteristics of high temperature and low salinity.T he subsurface temperature is slightly lower with salinity increasing.Middle depths are characterized by high temperature and high salinity.At the depth of 500 m,the temperature and salinity tend to be uniform.And at the bottom,T/S represent lower temperature with higher salinity.Moreover,an obvious thermocline exists at the depth of 50 m-150 m.The thermocline depth in summer is less than 90 m and is about 110 m in winter.The thermocline exists in the deeper depth in April than that of November by XBT observation sections.In the central of Sulawesi Sea,the thermocline is also relatively deeper.展开更多
文摘利用戈达德太空研究所(Goddard Institute for Space Studies,GISS/NASA)建立的全球网格点月平均地表温度距平序列,通过一元线性回归、M-K检验对中亚地区1880～2011年地面气温变化的基本特征进行分析和讨论。结果表明:近130 a来,中亚地区温度变化趋势率为0.073℃/10 a,接近于全球,高于我国的近百年温度变化趋势率;中亚地区1、4、10月呈增温趋势,其中1月份温度变化幅度最大,4、10月份增温趋势率较大;而7月份呈微弱降温趋势。中亚地区年平均温度在20世纪80年代初期发生突变,出现较大的增温趋势,尤其是近50 a,增温明显。
文摘The temperature change trends in January and July are analyzed and the results show that the trends descend in July but ascend in January except in South China and Southwest China. The relation between the temperature in January and July are discussed by using the wavelet. The results show that the trend phase in July and January are nearly in-phase in Southwest and South China, but are out-of-phase in other regions. Reconstruction of original temperature series in each of the regions indicates that their change trends are consistent with the original temperature series.
文摘With the series of annual and seasonal temperature during 1957 – 2001 in Dongguan, Guangdong, the statistical characteristic and power spectrum and secular trend and sudden change phenomena are computed in this paper. From the results it is known that (1) the temperatures have obvious characteristics of monsoon climate but do not have normal distribution, showing biased distribution of high or low kurtosis; (2) over the recent half- century, the temperatures tend to rise, specially in the last 10 years, in which mean temperature have quickly ascended by about 1.5°C, and except for the spring, there were sudden change of seasonal temperature rising from the 1980’s to 1990’s, which really reflected the influence of developing and opening and urbanization on Dongguan temperature; (3) except for the spring, the temperature of other seasons show some oscillatory periods in Dongguan and some of them also include long-term variation trends.
文摘The observational sea surface temperature(SST)data from 1960 to 2017 of the Chengshantou marine station has been adjusted by the Penalized Maximal Test(PMT)developed by the Climate Research Center of the Environment Ministry of Canada,based on the metadata archive.In this study,the homogenous surface air temperature(SAT)data from neighboring meteorological observation stations are used to construct the reference series by correlation coefficient weighted averaged method.The climate change characteristics of the Chengshantou SST were analyzed using the homogenized data.Results show that the annual average SST trend has changed significantly before and after the homogenization.The warming trend increased from 0.04℃/10 a before revision to 0.15℃/10 a.The warmest five years occurred mostly after 1980,that is,1973,1989,2002,2007 and 2017.SST generally showed a significant upward trend and significant inter-decadal fluctuations.From the 1960s to the end of the 1980s,it was a colder stage,and then began to warm up.It was a warmer period from the 1990s to the present.From 1960 to 2017,the jump point occurred in 1987,which is very consistent with the temperature characteristics of China's mainland.
文摘The climate distribution and variation characteristics of temperature and salinity i n the upper surface layer of Sulawesi Sea(117-127°E,0-8°N)were analyzed using Argo T/S profiles of 0-1500 m and XBT temperature profiles obtained by Chinese Antarctic scientific investigation.The results show that the temperature and salinity are respectively about 2.5℃-30℃ and 33.2‰-35.1‰ in the Sulawesi sea.Compared with the vertical changes,the T/S horizontal gradients are smaller.The temperatures gradually reduce with the in crease of the depth.The sali nities increase firstly,then decrease,and increase finally with the increase of depth.The salinity has two lower and one higher salinity areas.The whole sea surface shows the characteristics of high temperature and low salinity.T he subsurface temperature is slightly lower with salinity increasing.Middle depths are characterized by high temperature and high salinity.At the depth of 500 m,the temperature and salinity tend to be uniform.And at the bottom,T/S represent lower temperature with higher salinity.Moreover,an obvious thermocline exists at the depth of 50 m-150 m.The thermocline depth in summer is less than 90 m and is about 110 m in winter.The thermocline exists in the deeper depth in April than that of November by XBT observation sections.In the central of Sulawesi Sea,the thermocline is also relatively deeper.
