A Study of the Impacts of the Spatial Differences in Climate Engineering Programs on the Extreme Intensities of High-Temperature Events in China Under A 1.5°C Temperature Control Target     

孔锋 《热带气象学报(英文版)》2020,26(2):161-175

Based on the daily maximum temperature data and average temperature data prediction for the period ranging from 2020 to 2099 under the scenario of BNU-ESM climate engineering (G4 test) and non-climate engineering (RCP4.5), the regional differences in the extreme high-temperature intensities in China during the implementation of climate engineering programs (2020 to 2069) and after the implementation of those programs (2070 to 2099) were analyzed using a Weibull Distribution Theory. The results indicated the following: (1) The results of this study’s comparison between the two scenarios had shown that climate engineering had not fundamentally changed the spatial features of the high and low differentiations for the extreme high-temperature intensities with the different recurrence periods in China. It was found that in both scenarios, the extreme high-temperature intensities were characterized by the spatial differentiations of low-temperature intensities on the Qinghai-Tibet Plateau, and high-temperature intensities in the eastern and northwestern region; (2) This study’s comparison results of the two scenarios had indicated that the climate engineering processes during the two study periods could potentially help mitigate the extreme high-temperature intensities with different recurrence periods in China. Furthermore, the mitigation effects during the implementation period would be significantly higher than those after the implementation; (3) This study’s results of the comparison between the periods ranging from 2020 to 2069 and 2070 to 2099 under the proposed climate engineering scenarios suggested that there would be no strong rebounding of the extreme high-temperatures following the implementation of climate engineering programs, and the mitigation effects on the extreme high-temperature intensities during the implementation of the climate engineering programs would be significantly higher than after the implementation of the programs; (4) When comparisons were made of the changes of the average temperatures in China before and after the implementation of climate engineering programs, the results had shown that the average temperature in China had been reduced by at least 1.25℃ as a result of climate engineering, which would effectively alleviate the global warming trend, and could also be conducive to the realization of a temperature control target of 1.5℃ in accordance with the Paris Agreement.  相似文献   

一种中国南海海绵Xestospongia testudinaria中化学成分的研究     

孔雯雯  韩磊  李亮  邵长伦  章蓉  王长云 《中国海洋大学学报(自然科学版)》2011,41(11):86-90

综合运用正相和反相硅胶柱层析、Sephadex LH-20凝胶柱层析以及制备HPLC等分离方法,从1种中国南海海绵Xestospongia testudinaria中追踪分离抗肿瘤活性次级代谢产物。从95%乙醇提取物中分离获得8个单体化合物,通过NMR,MS等波谱技术鉴定其结构分别为:E-18,18-二溴-9,17-二烯-5,7-二炔硬脂酸甲酯(1),E-18,18-二溴-9,17-二烯-5,7-二炔硬脂酸乙酯(2),麦角甾-5,7,22-三烯-3-醇(3),麦角甾-4,6,8(14),22-四烯-3-酮(4),胆甾-4-烯-3-酮(5),3-吲哚醛(6),3-吲哚酸(7)和5-吲哚醛(8)。其中,化合物2-5和8为首次从该属海绵中分离得到。化合物1对肿瘤细胞株HCT116和A549显示较强的抑制活性。  相似文献   

金矿化局部预测中的真空爆裂法     

А·Ф·安季波夫  孔祥兴 《黄金地质》1989,(4)

真空爆裂法为温压地球化学方法的一种。所用样品为岩石。使用数字方法和计算技术整理测量结果及查明测量结果的意义。该法与其他温压地球化学方法的资料一起,可用于解决许多地质勘探中的实际问题。  相似文献   

西澳地盾太古宙金矿床的成因和构造控制—一种变质交代作用模式     

David Groves  Neil Phillips  卢祥生 《华北地质》1989,(2)

引言随着作为世界黄金主要来源的太古宙金矿目前勘查和开采的迅猛发展,提供了更多与其物理和化学特征有关的文献,并引起了种种后生模式和同生模式的争论。金矿定位的区域范围和矿山范围的控制已进行了正常讨论,但还很少研究绿岩带、克拉通或地盾范围内,涉及全球性金矿化作用的太古宙绿岩带或矿化控制的根本原因。尽管如此,两个太古宙金矿床的明显特点已深信无疑,这就是:①实际上限于绿岩带内;②呈不均匀  相似文献   

一、国外元古宙铅-锌-铜多金属矿床研究的新进展     

卢祥生 《华北地质》1989,(4)

该文是天津地质矿产研究所情报研究室的情报调研成果,经系统搜集了1980年以来有关国外元古宙铅-锌-铜多金属矿床的新资料汇编而成。现征得作者同意在本刊全文刊载,供读者参考。因篇幅较长,分两期刊完。  相似文献   

国外元古宙铅—锌—铜多金属矿研究进展     

李上森  卢祥生 《国外前寒武纪地质》1989,(4):1-94

  相似文献   

柳家坡滑坡群调研及其成因分析     

缪祥生 《西安地质学院学报》1989,11(3):57-62

  相似文献   

西澳地盾太古宙金矿床的成因和构造控制：一种变质交代作用模式     

Grov.  DI  卢祥生 《前寒武纪研究进展》1989,(2):1-22

  相似文献   

碧口群内冰川沉积及冰期的划分与对比          下载免费PDF全文

赵祥生  邹湘华 《地质科学》1992,(3):260-268

碧口群内前人曾怀疑为冰碛岩的一套岩石,已取得了大量冰川证据,肯定了冰川作用的存在。其时代属早震旦世。据沉积特征、层位及上下接触关系等,将其划为长安、南沱两个冰期,南沱冰期又进一步划分为两个亚冰期,并分别与国内外有关地区作了对比。  相似文献   

云南金顶铅锌矿床方铅矿溶解实验及紫外吸收光谱特征     

万永文  孔世雄 《矿物岩石》1994,14(2):33-36

在进行金顶铅锌矿床方铅矿溶解实验的基础上，测定并讨论溶解液的紫外吸收光谱特征，确定溶解液中铅的存在形式，进而初步探讨铅在含矿流体中的迁移形式。  相似文献