Tag Archives: permafrost

一篇冰川冻土中文论文

植被和土壤参数会较大影响到陆面过程模型的模拟结果,但在青藏高原的相关模拟中,通常并没有对这些参数进行专门的考虑,而相对地其他区域,青藏高原具有植被稀疏和土壤粗颗粒含量高等显著特征,那么这些特点会对多年冻土的模拟结果会有产生多大的影响?我们的研究表明,青藏高原植被土壤特性对Noah模拟结果较大影响。该成果发表在2018年第2期《冰川冻土》。

引用:吴小波,南卓铜*,王维真,赵林. 基于Noah陆面过程模型模拟青藏高原植被和土壤特征对多年冻土影响的模拟. 冰川冻土. 2018, 40(2): 279-287.

下载:官网; Baidu;

A paper on evaluation of some simple permafrost models on QTP

Zhao S, Nan Z*, Huang Y, Zhao L. The application and evaluation of simple permafrost distribution models on the Qinghai-Tibet Plateau. Permafrost and Periglacial Processes. 2017, 28(2): 391-404. DOI:10.1002/ppp.1939.

ABSTRACT

The performance of simple permafrost distribution models widely used on the Qinghai–Tibet Plateau (QTP) has not been fully evaluated. In this study, two empirical models (the elevation model and mean annual ground temperature model) and three semi-physical models (the surface frost number model, the temperature at the top of permafrost model and the Kudryavtsev model) were investigated. The simulation results from the models were compared to each other and validated against existing permafrost maps of the entire QTP and in three representative areas investigated in the field. The models generally overestimated permafrost distribution in the investigated areas, but they captured the broad characteristics of permafrost distribution on the entire QTP, and performed best in areas with colder, continuous permafrost. Large variations in performance occurred at elevations of 3800–4500 m asl and in areas with thermally unstable permafrost. The two empirical models performed best in areas where permafrost is strongly controlled by elevation, such as eastern QTP. In contrast, the three semi-physical models were better in southern island permafrost areas with relatively flat terrain, where local factors considerably impact the distribution of permafrost. Model performance could be enhanced by explicitly considering the effects of elevation zones and regional conditions.

Links: Baidu;

一篇冻土建模的中文论文

马启民,黄滢冰,南卓铜*,吴小波. 青藏高原典型多年冻土区的一维水热过程模拟研究. 冰川冻土. 2016, 38(2): 341-350.

摘要:

了解多年冻土内部的水热过程对寒区工程规划和建设的辅助决策具有重要意义。冻土的水分迁移与温度变化密切相关,然而传统的经验模型局限性大,对水热物理过程考虑不足;陆面过程模型所需的驱动数据多且很难准确模拟深层土温,尽管数值模型在工程上应用的比较多,但很少应用到冻土的演化过程中。基于非饱和土壤渗流和热传导理论,实现了冻土水分场与温度场的水热耦合数值模拟。以唐古拉综合观测场为例,将数值模拟结果与观测数据进行对比,验证水热耦合数值模拟的有效性。结果表明:模型对土壤温度模拟效果较好,15 m以上R2在0.88以上,RMSE在1℃以内;水分模拟尚可,但仍存在一定误差,R2在0.7以上,RMSE在7.65%以内。模拟的活动层厚度约3.6 m,年平均地温所在的深度约为15 m,与实测值基本一致。该水热耦合模型可用于研究多年冻土区土壤水热变化规律.

下载 (pdf, ~10.8 MB): mqm.et al. bcdt.2016

两篇与数据有关的中文论文

1. 吴立宗, 南卓铜, 王亮绪, 2014. 科学数据出版—促进数据共享的一种新模式. 中国科技资源导刊, (5): 72-78.

2. 史健宗, 南卓铜*, 赵林, 2014. 多年冻土元数据标准研究和应用. 遥感技术与应用, 29(5): 878-885

下载 (OneDrive)

吴立宗等,2014

史健宗等,2014

下载(百度云)

吴立宗等,2014

史健宗等,2014

2个冻土论文

[1] Huang P, Nan Z, Zhao L.Permafrost distribution simulation over the Qinghai-Tibet plateau with the extended surface frost number model[C]//Research Monograph of Cold and Arid Regions Engineering and Environment: A Collection of the Papers Dedicated to the 70th Birthday of Academician CHENG Guodong.Lanzhou:Lanzhou University Press,2012:240—252.[黄培培,南卓铜,赵林.利用扩展的地面冻结数模型模拟青藏高原冻土分布[C]//寒旱区工程与环境研究——程国栋院士七十华诞学术研讨会文集.兰州:兰州大学出版社,2012:240—252.]
[2] Li X, Ran Y, Nan Z, et al.A Frozen Ground Distribution Map of China by Integrating Existing Permafrost Maps and Modeling Results[C]//Research Monograph of Cold and Arid Regions Engineering and Environment: A Collection of the Papers Dedicated to the 70th Birthday of Academician CHENG Guodong.Lanzhou:Lanzhou University Press,2012:229—239.[李新,冉有华,南卓铜,等.一个融合了我国现有冻土图和模型模拟结果的中国冻土分布图[C]//寒旱区工程与环境研究——程国栋院士七十华诞学术研讨会文集.兰州:兰州大学出版社,2012:229—239.]

frostnum_qtp (pdf)

lixin_perm.pdf (pdf)