Greenhouse Gas Cycling in Supraglacial Debris Covers

研究问题1.冰川碎屑覆盖在区域和全球主要温室气体循环中扮演什么角色？2.影响冰上碎屑覆盖层内碳气体交换的重要化学过程是什么？3.气体产生和下降的速率是多少？是否有任何控制因素？4.气体交换是否存在空间和或时间上的变化？这些成果有助于成功量化被碎屑覆盖的冰川环境中的二氧化碳和甲烷通量的速率，并解释为什么会出现这种速率。由于以前的工作难以做到这一点，这些结果的升级将是非常重要的(Sorensen等人，2014年和Sievers等人，2015年)。将使用现有的全球数据集，如伦道夫冰川清单，完成升级工作。此外，在与主管协商后，我将计划构建这项研究的结构，以便在影响力较大的期刊上发表一系列强有力的文章。这可能包括：一)对不同地点冰川通量的直接测量结果和环境控制；二

Research Questions 1. What role do debris covered glaciers play in regional and global cycling of major greenhouse gases? 2. What are the important chemical processes affecting carbon gas exchanges within supraglacial debris cover? 3. What are the rates of gas production and drawdown and are there any controlling factors? 4. Are there spatial and or temporal variabilities of gas exchanges? Outcomes To successfully quantify the rates of CO2 and CH4 fluxes within a debris covered glacier environment and to provide an explanation as to why these rates occur. The upscaling of these results would be highly significant, due to previous works struggling to do so (Sorensen et al., 2014 and Sievers et al., 2015). Upscaling would be completed using existing global datasets such as the Randolph glacier inventory. Further, in consultation with the supervisors, I would plan to structure the research to produce a strong set of publications in high impact journals. Possibly this could include: i) results of direct measurements of fluxes on glaciers in different locations and the environmental controls; ii