Greenhouse Gas Cycling in Supraglacial Debris Covers

研究问题碎片覆盖的冰川在主要温室气体的区域和全球循环中起什么作用？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. 产气速率和递减速率是多少？是否存在控制因素？4. 气体交换是否存在空间和/或时间上的变化？成功地量化了碎屑覆盖的冰川环境中CO2和CH4通量的速率，并解释了这些速率发生的原因。由于之前的工作难以做到这一点，这些结果的升级将非常重要（Sorensen等人，2014年和Sievers等人，2015年）。升级将使用现有的全球数据集，如伦道夫冰川清单来完成。此外，在与导师协商后，我将计划在高影响力期刊上发表一套强有力的出版物。这可能包括：i)直接测量不同地点冰川通量和环境控制的结果；2

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