Ambient equivalent black carbon (BC) measurements spanning from June to October have been carried out over an adjoining location of Satopanth and Bhagirath-Kharak Glaciers (3858m, amsl) of Central Himalaya during the year 2019. Hourly BC varied from 12 ng m⁻³ to 439 ng m⁻³ during the entire period of observation. Monthly averaged BC values showed the highest concentration during June (230.96 ± 85.46 ng m⁻³) and the lowest in August (118.02 ± 71.63 ng m⁻³). The decrease in BC during monsoon months is attributed to limited long-range transport and rapid wet scavenging processes. Transport model studies indicate a higher retention time of tracer in Uttarakhand, Punjab, Haryana, and adjacent polluted valley regions with increased biomass burning (BB) incidences. The high rate of BC influx during June, September, and October was attributed to transport from the polluted Indo-Gangetic Plain (IGP) region, wildfires, and vehicular emissions in the valley region. Higher equivalent brown carbon (BrC) influx is linked to BB, especially wood-burning, during intense forest fires at slopes of mountains. Data obtained from limited BC observations during the 2011–19 period showed no significant BC influx change during post-monsoon. The strong correlation between BC mass and BB affirms the dominant role of BB in contributing BC to the Glacier region. Increased TOA forcing induced by surface darkening and BC atmospheric radiative heating indicate an additional warming and possible changes of the natural snow cycle over the glacier depending on the characteristics and extent of debris cover.

2019 年，在喜马拉雅中部的 Satopanth 和 Bhagirath-Kharak 冰川 (3858m, amsl) 的毗邻位置进行了从 6 月到 10 月的环境当量黑碳 (BC) 测量。每小时 BC 为 12 ng m ^-3在整个观察期间达到 439 ng m ^{-3 。}月平均 BC 值显示 6 月份浓度最高（230.96 ± 85.46 ng m ^-3），8 月份最低（118.02 ± 71.63 ng m ^{-3 ）}）。季风月份 BC 的减少归因于有限的远程运输和快速的湿清除过程。运输模型研究表明，随着生物质燃烧 (BB) 发生率增加，北阿坎德邦、旁遮普邦、哈里亚纳邦和邻近的污染山谷地区的示踪剂保留时间更长。6 月、9 月和 10 月不列颠哥伦比亚省的高流入率归因于来自受污染的印度恒河平原 (IGP) 地区的运输、野火和山谷地区的车辆排放。在山坡上发生强烈森林火灾时，较高的当量棕色碳 (BrC) 流入与 BB 相关，尤其是木材燃烧。从 2011-19 年期间有限的 BC 观测中获得的数据显示，在季风后，BC 流入量没有显着变化。BC 质量和 BB 之间的强相关性肯定了 BB 在为冰川地区贡献 BC 中的主导作用。由表面变暗和 BC 大气辐射加热引起的 TOA 强迫增加表明冰川上的自然雪循环可能会发生额外的变暖和可能的变化，具体取决于碎片覆盖的特征和程度。