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首页> 外文期刊>Aerobiologia >Ultraviolet light measurements (280-400 nm) acquired from stratospheric balloon flight to assess influence on bioaerosols
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Ultraviolet light measurements (280-400 nm) acquired from stratospheric balloon flight to assess influence on bioaerosols

机译:从平流层气球飞行中获得紫外光测量值(280-400 nm),以评估对生物气溶胶的影响

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摘要

Viable microorganisms collected from the Earth's upper atmosphere are mysterious considering the intensely biocidal ultraviolet (UV) light conditions dominating rarefied air. Historically, most investigations examining the relationship between bioaerosols and UV conditions in the upper atmosphere have relied upon model-generated data. To address the shortage of in situ UV measurements in the upper troposphere and lower/middle stratosphere, we flew a meteorological balloon equipped with a UV radiometer and other core environmental sensors. The balloon payload launched from Illinois, USA, on October 6, 2018, and acquired UVA (315-400 nm) + UVB (280-315 nm) measurements for ~ 2 h up to 30.9 km. Above the atmospheric boundary layer, UVA + UVB values registered around 6 mW cm(-2), results that were largely consistent with Tropospheric Ultraviolet-Visible model predictions. Performed in a low-cost, reusable manner with commercially available instruments, we show that reliable UV flux data can be acquired with meteorological balloon payload systems. This short communication provides relevant UVA + UVB results for aerobiology and astrobiology studies evaluating the survivability of microorganisms in the upper atmosphere.
机译:考虑到在稀有空气中占主导地位的强烈杀菌(UV)光条件,从地球高层大气中收集的活微生物是神秘的。历史上,大多数检查生物气溶胶与高层大气中紫外线条件之间关系的研究都依赖于模型生成的数据。为了解决对流层上部和平流层下部/中间平流层中原位紫外线测量的不足,我们飞了一个装有紫外线辐射计和其他核心环境传感器的气象气球。气球有效载荷于2018年10月6日从美国伊利诺伊州发射升空,并在30.9 km的2小时内获得了UVA(315-400 nm)+ UVB(280-315 nm)的测量值。在大气边界层以上,UVA + UVB值记录在6 mW cm(-2)左右,其结果与对流层紫外线可见模型的预测基本一致。用市售仪器以低成本,可重复使用的方式执行的操作表明,可以使用气象气球有效载荷系统获取可靠的紫外线通量数据。这段简短的交流为航空生物学和天体生物学研究提供了相关的UVA + UVB结果,以评估微生物在高层大气中的生存能力。

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