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首页> 外文期刊>Atmospheric chemistry and physics >The summertime Boreal forest field measurement intensive (HUMPPA-COPEC-2010): An overview of meteorological and chemical influences
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The summertime Boreal forest field measurement intensive (HUMPPA-COPEC-2010): An overview of meteorological and chemical influences

机译：夏季北方森林田间密集测量（HUMPPA-COPEC-2010）：气象和化学影响概述

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摘要

This paper describes the background, instrumentation, goals, and the regional influences on the HUMPPA-COPEC intensive field measurement campaign, conducted at the Boreal forest research station SMEAR II (Station for Measuring Ecosystem-Atmosphere Relation) in Hyyti?l?, Finland from 12 July-12 August 2010. The prevailing meteorological conditions during the campaign are examined and contrasted with those of the past six years. Back trajectory analyses show that meteorological conditions at the site in 2010 were characterized by a higher proportion of southerly flow than in the other years studied. As a result the summer of 2010 was anomalously warm and high in ozone making the campaign relevant for the analysis of possible future climates. A comprehensive land use analysis, provided on both 5 and 50 km scales, shows that the main vegetation types surrounding the site on both the regional and local scales are: coniferous forest (Scots pine and/or Norway spruce); mixed forest (Birch and conifers); and woodland scrub (e.g. Willows, Aspen); indicating that the campaign results can be taken as representative of the Boreal forest ecosystem. In addition to the influence of biogenic emissions, the measurement site was occasionally impacted by sources other than vegetation. Specific tracers have been used here to identify the time periods when such sources have impacted the site namely: biomass burning (acetonitrile and CO), urban anthropogenic pollution (pentane and SO _2) and the nearby Korkeakoski sawmill (enantiomeric ratio of chiral monoterpenes). None of these sources dominated the study period, allowing the Boreal forest summertime emissions to be assessed and contrasted with various other source signatures.
机译：本文描述了HUMPPA-COPEC密集野外测量活动的背景，仪器，目标和区域影响，该运动在芬兰Hyyti？l？的北方森林研究站SMEAR II（用于测量生态系统-大气关系的站）上进行。 2010年7月12日至8月12日。对竞选期间的主要气象条件进行了检查，并与过去六年的气象条件进行了对比。反向轨迹分析表明，与其他年份相比，2010年该地点的气象条件是南风比例更高。结果，2010年夏季异常温暖和富含臭氧，这使得该运动与分析未来可能的气候有关。在5公里和50公里的尺度上进行的综合土地利用分析表明，该区域和地方尺度周围场地的主要植被类型为：针叶林（苏格兰松树和/或挪威云杉）;混交林（桦木和针叶树）;和林地灌木丛（例如柳树，阿斯彭）;表示该活动的结果可以作为北方森林生态系统的代表。除了生物排放的影响外，测量地点还偶尔受到除植被以外的其他来源的影响。这里使用了特定的示踪剂来确定这些来源影响该地点的时间段：生物质燃烧（乙腈和一氧化碳），城市人为污染（戊烷和SO _2）和附近的Korkeakoski锯木厂（手性单萜的对映体比率）。这些来源均未占主导地位，因此可以评估北方森林夏季排放量，并将其与其他各种来源特征进行对比。

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