ABoVE:来自空气中的燃烧瓶的大气气体浓度,Arctic-CAP,2017
【摘要】 ABoVE: Atmospheric Gas Concentrations from Airborne Flasks, Arctic-CAP, 2017简介该数据集提供了 2017 年 4 月至 11 月期间,在北极碳飞机剖面 (Arctic-CAP) 月度采样活动期间,飞越阿拉斯加、育空地区和加拿大西北地区的飞行过程中获得的大气二氧化碳 (CO2)、甲烷 (CH4)、一氧化碳 (CO)、氢...
ABoVE: Atmospheric Gas Concentrations from Airborne Flasks, Arctic-CAP, 2017
简介
该数据集提供了 2017 年 4 月至 11 月期间,在北极碳飞机剖面 (Arctic-CAP) 月度采样活动期间,飞越阿拉斯加、育空地区和加拿大西北地区的飞行过程中获得的大气二氧化碳 (CO2)、甲烷 (CH4)、一氧化碳 (CO)、氢分子 (H2)、氧化亚氮 (N2O)、六氟化硫 (SF6) 和其他痕量气体的摩尔分数(即“浓度”)。数据来源于机载可编程空气瓶采样包 (PFP) 采集的全空气样本的实验室测量结果。在为期六个月的月度采样活动中,每次在北极-北方脆弱性实验 (ABoVE) 区域上空的飞行都包含 25 个垂直剖面,从地面到 6 公里高度,这些剖面的选定位置是为了补充常规的长期垂直剖面、遥感数据和地面通量塔测量数据。测量由飞机驾驶员在每个剖面内的预定位置启动,以便在每次飞行中均匀分布采样包采样点。在 55 次独立飞行中,共采集了 408 个烧瓶样本。这些测量数据对于理解北极碳循环的变化以及北极永久冻土融化带来的潜在威胁至关重要。
摘要
Variable | Units/format | Description |
---|---|---|
Sample Descriptors |
||
sample_year | YYYY | Year of the sample collection |
sample_month | M | Month of the sample collection- 4, 5, 6 (April, May, and June) |
sample_day | DD | Day of the sample collection |
sample_hour | HH | Hour of the sample collection |
sample_minute | MM | Minute of the sample collection |
sample_seconds | SS | Seconds of the sample collection |
sample_id | The sample (flask) container ID. A unique row identifier. [CAUTION: If you open this file in Excel, this column might be converted to a date format by default. “event_number” is also a unique row identifier.] | |
sample_method | A single-character code that identifies the sample collection method. All values = R | |
sample_latitude | Decimal degrees | The latitude where the sample was collected (negative (-) numbers indicate samples collected in the southern hemisphere) |
sample_longitude | Decimal degrees | The longitude where the sample was collected (negative (-) numbers indicate samples collected in the western hemisphere) |
sample_altitude | m.a.s.l. | The altitude of the sample inlet in meters above sea level (masl) |
sample_elevation | m | Surface elevation (masl) |
sample_intake_height | m | Air sample collection height above ground level (magl) |
event_number | A long integer that uniquely identifies the sampling event | |
Analysis Results (54 parameters) |
Column Names: Each parameter is reported as a set of 4 columns. To distinguish columns, the parameter abbreviation (“parameter_formula” and Table 2) is prepended to the base column name. | |
*_parameter_formula | Trace gas analyte. See Table 2 for full name. | |
*_analysis_group_abbr | Identifies the group within NOAA, GMD or the Institute of Arctic and Alpine Research (INSTAAR) at the University of Colorado Boulder that made the actual measurement: CCGG: NOAA Carbon Cycle Greenhouse Gases (CCGG) HATS: NOAA Halocarbons and other Atmospheric Trace Species (HATS) SIL: INSTAAR Stable Isotope Laboratory (SIL) |
|
*_analysis_value | The measured value. Dry air mole fraction or isotopic composition. See Table 2 for units. Missing values are denoted by -999.99 | |
*_analysis_flag | A three-character field indicating the results of the data rejection and selection process*** |
代码
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