BORTAS: In-situ Atmospheric Airborne and model data

The Quantifying the impact of BOReal forest fires on Tropospheric oxidants over the Atlantic using Aircraft and Satellites (BORTAS) project provides information on the connection between the composition and the distribution of biomass burning outflow, ozone production and loss within the outflow, and the resulting perturbation to oxidant chemistry in the troposphere. The BORTAS team sampled biomass burning outflow over the North Atlantic in summer 2011 the using Facility for Airborne Atmospheric Measurements (FAAM) BAe-146 aircraft. The data were then used to describe the observed chemistry within plumes and to quantify the impact of boreal fires on the North Atlantic region using a nested 3-D chemistry transport model.

This dataset contains atmospheric aircraft and model data.

Science Objectives of BORTAS:

-Sample biomass burning outflow from boreal North America over the western boundary of the North Atlantic during summer 2011 using the FAAM BAe146 aircraft;
-Describe observed chemistry within plumes by using the measurements to constrain the Master Chemical Mechanism (MCM), with particular attention to the NOy and organic chemistry;
-Derive a reduced chemical mechanism suitable for a global Chemical Transport Model (CTM) that accurately describes chemistry within the plumes;
-Quantify the impact of boreal forest fires on oxidant chemistry over the temperate and subtropical Atlantic using a nested 3-D chemistry transport model, driven by a subset of MCM chemistry and by assimilated field measurements; and
-Detect, validate and quantify the impact of boreal biomass burning on global tropospheric composition using data from space-borne sensors.

The FAAM airborne sampling element of the BORTAS project took place in July and August 2011.

BOReal森林火灾对大西洋对流层氧化剂影响的量化（BORTAS）项目提供了有关生物质燃烧排放成分与分布、排放中的臭氧生成与消耗，以及由此引起对流层氧化剂化学成分扰动的联系信息。BORTAS团队于2011年夏季利用设施空中大气测量（FAAM）BAe-146飞机对北大西洋的生物质燃烧排放进行了采样。这些数据随后被用于描述羽流中的观测化学成分，并利用嵌套的3-D化学传输模型量化北极火灾对北大西洋区域的影响。该数据集包含大气飞机和模型数据。

BORTAS项目的科学目标如下：
- 利用FAAM BAe146飞机在2011年夏季对北美洲北极地区在大西洋西部边界上的生物质燃烧排放进行采样；
- 通过测量数据来约束主化学机制（MCM），特别关注NOy和有机化学，以描述羽流中的观测化学成分；
- 推导出适用于全球化学传输模型（CTM）的简化化学机制，该机制能够准确描述羽流中的化学成分；
- 利用MCM化学子集和同化的现场测量数据，通过嵌套的3-D化学传输模型量化北极森林火灾对温带和亚热带大西洋氧化剂化学的影响；
- 利用空间传感器数据检测、验证和量化北极生物质燃烧对全球对流层成分的影响。

BORTAS项目中的FAAM空中采样元素于2011年7月和8月进行。