ALICE - Airborne tool for methane isotopic composition and polar meteorological experiments

ALICE - 用于甲烷同位素组成和极地气象实验的机载工具

基本信息

批准号：
275016472
负责人：
Professorin Dr. Astrid Lampert
金额：
--
依托单位：
Institut für Flugführung
依托单位国家：
德国
项目类别：
Infrastructure Priority Programmes
财政年份：
2015
资助国家：
德国
起止时间：
2014-12-31 至 2018-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/275016472?language=en
关键词：
ALICE Airborne tool methane isotopic

项目摘要

The goals of the project ALICE are - the realization of a quadrocopter with meteorological payload and an air probing system- the deployment of the system above sea ice and ocean water near a coastal Antarctic research station in winter- the investigation of the small-scale structure and variability of the atmospheric boundary layer, and the origin of polar methane emissions by analysis of methane isotopesDuring the first project year, the concept of the quadrocopter with meteorological and air sampling payload will be realized, tested and qualified for deployment in the harsh Antarctic conditions, and undergo extensive testing concerning the handling of the airborne system and the treatment of the air samples from evacuation of the glass bottles to the final analysis with a mass spectrometer in the laboratory. A typical flight pattern includes the ascent up to an altitude of 1000 m, observing the parameters temperature and humidity, as well as the surface temperature, with the real-time data downlink, and then deciding the altitudes for taking air probes at various altitudes close to the surface, near the inversion, and above the inversion during the descent.During the second project year, the atmospheric boundary layer will be investigated with frequent ascents from a coastal Antarctic station (possibly the Chilean Base Presidente Eduardo Frei Montalva, the Japanese base Syowa or the British base Halley) in austral winter (April to September), when an enhanced methane concentration is expected in the South Polar Ocean based on satellite-derived data. Parallel to the atmospheric observations and the air sampling, the atmospheric and oceanic methane concentration is monitored by international collaboration partners, and probes of ocean water and sea ice are sampled for analysis concerning methane isotopes in the laboratory. The high resolution data are quality checked and embedded in the context of the local meteorological measurements and especially the radiosonde data.During the third project year, the obtained meteorological data set is analysed. The interdisciplinary evaluation contributes to the understanding of the interactions of ocean, sea ice and atmosphere, especially the methane cycle in the polar regions. The high-resolution profiles provide information about the atmospheric stratification and small-scale spatial and temporal variability under different synoptic-scale and sea ice conditions. The data will be used for the validation of an atmospheric model which is designed for investigating small-scale processes near a coastal polynya. The data interpretation will be performed in close cooperation with the partners in an interdisciplinary approach to link the observed atmospheric properties to the biogeochemical methane cycle, to determine the origin of the enhanced methane concentration via isotopic analyses. The meteorological data will serve to provide a validation tool for remote sensing methane observations.

The goals of the project ALICE are - the realization of a quadrocopter with meteorological payload and an air probing system- the deployment of the system above sea ice and ocean water near a coastal Antarctic research station in winter- the investigation of the small-scale structure and variability of the atmospheric boundary layer, and the origin of polar methane emissions by analysis of methane isotopesDuring the first project year, the concept of the quadrocopter with在恶劣的南极条件下，将实现，测试和资格进行气象和空气采样有效载荷，并有资格在南极条件下进行部署，并经过有关处理机载系统的处理以及从实验室中质谱仪的最终分析的空气样品处理的广泛测试。典型的飞行模式包括升高至1000 m的升高，观察参数的温度和湿度以及表面温度，以及实时数据下链接，然后决定在靠近倒置的境内，在沿海的境内，在近乎境内的境内，在近乎境外的境内，在靠近地面的各种高度上进行空气探头的高度。车站（可能是智利基地总裁Eduardo Frei Montalva，日本基地Syowa或英国基地Halley）在澳大利亚冬季（4月至9月），那时，基于卫星来源的数据，预计南极海洋的甲烷浓度将增强。与大气观测和空气采样平行，大气和海洋甲烷浓度由国际协作伙伴监测，海水和海冰的探针进行了对实验室中甲烷同位素的分析。高分辨率数据是在局部气象测量值（尤其是辐射数据数据的背景下）检查和嵌入的质量。在第三个项目年份中，分析了所获得的气象数据集。跨学科评估有助于理解海洋，海冰和大气的相互作用，尤其是极地地区的甲烷周期。高分辨率曲线提供了有关在不同的天气尺度和海冰条件下的大气分层以及小规模的空间和时间变化的信息。该数据将用于验证大气模型，该模型旨在研究沿海Polynya附近的小规模过程。数据解释将在跨学科的方法中与伴侣密切合作，以将观察到的大气特性与生物地球化学甲烷循环联系起来，以通过同位素分析来确定增强的甲烷浓度的起源。气象数据将有助于为遥感甲烷观测提供验证工具。