An international consortium promoting iDirac VOC developments

异戊二烯和其他挥发性有机化合物（VOC）的大气测量在世界大部分地区都是有限的。这是因为几乎没有什么仪器是鲁棒的，可以在现实世界的条件下自主运行，并且成本相当低。其中一种仪器是iDirac，由NERC资助开发，旨在满足这些标准并测量异戊二烯。在这个项目中，我们将建立一个国际研究科学家网络，致力于扩大在采样不足地区对异戊二烯和单萜的长期观测，并开发创新的低成本替代品，通量和大气反应性测量。这些发展将大大提高我们对生物物种的通量以及这些物种和许多其他痕量物种从大气中氧化去除的理解。合作伙伴是Alex Guenther（美国加州大学欧文分校），袁斌（中国暨南大学）和Kerneels Jaars（SAEON，RSA），他们提供了一套独特的专业知识和设施。该小组将在三个主要专题上开展合作：（i）改进仪器设计，以提高性能，便于建造和部署;（ii）试行新的用途（扩大所测量物种的范围，在新的采样不足的地点部署，并将其纳入新的系统和新的应用）;（iii）确定开发和部署的新机会。这将通过在线协作、交流专门知识和人员以及使用测量设施等多种方式来实现。最终目标是启动一个国际小组，共同研究iDirac相关的发展，大致类似于用于自然界气体和气溶胶排放模型（MEGAN）的基层大学方法。

Atmospheric measurements of isoprene and other volatile organic compounds (VOC) are limited in much of the world. This stems from having few instruments which are robust, can be run autonomously in real-world conditions, and are reasonably low cost. One such instrument is the iDirac, developed with NERC funding, which was designed to meet these criteria and to measure isoprene. In this project, we will establish an international network of research scientists who are committed to expanding the available longer-term observations of isoprene and monoterpenes in undersampled regions and to developing innovative lower-cost alternatives, flux and atmospheric reactivity measurements. Such developments would greatly enhance our understanding of the fluxes of biogenic species and of the oxidative removal of these and many other trace species from the atmosphere. The partners are Alex Guenther (UC Irvine, USA), Yuan Bin (Jinan University, PRC), and Kerneels Jaars (SAEON, RSA) who contribute a unique set of expertise and facilities. The group will work together on three main topics: (i) improving the instrument design for better performance and ease of construction and deployment; (ii) piloting new uses (extending the range of species measured, deploying in new, under-sampled locations, and integrating it into new systems novel applications); (iii) identifying new opportunities for development and deployment. This will be achieved through a mix of on-line collaboration, exchange of expertise and personnel, and use of measurement facilities. The ultimate objective is to kickstart an international group working collegiately on iDirac-related developments, loosely analogous to the grass-roots, collegiate approach used for the Model of Emissions of Gases and Aerosols from Nature (MEGAN).