國(guó)際計(jì)量局（BIPM）化學(xué)部主任



報(bào)告題目：Certified Reference Materials for a Global Greenhouse Gas Monitoring Infrastructure 
報(bào)告摘要

Understanding sources and sinks of Greenhouse Gases (GHG) and the impact of policies to mitigate emissions provides a key tool for action against Climate Change. GHG emissions and uptake can be determined through measurement systems that include in situ measurement of GHG concentration at varying levels of spatial distribution. These measurements together with wind-speed measurements and numerical weather prediction and dispersion models can be used to determine spatially and time resolved GHG emissions and sinks. Maintaining a global system of such measurements, as envisaged, for example, by the WMO initiative on a coordinated global Greenhouse Gas Monitoring Infrastructure, requires close attention to quality assurance and equivalence of measurements from different sites.  Significant emissions may lead to small changes in GHG concentration, requiring highly consistent calibration standards at different measurement sites. The presentation will cover the establishment and characterization of CO2 in air standards for the measurements of concentration as well as isotope ratio, for source apportionment, that are required in GHG measurement networks. Generating the highest precision measurements of CO2 in air requires adopting metrological traceability to defined sets of primary standards, the so-called scale approach. The conversion of CO2 in air amount fraction values from one scale to another requires the scale relationships to be well known, noting that the requirement for internal consistency of standards within a scale, such as the WMO-CO2-X2019 scale, is at the 0.01 μmol/mol level, and consistency between different scales should not exceed the 0.02 μmol/mol level [1].  Certified reference materials that are needed to calibrate both in-situ based optical/laser based GHG amount faction and isotope ratio measurements as well as mass spectrometric laboratory-based measurements of isotope ratio will be described, as well as on-going comparisons to verify their equivalence. These comparisons are supporting National

個(gè)人簡(jiǎn)介

Robert Wielgosz博士是位于法國(guó)的國(guó)際計(jì)量局（BIPM）化學(xué)部的主任，其氣體計(jì)量實(shí)驗(yàn)室負(fù)責(zé)組織空氣質(zhì)量和溫室氣體標(biāo)準(zhǔn)國(guó)際比對(duì)。這些比對(duì)為由國(guó)家計(jì)量院（NMIs）和指定機(jī)構(gòu)（DIs）組成的世全球大氣監(jiān)測(cè)網(wǎng)絡(luò)提供標(biāo)準(zhǔn)支撐。他是國(guó)際計(jì)量委員會(huì)（CIPM）氣候變化和環(huán)境領(lǐng)域任務(wù)組成員，也是國(guó)際計(jì)量局-世界氣象組織（WMO）“氣候行動(dòng)中的計(jì)量”研討會(huì)指導(dǎo)委員會(huì)主席。他發(fā)表測(cè)量科學(xué)相關(guān)論文60余篇，包括世界氣象組織大氣氣體成分測(cè)量指南。他擁有劍橋大學(xué)伊曼紐爾學(xué)院（英國(guó)）的自然科學(xué)碩士學(xué)位，巴斯大學(xué)（英國(guó)）的博士學(xué)位，并在烏爾姆大學(xué)（德國(guó)）完成了皇家學(xué)會(huì)歐洲交流研究。