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GCOS, 240. The Global Climate Observing System 2021: The GCOS Status Report
World Meteorological Organization (WMO) ; United Nations Educational, Scientific and Cultural Organization (UNESCO); Intergovernmental Oceanographic Commission (IOC); et al. - WMO, 2021
GCOS, 239. حالة النظام العالمي لرصد المناخ لعام 2021 : ملخص تنفيذي
World Meteorological Organization (WMO) ; United Nations Educational, Scientific and Cultural Organization (UNESCO); Intergovernmental Oceanographic Commission (IOC); et al. - WMO, 2021
GCOS, 239. 全球气候观测系统现状报告（2021）: 执行摘要
World Meteorological Organization (WMO) ; United Nations Educational, Scientific and Cultural Organization (UNESCO); Intergovernmental Oceanographic Commission (IOC); et al. - WMO, 2021
GCOS, 239. The Global Climate Observing System 2021: Executive Summary
World Meteorological Organization (WMO) ; United Nations Educational, Scientific and Cultural Organization (UNESCO); Intergovernmental Oceanographic Commission (IOC); et al. - WMO, 2021
GAW Report, 267/Research Infrastructure Quality Assurance. Fifth International Comparison of Dobson Spectrophotometers Villa Ortúzar Observatory, Argentina, 4-22 March 2019
World Meteorological Organization (WMO) ; Glen McConville, Koji Miyagawa, and Gerardo Carbajal Benítez - WMO, 2021This report describes the Fifth Intercomparison of Dobson Spectophotometers (IC/BUA-19) carried out at the Main Buenos Aires Observatory (Villa Ortúzar) of the Servicio Meteorológico Nacional (Argentina) (SMN) from 4 March to 22 March 2019. The Dobson spectrophotometer D065 was used as a reference for comparison of measured ozone column values and to calibrate individual instruments. The Regional Standard (R-III) also participated in the event and was calibrated. Through this activity, the data obtained by individual Dobson Spectrophotometers at different measurement sites will be standardized ...
Sea-ice Information and Services
This document contains a summarized history of sea-ice information services, as well as a description of the various types of sea ice, the ice observing methods currently being used, and the types of ice information services currently being provided. The sea-ice information services of 17 countries according to region, including information about organization, data acquisition, products and forecasts, publications and contact details, will be available soon on the WMO community website.
Systematic Observations Financing Facility (SOFF): Second Funders’ Forum
This report intends to provide the basis for discussion at the Second Funders' Forum, with particular focus on: the value proposition of the Systematic Observations Financing Facility (SOFF), the proposed institutional and operational design and respective arrangements of the Facility.
Systematic Observations Financing Facility (SOFF): First Funders’ Forum
This document provides the basis for discussions at the first forum for potential funders of the Systematic Observations Financing Facility (SOFF), virtually taking place on 24 March 2021. The objective of the first forum is to present to potential funders the rationale for the establishment of SOFF; to present the current approach to the institutional design of SOFF; to summarize the process, timeline and status of preparations; to identify participants’ questions that have to be addressed; and to present the expectations for the subsequent meetings. Two additional potential Funders’ Forums a ...
Report on the Unexpected Emissions of CFC-11 (WMO-No. 1268)
The Report was written by the Scientific Assessment Panel to the Montreal Protocol on Substances that Deplete the Ozone Layer. CFC-11 (CCl3F) was reportedly fully controlled under the Montreal Protocol since 2010. However, a 2018 scientific paper revealed that instead of decreasing, CFC-11 emissions were increasing. In reaction, the Protocol parties agreed to Decision XXX/3: Unexpected emissions of trichlorofluoromethane (CFC-11). This Report addresses: current and past observations of CFC-11 atmospheric abundances; information on the CFC-11 global and regional emission increase and subsequent ...
GAW Report, 266. System and Performance Audit of Surface Ozone, Carbon Monoxide, Methane, Carbon Dioxide and Nitrous Oxide at the Global GAW Station Zugspitze-Schneefernerhaus Germany, September 2020
World Meteorological Organization (WMO) ; C. Zellweger, M. Steinbacher, B. Buchmann, R. Steinbrecher - WMO, 2021The 6th system and performance audit by WCC-Empa at the global GAW station Zugspitze-Schneefernerhaus (ZSF) was conducted from 8 - 9 September 2020 in agreement with the WMO/GAW quality assurance system. This report summarises the assessment of the Zugspitze-Schneefernerhaus GAW station in general, as well as the surface ozone, methane, carbon dioxide, carbon monoxide and nitrous oxide measurements in particular. The recommendations found in this report are graded as minor, important and critical and are complemented by a priority indication and a suggested completion date.
GAW Report, 263. Report of the Fifth Methane Reference Gas Inter-comparison Experiment for Japan from 2018 to 2019
World Meteorological Organization (WMO) ; Japan Meteorological Agency (JMA); Teruo Kawasaki, Atsuya Kinoshita, Yousuke Sawa, Akihiko Murata, Shinji Morimoto, Shohei Murayama, Toshinobu Machida, Motoki Sasakawa, Kazuhiro Tsuboi - WMO, 2021The WCC-JMA organized six rounds of the CH4 reference gas inter-comparison experiments from 2001 to 2019 to quantify differences among CH4 standard scales implemented at each participating laboratory as well as to monitor the long-term stability of standard gases in Asia and the South-West Pacific. In the 5th round inter-comparison for Japan, two reference gas cylinders were circulated in turn to JMA, JAMSTEC, TU, AIST, NIES, MRI, and JMA from September 2018 to April 2019. The measurement results of JAMSTEC and WCC-JMA have shown a good agreement with differences of less than 0.4 ppb for two ...
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