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Atmospheric Research and Environment Programme (AREP) |
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GAW Report, 280. Fifth WMO Filter Radiometer Comparison (FRC-V) 27 September to 25 October 2021 Davos, Switzerland (GAW 280)
World Meteorological Organization (WMO) ; Stelios Kazadzis, Natalia Kouremeti, Julian Gröbner - WMO, 2023The Fifth Filter Radiometer Comparison (FRC-V) was held with one year of delay due to COVID-19 pandemic and relative restrictions, concurrently with the 13th International Pyrheliometer Comparison in Davos, Switzerland. Instrumentation belonging to different AOD global networks were invited and participated. Also, three reference instruments from the Calibration of Aerosol Remote Sensing (CARS) of the pan-European research infrastructure ACTRIS (Aerosol, Clouds and Trace Gases Research Infrastructure) facility participated. The comparison took place at the premises of PMOD/WRC from September 2 ...
GAW Report, 276. Izaña Atmospheric Research Center : Activity Report 2019-2020
The Izaña Atmospheric Research Center (IARC), which is part of the State Meteorological Agency of Spain (AEMET), represents a centre of excellence in atmospheric science. It manages four observatories in Tenerife, including the high altitude Izaña Observatory, which was inaugurated in 1916 and has since carried out uninterrupted meteorological and climatological observations and become a WMO Centennial Station.
This report summarizes the many activities of the Izaña Atmospheric Research Center.
GAW Report, 273. Seventh Session of the Research Board Environmental Pollution and Atmospheric Chemistry Scientific Steering Committee
World Meteorological Organization (WMO) ; Seventh session report of the Research Board Environmental Pollution and Atmospheric Chemistry Scientific Steering Committee (8–11 February 2021, Geneva, Switzerland) - WMO, 2022
GAW Report, 257. Fourteenth Intercomparison Campaign of the Regional Brewer Calibration Centre Europe
World Meteorological Organization (WMO) ; Agencia Estatal de Meteorología (AEMET); Fourteenth Intercomparison Campaign of the Regional Brewer Calibration Centre Europe (El Arenosillo Atmospheric Sounding Station, Huelva, Spain, 17–28 June 2019) - WMO, 2021XIV Regional intercomparison of the Brewer Calibration Center for Europe (RBCC-E) was held at El Arenosillo Atmospheric Sounding Station of the “Instituto Nacional de Técnica Aeroespacial” (INTA) during the period 17 – 28 of June, 2019. 21 Brewer spectrometers, 15 operators and experts from 11 countries took part in XIV Regional intercomparison campaign. The campaign was organized in collaboration with the “Area of Instrumentation and Atmospheric Research” of INTA, with the support of the Global Atmospheric Watch (GAW) program of the World Meteorological Organization (WMO). The Brewer travelli ...
ORM11 GAW 271, 271. Report of Part II of the Eleventh Meeting of the Ozone Research Managers of the Parties to the Vienna Convention for the Protection of the Ozone Layer (Online Meeting, 19-23 July 2021)
World Meteorological Organization (WMO) ; United Nations Environment Programme (UNEP); Part II of the Eleventh Meeting of the Ozone Research Managers of the Parties to the Vienna Convention for the Protection of the Ozone Layer (Online Meeting, 19-23 July 2021) - 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 ...
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 ...
GAW Report, 265. System and Performance audit for Non-Methane Volatile Organic Compounds at the Global GAW Station Cape Verde, December 2019
A system and performance audit for VOCs was conducted at the Cabo Verde Atmospheric Observatory (CVO) (co-organised by the Chemistry Department, University of York and by the World Calibration Centre for VOC, WCC-VOC). The audit was conducted from November 27th to December 2nd in year 2019. The observatory is operated as a global GAW station and analyses on-line air samples directly collected at the station towers. The audit was conducted according to the existing WMO/GAW guidelines and SOPs for audits . The audit directly involved the responsible site research scientist and the station manage ...
GAW Report, 264. Report of the Sixth Methane Reference Gas Inter-comparison Experiment for Asia from 2018 to 2019
World Meteorological Organization (WMO) ; Teruo Kawasaki, Atsuya Kinoshita, Yousuke Sawa, Shuangxi Fang, Haeyoung Lee, Yogesh K. Tiwari - 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 6th round robin inter-comparison for Asia, two reference gas cylinders were circulated in turn to JMA, CMA, KMA/NIMS, IITM, and JMA from January 2018 to September 2019. The inter-comparison results confirmed that the differences between each laboratory and WCC-JMA were within the GAW networ ...
Bulletin de l’OMM sur les aérosols N°4 - Avril 2021 : Aérosols issus de la combustion de la biomasse
GAW Report, 261. Sixth Session of the CAS Environmental Pollution and Atmospheric Chemistry Scientific Steering Committee
World Meteorological Organization (WMO) ; CAS Environmental Pollution and Atmospheric Chemistry Scientific Steering Committee, Sixth session (11-14 November 2019; Geneva, Switzerland) - WMO, 2020
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GAW Report, 248. Decimosegunda campaña de intercomparación del Centro Regional de Calibración Brewer para Europa
Agencia Estatal de Meteorología (AEMET); Estación de Sondeos Atmosféricos de El Arenosillo, Huelva (España) 29 de mayo a 9 de junio de 2017 - 2020
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GAW Report, 246. Decimotercera campaña de intercomparación del Centro Regional de Calibración Brewer para Europa
Agencia Estatal de Meteorología (AEMET); Observatorio Atmosférico de Arosa (Suiza) 30 de julio a 10 de agosto de 2018 - 2020
GAW Report, 253/Research Infrastructure Quality Assurance. International Comparison of Dobson Spectrophotometers
World Meteorological Organization (WMO) ; International Comparison of Dobson Spectrophotometers, Pretoria, Gauteng Province, South Africa, 7-18 October 2019 - WMO, 2020
GAW Report, 250. Global Atmosphere Watch Expert Meeting on Measurement-Model Fusion for Global Total Atmospheric Deposition (MMF-GTAD)
World Meteorological Organization (WMO) ; Global Atmosphere Watch Expert Meeting on Measurement-Model Fusion for Global Total Atmospheric Deposition (MMF-GTAD) (26-27 February 2019; Geneva, Switzerland) - WMO, 2020
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GAW Report, 248. Twelfth Intercomparison Campaign of the Regional Brewer Calibration Center Europe
XII Regional intercomparison of the Brewer Calibration Center for Europe (RBCC-E) was held at El Arenosillo Atmospheric Sounding Station of the “Instituto Nacional de Técnica Aeroespacial” (INTA) during the period 29 of May to – 7 of June, 2019. 20 Brewer spectrometers, 15 operators and experts from 9 countries took part in XII Regional intercomparison campaign. This campaign is part of the EUBREWNET ES1207 COST Action and is organized in collaboration with the “Area of Instrumentation and Atmospheric Research Area” of INTA, with the support of the Global Atmospheric Watch (GAW) program of th ...
GAW Report, 247. Izaña Atmospheric Research Center : Activity Report 2017-2018
The Izaña Atmospheric Research Center (IARC), which is part of the State Meteorological Agency of Spain (AEMET), represents a centre of excellence in atmospheric science. It manages four observatories in Tenerife, including the high altitude Izaña Observatory, which was inaugurated in 1916 and has since carried out uninterrupted meteorological and climatological observations and become a WMO Centennial Station.
This report summarizes the many activities of the Izaña Atmospheric Research Center.
GAW Report, 243. Report of the Fifth Erythemal UV Radiometers Intercomparison
This report presents the background information, procedures and results of the intercomparison of erythemal UV sensors carried out at the Central Observatory of Buenos Aires (OCBA) in 2018 against reference radiometers calibrated at the World Radiation Center (PMOD/WRC) in Davos during 2017. In this way, the data obtained at the measurement sites will be standardized and will be comparable locally and globally. Twenty sensors were calibrated, belonging to Argentine monitoring and research institutions. The associated relative uncertainty of each sensor was also estimated.
GAW Report, 242. 19th WMO/IAEA Meeting on Carbon Dioxide, Other Greenhouse Gases and Related Measurement Techniques (GGMT-2017)
The meeting reviewed current WMO data quality objectives, reference scales and observation strategies, including calibration, quality control, data management and archiving. Target species were carbon dioxide and other greenhouse gases, stable isotopes, and radiocarbon in greenhouse gas measurements. The workshop discussed in detail the harmonization and quality control of isotope measurements, the extension of the measurement network towards more polluted and urban areas, the use of low-cost sensors, and the collaboration of the scientific greenhouse gas and carbon cycle community with the me ...
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