GAW Reports
GAW Reports



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GAW Report, 249. Report of the Fifth Session of the CAS Environmental Pollution and Atmospheric Chemistry Scientific Steering Committee
Report of the Fifth Session of the CAS Environmental Pollution and Atmospheric Chemistry Scientific Steering Committee
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Published by: WMO ; 2020
Collection(s) and Series: GAW Report- No. 249
Language(s): English
Format: Digital (Free)Tags: Atmospheric chemistry ; Pollution ; Global Atmosphere Watch Programme (GAW)
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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 ...
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Available online: https://doi.org/10.31978/666-20-019-9
World Meteorological Organization (WMO) ; Agencia Estatal de Meteorología (España)
Published by: WMO, AEMET ; 2019XII 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 the World Meteorological Organization (WMO). This campaign will be used as demonstration campaign of the calibration methodologies and error assessment developed by the EMRP ATMOZ project (Traceability of Atmospheric Total Ozone).The action focuses on the calibration of Brewer spectrophotometers from Europe and North Africa. The RBCC-E will provide ozone and Aerosol Optical Depth (AOD) calibration against the RBCC-E reference, whereas the QASUME unit of the Physikalisch-Meteorologisches Observatorium Davos / World Radiation Center (PMOD /WRC) will provide a global UV reference spectrum for the ultraviolet measurements.
The initial Brewer comparison results (using the instruments’ original calibration constants) indicate that the overall agreement is slightly lower than in the previous campaign; during this campaign 44% of the instruments present an ozone deviation lower than 1% with respect to the reference. On this campaign 72% of the instruments agree on the 2% range whereas in previous campaigns around 75% of the instruments reached this agreement. After the maintenance tasks, performed by International Ozone Services Inc. (IOS), using the new determined calibration constant and the stray light correction applied to single monochromator Brewers, the agreement with respect to the reference was very good:+/- 0.5%.Collection(s) and Series: GAW Report- No. 248
Language(s): English
Format: Digital (Free)Tags: Atmosphere ; Global Atmosphere Watch Programme (GAW)
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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.World Meteorological Organization (WMO) ; Agencia Estatal de Meteorología (España)
Published by: WMO, AEMET ; 2019The 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.Collection(s) and Series: GAW Report- No. 247
Language(s): English
Format: Digital (Free)Tags: Atmosphere ; Global Atmosphere Watch Programme (GAW)
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GAW Report, 246. Thirteenth Intercomparison Campaign of the Regional Brewer Calibration Center Europe
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Available online: https://doi.org/10.31978/666-20-018-3
Published by: WMO ; 2019
Collection(s) and Series: GAW Report- No. 246
Language(s): English; Other Languages: Spanish
Format: Digital (Free)Tags: Global Atmosphere Watch Programme (GAW)
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GAW Report, 244. Report of the 2017 Global Atmosphere Watch Symposium and Fourth Session of the CAS Environmental Pollution and Atmospheric Chemistry Scientific Steering Committee (EPAC SSC)
Report of the 2017 Global Atmosphere Watch Symposium and Fourth Session of the CAS Environmental Pollution and Atmospheric Chemistry Scientific Steering Committee (EPAC SSC)
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Published by: WMO ; 2019
Collection(s) and Series: GAW Report- No. 244
Language(s): English
Format: Digital (Free)Tags: Environment and landscape ; Air pollution ; Atmospheric chemistry ; Global Atmosphere Watch Programme (GAW)
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GESAMP - Reports and Studies, 97. The magnitude and impacts of anthropogenic atmospheric nitrogen inputs to the ocean
World Meteorological Organization (WMO) ; Food and Agriculture Organization (FAO); United Nations Educational, Scientific and Cultural Organization (UNESCO); et al. - WMO, 2018The present global modelling study of the Nr atmospheric cycle and Nr deposition to the ocean is the first that evaluates past, present and future Nr atmospheric deposition accounting for ON primary sources as well as for secondary ON chemical formation as a N-dependent process. While the total Nr deposition to the ocean is not expected to change significantly by 2050, the relative importance of oxidized and reduced N is expected to change, with an increasing proportion of ammonium compared to nitrate, resulting from more efficient controls on terrestrial emissions of nitrogen oxides (NOx) com ...PermalinkPermalink![]()
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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.Permalink![]()
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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 ...Permalink![]()
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GAW Report, 241. SPARC/IO3C/GAW Report on Long-term Ozone Trends and Uncertainties in the Stratosphere
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GAW Report, 240. Report of the Second International UV Filter Radiometer Calibration Campaign UVC-II
The objective of the campaign was to provide a calibration traceable to the WCC-UV reference for all participating radiometers, in view of homogenizing UV measurements in all participating countries.Permalink![]()
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GAW Report, 239. Calibration Methods of GC-μECD for Atmospheric SF6 Measurements
SF6 is a substance which originates only from anthropogenic sources used primarily in the electricity and electronics supply industries, e.g. the semiconductor industry, where it is used as an electronic insulator due to its inertness. SF6 is a trace gas that exists in small quantities at the level of ppt (parts-per-trillion, 1/1012) in the atmosphere, but its global warming potential is 23,500 times greater than that of CO2 when compared over a 100-year period[1]. In particular, SF6 has an atmospheric lifetime of 3,200 years upon emission, and will eventually exacerbate the man-made greenhous ...Permalink![]()
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GAW Report, 235. Vegetation Fire and Smoke Pollution Warning and Advisory System (VFSP-WAS): Concept Note and Expert Recommendations
World Meteorological Organization (WMO) ; IBBI ; The Global Fire Monitoring Center (GFMC) - WMO, 2018This concept note contains the expert recommendations resulting from discussions at the international workshop on Forecasting Emissions from Vegetation Fires and their Impacts on Human Health and Security in South-East Asia, which was hosted by the Indonesian Agency for Meteorology, Climatology and Geophysics (BMKG), Jakarta, from 29 August to 1 September 2016. The workshop was organized by the World Meteorological Organization (WMO) and the Interdisciplinary Biomass Burning Initiative (IBBI) in collaboration with the United Nations Office for Disaster Reduction/International Wildfire Prepared ...Permalink![]()
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GAW Report, 233. Report of the Third Session of the CAS Environmental Pollution and Atmospheric Chemistry Scientific Steering Committee (EPAC SSC)
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