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atmospheric chemical composition and variability have been studied extensively. However, this is not the case for the Pyrenees. Few measurement campaigns have been carried out, with the aim of documenting the influence of meteorological conditions on the atmospheric composition at the Pic du Midi (PDM) observatory: Atmospheric Pollution in the Pyrenees (PAP; Ezcurra et al. 2013 ), Pic 2005 ( Gheusi et al. 2011 ), and Pic 2010 ( Gheusi et al. 2016 ). Ezcurra et al. (2013) present experimental data from
atmospheric chemical composition and variability have been studied extensively. However, this is not the case for the Pyrenees. Few measurement campaigns have been carried out, with the aim of documenting the influence of meteorological conditions on the atmospheric composition at the Pic du Midi (PDM) observatory: Atmospheric Pollution in the Pyrenees (PAP; Ezcurra et al. 2013 ), Pic 2005 ( Gheusi et al. 2011 ), and Pic 2010 ( Gheusi et al. 2016 ). Ezcurra et al. (2013) present experimental data from
2022 NOAA UV–Vis–NIR Workshop What : Stakeholders and end users with diverse backgrounds in atmospheric science gathered to provide the state of the science and user needs for operational atmospheric composition measurements to inform future NOAA low-Earth-orbit satellite missions. When : 14–15 June 2022 Where : Online The U.S. National Oceanic and Atmospheric Administration (NOAA) has a long history of satellite observations, including for atmospheric composition
2022 NOAA UV–Vis–NIR Workshop What : Stakeholders and end users with diverse backgrounds in atmospheric science gathered to provide the state of the science and user needs for operational atmospheric composition measurements to inform future NOAA low-Earth-orbit satellite missions. When : 14–15 June 2022 Where : Online The U.S. National Oceanic and Atmospheric Administration (NOAA) has a long history of satellite observations, including for atmospheric composition
NOWMBE~ 1968 P. B. HAYS AND R. G. ROBLE 1141Stellar Spectra and Atmospheric Composition P. B. HAYS AND R. G. ROBLEDept. of Aerospace t~ngineering, University of Michigan, Ann Arbor(Manuscript received 16 January 1968, in revised form 22 July 1968)ABSTRACT The distortions to the image and spectrum of a star being observed during occultation from a satellite arediscussed. The primary distortions are
NOWMBE~ 1968 P. B. HAYS AND R. G. ROBLE 1141Stellar Spectra and Atmospheric Composition P. B. HAYS AND R. G. ROBLEDept. of Aerospace t~ngineering, University of Michigan, Ann Arbor(Manuscript received 16 January 1968, in revised form 22 July 1968)ABSTRACT The distortions to the image and spectrum of a star being observed during occultation from a satellite arediscussed. The primary distortions are
at a time where coincident profile observations of atmospheric temperature and composition were extremely rare. Recent work has demonstrated that other stability metrics may perform similarly to the LRT, but their potential use and applicability to a wide variety of environments and dynamic scenarios must be further investigated ( Maddox and Mullendore 2018 ). Recognition of this fact and motivated by both the increasing availability of long-term, globally distributed profiles of observed
at a time where coincident profile observations of atmospheric temperature and composition were extremely rare. Recent work has demonstrated that other stability metrics may perform similarly to the LRT, but their potential use and applicability to a wide variety of environments and dynamic scenarios must be further investigated ( Maddox and Mullendore 2018 ). Recognition of this fact and motivated by both the increasing availability of long-term, globally distributed profiles of observed
The NASA Atmospheric Tomography (ATom) mission was a global-scale airborne campaign, flying over four seasons from August 2016 to May 2018, and funded through the NASA Earth Venture Suborbital-2 (EVS-2) program. ATom addresses gaps in our understanding of chemical composition, reactivity, and transport in the remote troposphere. Observations collected during ATom provide unique information to test and improve global chemistry–transport and chemistry–climate models (CTMs, CCMs) and to test and
The NASA Atmospheric Tomography (ATom) mission was a global-scale airborne campaign, flying over four seasons from August 2016 to May 2018, and funded through the NASA Earth Venture Suborbital-2 (EVS-2) program. ATom addresses gaps in our understanding of chemical composition, reactivity, and transport in the remote troposphere. Observations collected during ATom provide unique information to test and improve global chemistry–transport and chemistry–climate models (CTMs, CCMs) and to test and
High-quality global atmospheric composition observations are needed to support health assessments, document trends in greenhouse gas and criteria air pollutant emissions, monitor compliance with conventions and protocols, and underpin new policy measures for climate mitigation and adaptation. Forecasting air quality, sand and dust storms, volcanic ash, and biomass smoke plumes are examples of expanding operational services that require atmospheric composition observations alongside
High-quality global atmospheric composition observations are needed to support health assessments, document trends in greenhouse gas and criteria air pollutant emissions, monitor compliance with conventions and protocols, and underpin new policy measures for climate mitigation and adaptation. Forecasting air quality, sand and dust storms, volcanic ash, and biomass smoke plumes are examples of expanding operational services that require atmospheric composition observations alongside
Regulations to limit the spread of the COVID-19 pandemic led to substantial changes in human life, industrial productivity, and mobility, which caused reductions in emissions from industry and ground and airborne transportation ( Venter et al. 2020 ). Hence, the lockdown period offered the unique opportunity to directly measure the effects of reduced pollution emissions on atmospheric composition and thereby challenge our understanding of the anthropogenically perturbed chemical and physical
Regulations to limit the spread of the COVID-19 pandemic led to substantial changes in human life, industrial productivity, and mobility, which caused reductions in emissions from industry and ground and airborne transportation ( Venter et al. 2020 ). Hence, the lockdown period offered the unique opportunity to directly measure the effects of reduced pollution emissions on atmospheric composition and thereby challenge our understanding of the anthropogenically perturbed chemical and physical
European-scale data and information related to air pollution and health, solar energy, GHG, and the impacts of changing atmospheric composition on climate. It builds on a successful uninterrupted series of collaborative research and innovation projects, which started in 2005 with GEMS ( Hollingsworth et al. 2008 ) and followed with MACC, MACC-II, and MACC-III ( Peuch et al. 2016b , 2014 , 2016a ), as well as extensive user and stakeholder engagement for defining the scope and initial portfolio of the
European-scale data and information related to air pollution and health, solar energy, GHG, and the impacts of changing atmospheric composition on climate. It builds on a successful uninterrupted series of collaborative research and innovation projects, which started in 2005 with GEMS ( Hollingsworth et al. 2008 ) and followed with MACC, MACC-II, and MACC-III ( Peuch et al. 2016b , 2014 , 2016a ), as well as extensive user and stakeholder engagement for defining the scope and initial portfolio of the
1. Introduction An accurate quantification of the effects of anthropogenic emissions on the ozone layer is a key step toward making accurate predictions of the future ozone evolution. Assessing the ozone response to anthropogenic forcings is also a step toward improved understanding of the coupling between atmospheric composition and climate ( Isaksen et al. 2009 ). There is robust modeling evidence suggesting that anthropogenic greenhouse gases (GHGs), via their influences on stratospheric
1. Introduction An accurate quantification of the effects of anthropogenic emissions on the ozone layer is a key step toward making accurate predictions of the future ozone evolution. Assessing the ozone response to anthropogenic forcings is also a step toward improved understanding of the coupling between atmospheric composition and climate ( Isaksen et al. 2009 ). There is robust modeling evidence suggesting that anthropogenic greenhouse gases (GHGs), via their influences on stratospheric
cooling path with prescribed initial evaporation and condensation conditions. Such models have been used to assess the impact of equilibrium and kinetic fractionation processes on the snowfall isotopic composition ( Merlivat and Jouzel 1979 ; Jouzel and Merlivat 1984 ). The second-order isotopic parameter deuterium excess d = δ D − 8 × δ 18 O ( Dansgaard 1964 ) is expected to be highly sensitive to kinetic effects occurring either during evaporation at the ocean surface or during atmospheric
cooling path with prescribed initial evaporation and condensation conditions. Such models have been used to assess the impact of equilibrium and kinetic fractionation processes on the snowfall isotopic composition ( Merlivat and Jouzel 1979 ; Jouzel and Merlivat 1984 ). The second-order isotopic parameter deuterium excess d = δ D − 8 × δ 18 O ( Dansgaard 1964 ) is expected to be highly sensitive to kinetic effects occurring either during evaporation at the ocean surface or during atmospheric
