Global-scale atmosphere monitoring by in-service aircraft – current
                        achievements and future prospects of the European Research Infrastructure
                        IAGOS

Petzold, A.; Thouret, V.; Gerbig, Christoph; Zahn, Andreas; Brenninkmeijer, Carl A. M.; Gallagher, Martin; Hermann, M.; Pontaud, Marc; Ziereis, H.; Boulanger, Damien; Marshall, Julia; Nédélec, Philippe; Smit, H. G. J.; Frieß, Udo; Flaud, J.‐M.; Wahner, Andreas; Cammas, Jean‐Pierre; Volz‐Thomas, A.

doi:10.3402/tellusb.v67.28452

Cited by 182 publications

(173 citation statements)

References 74 publications

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“…Only few long-term data sets exist. The European Research Infrastructure IAGOS has used commercial passenger aircrafts to obtain a 20-year data set of atmospheric components in the troposphere and stratosphere with global spatial coverage (Petzold et al 2015). Two extensive studies to characterize the vertical profiles of aerosol optical parameters were performed over Oklahoma (Andrews et al 2011) and over Illinois (Sheridan et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Vertical and horizontal variation of aerosol number size distribution in the boreal environment

Väänänen

Krejci

Manninen

et al. 2016

Preprint

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15This study explores the vertical and horizontal variability of the particle number size distribution from two flight measurements campaigns over a boreal forest in Hyytiälä, Finland during May-June 2013 and March-April 2014, respectively. Our other aims were to study the spatial extent of new particle formation events and to compare the airborne observation with the ground measurements from the SMEAR II (Station for Measuring Ecosystem-Atmosphere Relations) field station located in Hyytiälä.The airborne measurements extended vertically 3.8 km and horizontally 30 km from the station. A Cessna 172 aircraft was 20 used as a measurement platform. The measured parameters included the particle number concentration (>3 nm) and particle number size distribution (10-400 nm). The airborne data used in this study were equal to 111 flight hours. The measurements showed that despite local fluctuations there was a good agreement between the on-ground and airborne measurements inside the planetary boundary layer. On median, the airborne total number concentration was found to be 10 % larger than at the ground level. The seasonal and meteorological differences between the campaigns were reflected in aerosol properties. NPF 25 days showed areas of intensified NPF on a scale from kilometres up to couple of tens of kilometres in the planetary boundary layer. NPF was also observed frequently in the free troposphere.Atmos. Chem. Phys. Discuss., doi:10.5194/acp-2016Discuss., doi:10.5194/acp- -556, 2016 Manuscript under review for journal Atmos. Chem. Phys. Published: 18 July 2016 c Author(s) 2016. CC-BY 3.0 License. 2 IntroductionAtmospheric measurements performed at ground-based stations are often generalized to represent the conditions on the larger scale. However, the spatial and temporal scales of the complex atmospheric phenomena, like new particle formation (NPF), and information on spatial variability of aerosol properties is needed for correct extrapolation and parametrization of groundbased observations to larger scale and for use in modelling studies. 5Numerous measurement have shown that the NPF from precursor gases (Kulmala et al. 2013) occurs frequently around the world (Kulmala and Kerminen 2008, Kulmala et al. 2004, Zhang et al. 2012, and that the subsequent growth of these fresh-born particles is a climatically important source of cloud condensation nuclei (CCN) . Model studies by Spracklen et al (2008) and Merikanto et al (2009) show that NPF in the planetary boundary layer (PBL) can increase the global PBL CCN production up to 50 %. The Hyytiälä SMEAR II (Station for Measuring Ecosystem-10Atmosphere Relations) measurement site located in Southern Finland has provided an extensive two-decade long measurement time series of aerosol properties in a rural boreal forest environment (Hari and Kulmala 2005, Nieminen et al. 2014). In Hyytiälä, NPF days are occurring regularly on around 25% of the days with a peak observed during the spring when NPF occurs almost every other day on average , Nieminen et al. 2014....

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Section: Introductionmentioning

confidence: 99%

Vertical and horizontal variation of aerosol number size distribution in the boreal environment

Väänänen

Krejci

Manninen

et al. 2016

Preprint

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“…# 2015 P. Neis et al This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), allowing third parties to copy and redistribute the material in any medium or format and to remix, transform, and build upon the material for any purpose, even commercially, provided the original work is properly cited and states its license. Marenco et al, 1998) and its successor IAGOS (In-service Aircraft for a Global Observing System; Petzold et al, 2015) have provided regular data for relative humidity (RH) and other meteorological quantities such as temperature and pressure as well as data on atmospheric composition (e.g. ozone and CO) with high spatial and temporal resolution on a global scale.…”

Section: Introductionmentioning

confidence: 99%

Quality assessment of MOZAIC and IAGOS capacitive hygrometers: insights from airborne field studies

Neis

Smit²,

Rohs³

et al. 2015

Tellus B: Chemical and Physical Meteorology

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A B S T R A C TIn 2011, the MOZAIC (Measurement of Ozone by AIRBUS In-Service Aircraft) successor programme IAGOS (In-service Aircraft for a Global Observing System) started to equip their long-haul passenger aircraft with the modified capacitive hygrometer Vaisala HUMICAP † of type H. The assurance of the data quality and the consistency of the data set during the transition from MOZAIC Capacitive Hygrometers to IAGOS Capacitive Hygrometers were evaluated within the CIRRUS-III and AIRTOSS-ICE field studies. During these performance tests, the capacitive hygrometers were operated aboard a Learjet 35A aircraft together with a closedcell Lyman-a fluorescence hygrometer, an open-path tunable diode laser (TDL) system and a closed-cell, direct TDL absorption hygrometer for water vapour measurement. For MOZAIC-typical operation conditions, the comparison of relative humidity (RH) data from the capacitive hygrometers and reference instruments yielded remarkably good agreement with an uncertainty of 5% RH. The temperature dependence of the sensor's response time was derived from the cross-correlation of capacitive hygrometer data and smoothed data from the fast-responding reference instruments. The resulting exponential moving average function could explain the major part of the observed deviations between the capacitive hygrometers and the reference instruments.

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“…The fully automated instruments are designed for operation aboard the aircraft in unattended mode for several weeks and the data are transmitted automatically. The complementary IAGOS-CARIBIC component consists of the monthly deployment of a cargo container equipped with instrumentation for a larger suite of components; see Petzold et al (2015) for more details.…”

Section: Introductionmentioning

confidence: 99%

The IAGOS-CORE aerosol package: instrument design, operation and performance for continuous measurement aboard in-service aircraft

Bundke

Berg

Houben

et al. 2015

Tellus B: Chemical and Physical Meteorology

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A B S T R A C T This work presents the characterisation of the Aerosol Package for the European Research Infrastructure IAGOS (In-service Aircraft for a Global Observing System). Condensation particle counter (CPC) are used to measure the aerosol number concentration of the total and the non-volatile particles. The size distribution is measured by means of an optical particle counter (OPC) in the diameter range of 0.25Á3 mm. In particular the OPC is characterised for (1) leakage, (2) flow and calibration stability over the expected IAGOS pressure range of 170 hPa to 1013 hPa, (3) OPC accuracy test by comparing extinction measurements with calculated values from Mie theory using the OPC size distribution and (4) the inter-instrumental precision. The CPC is characterised in the same pressure range for (1) the lower cut-off diameter, (2) the instrument accuracy by comparing with a reference instrument (Faraday Cup Electrometer, FCE) and (3) the instrument precision. We conclude that the IAGOS Aerosol Package is a fully automated, robust, low-maintenance instrument providing high precision measurements with good accuracy.

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Global-scale atmosphere monitoring by in-service aircraft – current achievements and future prospects of the European Research Infrastructure IAGOS

Cited by 182 publications

References 74 publications

Vertical and horizontal variation of aerosol number size distribution in the boreal environment

Vertical and horizontal variation of aerosol number size distribution in the boreal environment

Quality assessment of MOZAIC and IAGOS capacitive hygrometers: insights from airborne field studies

The IAGOS-CORE aerosol package: instrument design, operation and performance for continuous measurement aboard in-service aircraft

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