Browsing School of Water, Energy and Environment (SWEE) by Author "Ferracci, Valerio"

Browsing School of Water, Energy and Environment (SWEE) by Author "Ferracci, Valerio"

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  • Atmospheric isoprene measurements reveal larger-than-expected Southern Ocean emissions 
    Ferracci, Valerio; Weber, James; Bolas, Conor G.; Robinson, Andrew D.; Tummon, Fiona; Rodríguez-Ros, Pablo; Cortés-Greus, Pau; Baccarini, Andrea; Jones, Roderic L.; Galí, Martí; Simó, Rafel; Schmale, Julia; Harris, Neil R. P. (Springer Nature, 2024-03-22)
    Isoprene is a key trace component of the atmosphere emitted by vegetation and other organisms. It is highly reactive and can impact atmospheric composition and climate by affecting the greenhouse gases ozone and methane ...
  • CCQM-K90, formaldehyde in nitrogen, 2 μmol mol− 1 Final report 
    Viallon, Joële; Flores, Edgar; Idrees, Faraz; Moussay, Philippe; Wielgosz, Robert Ian; Kim, D.; Kim, Y. D.; Lee, S.; Persijn, S.; Konopelko, L. A.; Kustikov, Y. A.; Malginov, A. V.; Chubchenko, I. K.; Klimov, A. Y.; Efremova, O. V.; Zhou, Z.; Possolo, A.; Shimosaka, T.; Brewer, P.; Macé, T.; Ferracci, Valerio; Brown, Richard J. C.; Aoki, Aoki (IOP, 2017-09-26)
    The CCQM-K90 comparison is designed to evaluate the level of comparability of national metrology institutes (NMI) or designated institutes (DI) measurement capabilities for formaldehyde in nitrogen at a nominal mole fraction ...
  • Characterization of Fourier transform infrared, cavity ring-down spectroscopy, and optical feedback cavity-enhanced absorption spectroscopy instruments for the analysis of ammonia in biogas and biomethane 
    Culleton, Lucy P.; di Meane, Elena Amico; Ward, Michael K. M.; Ferracci, Valerio; Persijn, Stefan; Holmqvist, Albin; Arrhenius, Karine; Murugan, Arul; Brewer, Paul J. (American Chemical Society, 2022-10-27)
    Novel traceable analytical methods and reference gas standards were developed for the detection of trace-level ammonia in biogas and biomethane. This work focused on an ammonia amount fraction at an upper limit level of ...
  • Continuous isoprene measurements in a UK temperate forest for a whole growing season: effects of drought stress during the 2018 heatwave 
    Ferracci, Valerio; Bolas, Conor G.; Freshwater, Ray A.; Staniaszek, Zosia; King, Thomas; Jaars, Kerneels; Otu‐Larbi, Frederick; Beale, John; Malhi, Yadvinder; Waine, Toby William; Jones, Roderic L.; Ashworth, Kirsti; Harris, Neil R. P. (American Geophysical Union (AGU), 2020-07-08)
    Isoprene concentrations were measured at four heights below, within and above the forest canopy in Wytham Woods (UK) throughout the summer of 2018 using custom-built gas chromatographs (the iDirac). These observations were ...
  • Development of an urban greenhouse gas modelling system to support a London monitoring network 
    Hoare, D.; Jones, R. L.; Harris, Neil R. P.; Ferracci, Valerio; Carruthers, D.; Stidworthy, A.; Forsyth, E.; Rigby, M. (Wiley, 2020-09-07)
    A greenhouse gas monitoring network is being developed across London that will allow independent evaluation of reported emissions based on atmospheric data. The first site is operational at the Thames Barrier, and in this ...
  • Exploring the coupled ocean and atmosphere system with a data science approach applied to observations from the Antarctic Circumnavigation Expedition 
    Landwehr, Sebastian; Volpi, Michele; Haumann, F. Alexander; Robinson, Charlotte M.; Thurnherr, Iris; Ferracci, Valerio; Baccarini, Andrea; Thomas, Jenny; Gorodetskaya, Irina; Tatzelt, Christian; Henning, Silvia; Modini, Rob L.; Forrer, Heather J.; Lin, Yajuan; Cassar, Nicolas; Simó, Rafel; Hassler, Christel; Moallemi, Alireza; Fawcett, Sarah E.; Harris, Neil R. P.; Airs, Ruth; Derkani, Marzieh H.; Alberello, Alberto; Toffoli, Alessandro; Chen, Gang; Rodríguez-Ros, Pablo; Zamanillo, Marina; Cortés-Greus, Pau; Xue, Lei; Bolas, Conor G.; Leonard, Katherine C.; Perez-Cruz, Fernando; Walton, David; Schmale, Julia (EGU: European Geophysical Union, 2021-11-30)
    The Southern Ocean is a critical component of Earth's climate system, but its remoteness makes it challenging to develop a holistic understanding of its processes from the small scale to the large scale. As a result, our ...
  • Formic acid in hydrogen: is it stable in a gas container? 
    Bacquart, Thomas; Morris, Abigail S. O.; Hookham, Mathew; Ward, Michael K. M.; Underwood, Robin; Hristova, Yoana; Perkins, Mark; Ferracci, Valerio; Murugan, Arul (MDPI, 2023-06-07)
    Formic acid is an intermediate of the steam methane reforming process for hydrogen production. According to International Standard ISO 14687, the amount fraction level of formic acid present in the hydrogen supplied to ...
  • Global modelling of the total OH reactivity: investigations on the “missing” OH sink and its atmospheric implications 
    Ferracci, Valerio; Heimann, Ines; Abraham, N. Luke; Pyle, John A.; Archibald, Alexander T. (European Geosciences Union (EGU) / Copernicus Publications, 2018-05-24)
    The hydroxyl radical (OH) plays a crucial role in the chemistry of the atmosphere as it initiates the removal of most trace gases. A number of field campaigns have observed the presence of a “missing” OH sink in a variety ...
  • iDirac: a field-portable instrument for long-term autonomous measurements of isoprene and selected VOCs 
    Bolas, Conor G.; Ferracci, Valerio; Robinson, Andrew D.; Mead, Mohammed Iqbal; Nadzir, Mohd Shahrul Mohd; Pyle, John A.; Jones, Roderic L.; Harris, Neil R. P. (European Geosciences Union, 2020-02-19)
    The iDirac is a new instrument to measure selected hydrocarbons in the remote atmosphere. A robust design is central to its specifications, with portability, power efficiency, low gas consumption and autonomy as the other ...
  • Inferring London’s methane emissions from atmospheric measurements 
    Hoare, Daniel; Jones, Rod L.; Fan, Shiwei; Harris, Neil R. P.; Ferracci, Valerio; Carruthers, David; Stidworthy, Amy; Forsyth, Ella; Rigby, Matt (EGU: European Geophysical Union, 2021-04-30)
  • Investigation of cylinder pre-treatments for the stability of ammonia gas reference materials 
    di Meane, Elena Amico; Brown, Richard J. C.; Brewer, Paul J.; Ferracci, Valerio; van Wijk, Janneke I. T. (Springer, 2022-07-14)
    This report describes work to evaluate the performance of different commercial and proprietary cylinder treatments in improving the stability of ammonia reference materials in high pressure cylinders. Gas mixtures of 100 ...
  • Modelling the effect of the 2018 summer heatwave and drought on isoprene emissions in a UK woodland 
    Otu‐Larbi, Frederick; Bolas, Conor G.; Ferracci, Valerio; Staniaszek, Zosia; Jones, Roderic L.; Malhi, Yadvinder; Harris, Neil R. P.; Wild, Oliver; Ashworth, Kirsti (Wiley, 2019-12-13)
    Projected future climatic extremes such as heatwaves and droughts are expected to have major impacts on emissions and concentrations of biogenic volatile organic compounds (bVOCs) with potential implications for air quality, ...
  • Optimizing the isoprene emission model MEGAN with satellite and ground-based observational constraints 
    DiMaria, Christian A.; Jones, Dylan B. A.; Worden, Helen; Bloom, A. Anthony; Bowman, Kevin; Stavrakou, Trissevgeni; Miyazaki, Kazuyuki; Worden, John; Guenther, Alex; Sarkar, Chinmoy; Seco, Roger; Park, Jeong-Hoo; Tota, Julio; Gomes Alves, Eliane; Ferracci, Valerio (American Geophysical Union (AGU) - Wiley, 2023-02-02)
    Isoprene is a hydrocarbon emitted in large quantities by terrestrial vegetation. It is a precursor to several air quality and climate pollutants including ozone. Emission rates vary with plant species and environmental ...
  • Production and stability of low amount fraction of formaldehyde in hydrogen gas standards 
    Bacquart, Thomas; Perkins, Mark; Ferracci, Valerio; Martin, Nicholas A.; Resner, Kate; Ward, Michael K. M.; Cassidy, Nathan; Hook, Joshua B.; Brewer, Paul J.; Irvine, John T. C.; Connor, Paul A.; Murugan, Arul (Elsevier, 2018-03-03)
    Formaldehyde is an intermediate of the steam methane reforming process for hydrogen production. According to International Standard ISO 14687-2 the amount fraction level of formaldehyde present in hydrogen supplied to fuel ...
  • Revisiting the concentration observations and source apportionment of atmospheric ammonia 
    Pan, Yuepeng; Gu, Mengna; He, Yuexin; Wu, Dianming; Liu, Chunyan; Song, Linlin; Tian, Shili; Lü, Xuemei; Sun, Yang; Song, Tao; Walters, Wendell W.; Liu, Xuejun; Martin, Nicholas A.; Zhang, Qianqian; Fang, Yunting; Ferracci, Valerio; Wang, Yuesi (Springer, 2020-08-13)
    While China’s Air Pollution Prevention and Control Action Plan on particulate matter since 2013 has reduced sulfate significantly, aerosol ammonium nitrate remains high in East China. As the high nitrate abundances are ...
  • ROOOH: the missing piece of the puzzle for OH measurements in low NO environments 
    Fittschen, Christa; Al Ajami, Mohamad; Batut, Sebastien; Ferracci, Valerio; Archer-Nicholls, Scott; Archibald, Alexander T.; Schoemaecker, Coralie (European Geosciences Union (EGU) / Copernicus Publications, 2019-01-10)
    Field campaigns have been carried out with the FAGE (fluorescence assay by gas expansion) technique in remote biogenic environments in the last decade to quantify the in situ concentrations of OH, the main oxidant in the ...
  • Understanding sources and drivers of size-resolved aerosol in the High Arctic islands of Svalbard using a receptor model coupled with machine learning 
    Song, Congbo; Becagli, Silvia; Beddows, David C. S.; Brean, James; Browse, Jo; Dai, Qili; Dall'Osto, Manuel; Ferracci, Valerio; Harrison, Roy M.; Harris, Neil R. P.; Li, Weijun; Jones, Anna E.; Kirchgäßner, Amelie; Kramawijaya, Agung Ghani; Kurganskiy, Alexander; Lupi, Angelo; Mazzola, Mauro; Severi, Mirko; Traversi, Rita; Shi, Zongbo (American Chemical Society, 2022-07-25)
    Atmospheric aerosols are important drivers of Arctic climate change through aerosol–cloud–climate interactions. However, large uncertainties remain on the sources and processes controlling particle numbers in both fine and ...

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