Defining relative humidity in terms of water activity. Part 1: definition

Autor: Rainer Feistel, J W Lovell-Smith

Publikováno v: Metrologia. 54:566-576

Relative humidity (RH) is a quantity widely used in various fields such as metrology, meteorology, climatology or engineering. However, RH is neither uniformly defined, nor do some definitions properly account for deviations from ideal-gas properties

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d4ebd888a7ade2b41367dfdc956a89e7
https://doi.org/10.1088/1681-7575/aa7083

Uncertainty of empirical correlation equations

Autor: P. Saunders, J W Lovell-Smith, Steffen Seitz, Rainer Feistel

Publikováno v: Metrologia. 53:1079-1090

The International Association for the Properties of Water and Steam (IAPWS) has published a set of empirical reference equations of state, forming the basis of the 2010 Thermodynamic Equation of Seawater (TEOS-10), from which all thermodynamic proper

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d5f5c0ef2abd8d2c63840acf41b4abdf
https://doi.org/10.1088/0026-1394/53/4/1079

Metrological challenges for measurements of key climatological observables: oceanic salinity and pH, and atmospheric humidity. Part 1: overview

Autor: Trevor J. McDougall, Olaf Hellmuth, Robert Wielgosz, Maria Filomena Camões, Martti Heinonen, Rainer Feistel, Steffen Seitz, Henning Wolf, H J Kretzschmar, P. S. Ridout, J. R. Cooper, Paola Fisicaro, A G Dickson, Daniela Stoica, P Dexter, Rich Pawlowicz, J W Lovell-Smith, Allan H. Harvey, S A Bell, Petra Spitzer

Publikováno v: Metrologia, vol 53, iss 1
Feistel, R; Wielgosz, R; Bell, SA; Camoes, MF; Cooper, JR; Dexter, P; et al.(2016). Metrological challenges for measurements of key climatological observables: oceanic salinity and pH, and atmospheric humidity. Part 1: overview. METROLOGIA, 53(1), R1-R11. doi: 10.1088/0026-1394/53/1/R1. UC San Diego: Retrieved from: http://www.escholarship.org/uc/item/20p2k889
Feistel, R, Wielgosz, R, Bell, S A, Camões, M F, Cooper, J R, Dexter, P, Dickson, A G, Fisicaro, P, Harvey, A H, Heinonen, M, Hellmuth, O, Kretzschmar, H-J, Lovell-Smith, J W, McDougall, T J, Pawlowicz, R, Ridout, P, Seitz, S, Spitzer, P, Stoica, D & Wolf, H 2016, ' Metrological challenges for measurements of key climatological observables: Oceanic salinity and pH, and atmospheric humidity. Part 1: Overview ', Metrologia, vol. 53, no. 1, pp. R1-R11 . https://doi.org/10.1088/0026-1394/53/1/R1

Water in its three ambient phases plays the central thermodynamic role in the terrestrial climate system. Clouds control Earth's radiation balance, atmospheric water vapour is the strongest "greenhouse" gas, and non-equilibrium relative humidity at t

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https://doi.org/10.1088/0026-1394/53/1/r1

Unleashing Empirical Equations with 'Nonlinear Fitting' and 'GUM Tree Calculator'

Autor: Rainer Feistel, P. Saunders, J W Lovell-Smith

Publikováno v: International Journal of Thermophysics. 38

Empirical equations having large numbers of fitted parameters, such as the international standard reference equations published by the International Association for the Properties of Water and Steam (IAPWS), which form the basis of the “Thermodynam

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https://doi.org/10.1007/s10765-017-2282-y

Polyimide coated fibre Bragg grating based moisture sensor development

Autor: M. D. H. Bhuiyan, J W Lovell-Smith, S. G. Raymond, R. D. Breukers, Adam Swanson, Mark R. Waterland, S. Janssens

Publikováno v: 2015 11th Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR).

The humidity and temperature characteristics of a 53 μm polyimide coated fibre Bragg grating (FBG) were investigated. The humidity response was 7.09 pm / %rh resulting in a coefficient of moisture expansion of 74.3 ppm /%rh. The temperature response

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4eef5c6802823463f6855bf62288e21b
https://doi.org/10.1109/cleopr.2015.7376334