Article

Pearce, J; Bevilacqua, L; Underwood, R; Bell, S (2024) A validated multi-physics model of a meteorological instrument shelter. AIP Conference Proceedings, 3230 (1). 130001

de Podesta, M; Underwood, R; Bevilacqua, L; Bell, S (2018) Air temperature measurement challenges in precision metrology. Journal of Physics: Conference Series, 1065. 122027 ISSN 1742-6588

Yang, I; Underwood, R; de Podesta, M (2018) Investigating the adequacy of a low-cost vector network analyser for microwave measurements in quasispherical resonators. Measurement Science and Technology, 29 (7). 075013

de Podesta, M; Bell, S; Underwood, R (2018) Air temperature sensors: dependence of radiative errors on sensor diameter in precision metrology and meteorology. Metrologia, 55 (2). pp. 229-244.

Fischer, J; Fellmuth, B; Gaiser, C; Zandt, T; Pitre, L; Sparasci, F; Plimmer, M D; de Podesta, M; Underwood, R; Sutton, G; Machin, G; Gavioso, R M; Madonna Ripa, D; Steur, P P M; Qu, J; Feng, X J; Zhang, J; Moldover, M R; Benz, S P; White, D R; Gianfrani, L; Castrillo, A; Moretti, L; Darquié, B; Moufarej, E; Daussy, C; Briaudeau, S; Kozlova, O; Risegari, L; Segovia, J J; Martín, M C; del Campo, D (2018) The Boltzmann project. Metrologia, 55 (2). pp. R1-R20. ISSN 0026-1394

Merlone, A; Sanna, F; Beges, G; Bell, S; Beltramino, G; Bojkovski, J; Brunet, M; del Campo, D; Castrillo, A; Chiodo, N; Colli, M; Coppa, G; Cuccaro, R; Dobre, M; Drnovsek, J; Ebert, V; Fernicola, V; Garcia-Benadí, A; Garcia-Izquierdo, C; Gardiner, T; Georgin, E; Gonzalez, A; Groselj, D; Heinonen, M; Hernandez, S; Högström, R; Hudoklin, D; Kalemci, M; Kowal, A; Lanza, L; Miao, P; Musacchio, C; Nielsen, J; Nogueras-Cervera, M; Oguz Aytekin, S; Pavlasek, P; de Podesta, M; Rasmussen, M K; del-Río-Fernández, J; Rosso, L; Sairanen, H; Salminen, J; Sestan, D; Šindelářová, L; Smorgon, D; Sparasci, F; Strnad, R; Underwood, R; Uytun, A; Voldan, M (2018) The MeteoMet2 project—highlights and results. Measurement Science and Technology, 29 (2). 025802 ISSN 0957-0233

de Podesta, M; Mark, D F; Dymock, R C; Underwood, R; Bacquart, T; Sutton, G; Davidson, S; Machin, G (2017) Re-estimation of argon isotopes ratios leading to a revised estimate of the Boltzmann constant. Metrologia, 54 (5). pp. 683-692.

Underwood, R; de Podesta, M; Sutton, G; Stanger, L; Rusby, R; Harris, P; Morantz, P; Machin, G (2017) Further estimates of (T - T-90) close to the triple point of water. Int. J. Thermophysics, 38 (3). p. 44.

Underwood, R; Gardiner, T; Finlayson, A; Bell, S A; de Podesta, M (2017) An improved non-contact thermometer and hygrometer with rapid response. Metrologia, 54 (1). S9-S15

Underwood, R; de Podesta, M; Sutton, G; Stanger, L; Rusby, R; Harris, P M; Morantz, P*; Machin, G (2016) Estimates of the difference between thermodynamic temperature and the International Temperature Scale of 1990 in the range 118 K to 303 K. Philos. Trans. R. Soc. Lond. A, Math. Phys. Eng. Sci., 374 (2064). 20150048

Gavioso, R M*; Ripa, D M*; Steur, P P M*; Gaiser, C*; Zandt, T*; Fellmuth, B*; de Podesta, M; Underwood, R; Sutton, G; Pitre, L*; Sparasci, F*; Risegari, L*; Gianfrani, L*; Castrillo, A*; Machin, G (2016) Progress towards the determination of the thermodynamic temperature with ultra-low uncertainty. Philos. Trans. R. Soc. Lond. A, Math. Phys. Eng. Sci., 374 (2064). 20150046

de Podesta, M; Harris, P M; Underwood, R; Sutton, G; Mark, D F*; Stuart, F*; Morantz, P*; Machin, G (2016) Response to Macnaughton's"Comment on `A low-uncertainty measurement of the Boltzmann constant'". Metrologia, 53 (1). pp. 116-122.

de Podesta, M; Inseok Yang*,; Mark, D F*; Underwood, R; Sutton, G; Machin, G (2015) Correction of NPL-2013 estimate of the Boltzmann constant for argon isotopic composition and thermal conductivity. Metrologia, 52 (5). S353-S363

Merlone, A*; Lopardo, G*; Sanna, F*; Bell, S A; Benyon, R*; Bergerud, R A*; Bertiglia, F*; Bojkovski, J*; Bose, N*; Brunet, M*; Cappella, A*; Coppa, G*; del Campo, D*; Dobre, M*; Drnovsek, J*; Ebert, V*; Emardson, R*; Fernicola, V*; Flakiewicz, K*; Gardiner, T; Garcia-Izquierdo, C*; Georgin, E*; Gilabert, A*; Grykalowska, A*; Grudniewicz, E*; Heinonen, M*; Holmsten, M*; Hudoklin, D*; Johansson, J*; Kajastie, H*; Kaykisizli, H*; Klason, P*; Knazovicka, L*; Lakka, A*; Kowal, A*; Muller, H*; Musacchio, C*; Nwaboh, J*; Pavlasek, P*; Piccato, A*; Pitre, L*; de Podesta, M; Rasmussen, M K*; Sairanen, H*; Smorgon, D*; Sparasci, F*; Strnad, R*; Szmyrka-Grzebyk, A*; Underwood, R (2015) The MeteoMet project - metrology for meteorology: challenges and results. Meteorological Applications, 22. pp. 820-829.

Underwood, R; Gardiner, T; Finlayson, A; Few, J; Wilkinson, J; Bell, S A; Merrison, J*; Iverson, J J*; de Podesta, M (2015) A combined non-contact acoustic thermometer and infrared hygrometer for atmospheric measurements. Meteorological Applications, 22. pp. 830-835.

Fischer, J*; Fellmuth, B*; Gaiser, C*; Zandt, T*; Pitre, L*; Briaudeau, S*; Sparasci, F*; Truong, D*; Hermier, Y*; Gavioso, R M*; Guianvarc'h, C*; Albo, P A G*; Merlone, A*; Moro, F*; de Podesta, M; Sutton, G; Underwood, R; Machin, G; del Campo, D*; Segovia Puras, J*; Vega-Meza, D*; Petersen, J*; Hald, J*; Nielsen, L*; Valkiers, S*; Darquie, B*; Borde, C*; Chardonnet, C*; Daussy, C*; Gianfrani, L*; Castrillo, A*; Laporta, P*; Galzerano, G* (2013) The IMERAPlus joint research project for determinations of the Boltzmann constant. AIP Conf. Proc., 1552. pp. 1-10.

de Podesta, M; Underwood, R; Sutton, G; Morantz, P*; Harris, P M (2013) Internal consistency in the determination of the Boltzmann constant using a quasispherical resonator. AIP Conf. Proc., 1552. pp. 17-22.

de Podesta, M; Underwood, R; Sutton, G; Morantz, P*; Harris, P M; Mark, D F*; Stuart, F M*; Vargha, G*; Machin, G (2013) A low-uncertainty measurement of the Boltzmann constant. Metrologia, 50 (4). pp. 354-376.

de Podesta, M; Sutton, G; Underwood, R; Perkin, M; Davidson, S; Morantz, P* (2011) Assessment of uncertainty in the determination of the Boltzmann constant by an acoustic technique. Int. J. Thermophysics, 32 (1-2). pp. 413-426.

Underwood, R; Flack, D R; Morantz, P*; Sutton, G; Shore, P*; de Podesta, M (2011) Dimensional characterisation of a quasispherical resonator by microwave and coordinate measurement techniques.. Metrologia, 48 (1). pp. 1-15.

de Podesta, M; Sutton, G; Underwood, R; Bell, S A; Stevens, M; Byrne, T; Josephs-Franks, P W (2011) Outgassing of water vapour, and its significance in experiments to determine the Boltzmann constant. Metrologia, 48 (1). pp. L1-L6.

Edwards, G J; Underwood, R (2011) The electromagnetic fields of triaxial ellipsoid calculated by modal superposition. Metrologia, 48 (3). pp. 114-122.