Paton-Walsh, C; Mittermeier, R L*; Bell, W; Fast, H*; Jones, N B*; Meier, A* (2008) An intercomparison of ground-based solar FTIR measurements of atmospheric gases at Eureka, Canada. J. Atmos. Ocean. Technol., 25 (11). pp. 2028-2036.

Griffith, D W T*; Jones, N B*; McNamara, B*; Paton Walsh, C; Bell, W; Bernardo, C* (2003) Intercomparison of NDSC ground-based solar FTIR measurements of atmospheric gases at Lauder, New Zealand. J. Atmos. Ocean. Technol., 20 (8). pp. 1138-1153.

Hurtmans, D*; Dufour, G*; Bell, W; Henry, A*; Valentin, A*; Camy-Peyret, C* (2002) Line intensity of R(0) and R(3) of the 12CH4 2 3 band from diode laser spectroscopy. J. Mol. Spectrosc., 215. pp. 1-6.

Holland, P E; Woods, P T; Brookes, C; Uprichard, I J; Quincey, P; Robinson, R A; D'Souza, H; Milton, M J T; Goody, B; Bell, W; Alphonso, D (2001) The development of gas standards and calibration techniques for measurements of vehicle, aircraft and industrial emissions, natural gas, occupational exposure and air quality. Accred. Qual. Assur., 6 (3). pp. 120-129.

Paton Walsh, C; Bell, W; Gardiner, T D; Swann, N R; Howieson, I (2000) Assessment of stratospheric composition. NPL Report. COEM 42

Goldman, A*; Patton-Walsh, C; Bell, W; Toon, G C*; Blavier, J F*; Sen, B*; Coffey, MT*; Hannigan, J W*; Mankin, W G* (1999) Network for the detection of stratospheric change fourier transform infrared intercomparison at Table Mountain Facility, November 1996. J. Geophys. Res., 104 (D23). pp. 30481-30503.

Vance, A*; Bell, W; Paton Walsh, C; Jolliffe, B W (1998) Determination of the line shape of a fourier transform infra-red spectrometer using an infra-red helium-neon laser and a low pressure gas cell. NPL Report. COEM 8

Paton Walsh, C; Bell, W; Blumenstock, Th*; Chipperfield, M P*; Galle, B*; Mellqvist, J*; Notholt, J*; Zander, R*; Demoulin, P*; Mathieu, E* (1998) Ground-based FTIR measurements from a series of european sites during the winter of 1995/96 and a comparison with a 3D chemical transport model: evidence of chlorine activation and ozone depletion. NPL Report. COEM 9

Bell, W; Paton Walsh, C; Woods, P T; Nieuwenkemp, G*; Alink, A*; Borowiak, A*; De Saeger, E*; Macé, T*; Sutour, Ch.*; Rudolf, W* (1998) First annual progress report on standards, measurement and testing programme project SMT4-CT96-2094. Harmonising of air quality measurements in Europe ('HAMAQ'). NPL Report. COEM 4

Bell, W; Paton Walsh, C; Woods, P T; Donohoe, L; Gould, A; Secker, D; Naughten, S; Swann, N R; Martin, N A; Page, L E; Chipperfield, M P*; Lee, A M*; Pullen, S* (1998) Groundbased FTIR measurements of stratospheric trace species from Aberdeen during winter and spring 1993/94 and 1994/95 and comparison with a 3D model. J. Atmos. Chem., 30 (1). pp. 119-130.

Bell, W; Paton-Walsh, C; Woods, P T; Gardiner, T D; Chipperfield, M P*; Lee, A M* (1998) Groundbased FTIR measurements with high temporal resolution. J. Atmos. Chem., 30 (1). pp. 131-140.

Bell, W; Paton Walsh, C; Woods, P T; Martin, N A; Gardiner, T; Swann, N R (1997) The development and utilisation of advanced remote monitoring techniques for atmospheric measurements. NPL Report. CQM 133

Woods, P T; Bell, W; Paton Walsh, C; Gardiner, T; Martin, N A (1997) Groundbased measurements of stratospheric trace species around 60 degrees N as part of the SESAME campaign. NPL Report. QM 129

Bell, W; Paton Walsh, C; Gardiner, T; Woods, P T; Swann, N R; Martin, N A; Donohoe, L; Chipperfield, M P* (1997) Measurements of stratospheric chlorine monoxide (C10) from Groundbased FTIR observations. J. Atmos. Chem. (24). pp. 285-297.

Chipperfield, M P*; Burton, M*; Bell, W; Paton Walsh, C; Blumenstock, T*; Coffey, MT*; Hannigan, J W*; Mankin, W G*; Galle, B*; Mellqvist, J*; Mahieu, E*; Zander, R*; Notholt, J*; Sen, B*; Toon, G C* (1997) On the use of HF as a reference for the comparison of stratospheric observations and models. J. Geophys. Res., 102 (D11). pp. 12901-19.

Paton Walsh, C; Bell, W; Gardiner, T; Swann, N R; Woods, P T; Notholt, J*; Schutt, H*; Galle, B*; Arlander, W*; Mellqvist, J* (1997) An uncertainty budget for groundbased FTIR column measurements of HCI, HF, N2O and HNO3 deduced from results of side-by-side instrument intercomparisons. J. Geophys. Res., 102 (D7). pp. 8867-8873.

Chipperfield, M P*; Burton, M*; Bell, W; Paton Walsh, C; Blumenstock, Th*; Coffey, MT*; Hannigan, J W*; Mankin, W G*; Galle, B*; Mahieu, E*; Zander, R*; Notholt, J*; Sen, B*; Toon, G C* (1997) The use of HF as a reference for the comparison of stratospheric observations and models. J. Geophys. Res., 102. pp. 12901-12919.

Martin, N A; Woods, P T; Bell, W; Paton Walsh, C; Gardiner, T; Swann, N R (1996) The development and utilisation of advanced remote monitoring techniques for atmospheric measurements. NPL Report. QM 127

Martin, N A; Swann, N R W; Driskell, N T*; Allott, T P*; Noyes, P A*; Bell, W; Paton Walsh, C; Woods, P T (1996) Final report to the British Council. Measurement of stratospheric ozone depletion and air pollution using tunable diode lasers. NPL Report. QM 120

Martin, N A; Swann, N R W; Driskell, N T*; Allott, T P*; Noyes, P A*; Bell, W; Paton Walsh, C; Woods, P T (1996) Final report to the EC (NPL contribution), contract no. EV5V-93- 0350. Ground based atmospheric trace gas measurements by tunable laser heterodyne spectrometry in the mid-infrared. NPL Report. QM 121

Bell, W; Woods, P T; Martin, N A; Gardiner, T D; Swann, N R; Paton-Walsh, C (1995) The development and utilisation of advanced remote monitoring techniques for atmospheric measurements. NPL Report. QU 110

Bell, W; Woods, P T; Martin, N A; Gardiner, T D; Swann, N R; Paton-Walsh, C (1995) The development and utilisation of advanced remote monitoring techniques for atmospheric measurements. NPL Report. QU 106

Woods, P T; Milton, M J T; Bell, W; Partridge, R H; Martin, N A; Gardiner, T; Robinson, R A; Swann, N R W; D'Souza, H (1994) Advanced remote monitoring techniques for atmospheric measurements. NPL Report. QU 102