TY - JOUR A1 - Volten, H. A1 - Bergwerff, J. B. A1 - Haaima, M. A1 - Lolkema, D. E. A1 - Berkhout, A. J. C. A1 - van der Hoff, G. R. A1 - Potma, C. J. M. A1 - Wichink Kruit, R. J. A1 - van Pul, W. A. J. A1 - Swart, D. P. J. T1 - Two instruments based on differential optical absorption spectroscopy (DOAS) to measure accurate ammonia concentrations in the atmosphere JO - Atmos. Meas. Tech. J1 - AMT VL - 5 IS - 2 SP - 413 EP - 427 Y1 - 2012/02/21 PB - Copernicus Publications SN - 1867-8548 UR - https://amt.copernicus.org/articles/5/413/2012/ L1 - https://amt.copernicus.org/articles/5/413/2012/amt-5-413-2012.pdf DO - 10.5194/amt-5-413-2012 ER -