PT Journal AU Vigouroux, C Bauer Aquino, CA Bauwens, M Becker, C Blumenstock, T De Mazière, M García, O Grutter, M Guarin, C Hannigan, J Hase, F Jones, N Kivi, R Koshelev, D Langerock, B Lutsch, E Makarova, M Metzger, J Müller, J Notholt, J Ortega, I Palm, M Paton-Walsh, C Poberovskii, A Rettinger, M Robinson, J Smale, D Stavrakou, T Stremme, W Strong, K Sussmann, R Té, Y Toon, G TI NDACC harmonized formaldehyde time series from 21 FTIR stations covering a wide range of column abundances SO Atmospheric measurement techniques PY 2018 BP 5049 EP 5073 VL 11 IS 9 DI 10.5194/amt-11-5049-2018 LA english ER