NDACC harmonized formaldehyde time- series from 21 FTIR stations covering a wide range of column abundances

Aquino, C. A. B., Bauwens, M., Becker, C., Blumenstock, T., Mazi`ere, M. D., Garc ́ıa, O., Grutter, M., Guarin, C., Hannigan, J., Hase, F., Jones, N., Kivi, R., Koshelev, D., Langerock, B., Lutsch, E., Makarova, M., Metzger, J.-M., Mu ̈ller, J.-F., 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., T ́e, Y., and Toon, G.