1. Congo Basin rainfall climatology: can we believe the climate models? by Richard Washington, Rachel James, Helen Pearce, Wilfried M. Pokam, and Wilfran Moufouma-Okia Philosophical Transactions B Volume 368(1625):20120296 September 5, 2013 ©2013 by The Royal Society

2. Number of rain gauges per year over the region 5° S–5° N, 12.5–30° E in the CRU 0.5° rainfall dataset. Richard Washington et al. Phil. Trans. R. Soc. B 2013;368:20120296 ©2013 by The Royal Society

3. Long-term mean annual cycle of rainfall (mm d−1) for Equatorial Central Africa over the region 5° S–5° N, 12.5–30° E for the following datasets: CMAP, TRMM, TAMSAT, CMORPH, NCEP, CSFR, ERA-40, ERA-Interim, ensemble mean of CMIP3 and CMIP5. Richard Washington et al. Phil. Trans. R. Soc. B 2013;368:20120296 ©2013 by The Royal Society

4. Rainfall climatologies (mm d−1) during MAM for the following datasets: (a) CMAP, (b) TAMSAT, (c) NCEP, (d) ERA-40, (e) ensemble mean of CMIP3, (f) TRMM, (g) CMORPH, (h) CFSR, (i) ERA- Interim, (j) ensemble mean of CMIP5. Richard Washington et al. Phil. Trans. R. Soc. B 2013;368:20120296 ©2013 by The Royal Society

5. Rainfall climatologies for (a) MAM and (b) SON for the 10 datasets used in figure 2. Richard Washington et al. Phil. Trans. R. Soc. B 2013;368:20120296 ©2013 by The Royal Society

6. (a) Rainfall (mm d−1) and (b) moisture flux at 850 hPa climatologies for (i) the driest (CNRM-CM5) and (ii) wettest (NorESM1-M) models in SON. Units are mm d−1 in (a) and g kg−1 m s−1 in (b) with contours of divergence (g kg−1 s−1). Richard Washington et al. Phil. Trans. R. Soc. B 2013;368:20120296 ©2013 by The Royal Society