Following the standard CERES SYN1deg Lite daily data production procedure, we perform two sets of Fu-Liou radiative transfer calculations for the DYNAMO period. They respectively use 3-hourly temperature and specific humidity from a 1-degree global GMAO reanalysis that assimilates global observations including DYNAMO observations and a parallel reanalysis that removes DYNAMO observations, with 3-hourly cloud and various surface fields taken from CERES SYN1deg_Lite Ed3A. The comparison of these results shows that the improvement of CERES-like surface atmosphere radiation estimation mainly occurs in longwave fluxes over central tropical Indian Ocean. Over these regions, the daily surface downward longwave estimation increases by about 5 Wm-2, which are primarily contributed by the warming and moistening in the lower troposphere; the daily top-of-atmosphere outgoing longwave radiation increases by 2-3 Wm-2 during dry periods only, which are mainly due to the drying in the middle troposphere. As a result, the estimated atmospheric longwave cooling over tropical Indian Ocean enhances by about 5 Wm-2 during deep convective periods and 7-8 Wm-2 during suppressed periods. The implications of these improvements of longwave estimation for the depiction of observed cloud-radiative processes during MJO initiation over tropical Indian Ocean will be discussed.