on mdb finance concessional and nonconcessional flowing to climate change is the most difficult to estimate because there is comprehensive data set from which to draw and available estimates are now dated drawing on world bank it is estimated that just over bn usd flows to support climate action remaining constant as what was reported in this is considered to be a minimum estimate exportcredits vary widely from year to year for this reason the authors use an average year estimate drawing on data from the low estimate of mitigation flows is estimated to be about bn usd total funds pledged for adaptation are estimated to amount to billion of which a little over half has been committed