 The study by Routson showed an increase in deposition during megadroughts but used a measure of dust concentration rather than accumulation that is affected by the rate of sedimentation.The Routson study instead used dust accumulation rates and found no difference between dust deposition during drought years and megadroughts and deposition during normal hydroclimate conditions.Instead, they found that dust deposition is more likely controlled by transport mechanisms and sediment supply than by hydroclimate.