Comments on “Instant and delayed effects of March biomass burning aerosols over the Indochina Peninsula” by Zhu et al.

This paper used WRF-Chem model to explore the feedback mechanisms of BB aerosols-climate interactions during March biomass burning in Indochina Peninsula. They reported that BB released aerosols could inhibit precipitation in ICP, showing instant and lag effects on local and regional rainfall. To discern the feedback effects, authors conducted two groups of simulations with control (CTRL) and sensitivity (BBER) model scenario experiments. They then compared the results from CTRL and BBER to quantify the BB effects.

The paper is well-written and result analysis makes sense. My concern is that WRF-Chem modeling system fully coupled with two-way interaction offers unique option to examine the association between aerosols and meteorology. The feedback configuration takes into account both direct and indirect aerosol effects, thereby to provide better interpretations to the feedback effects on meteorology by turning on and off the feedback configuration. Authors’ modeling investigation rely largely on the selection of BB emission reduction or enhancement in the sensitivity experiment.  

Can authors provide a BB emission map in Indochina Peninsula? The BB emission in this region seems far less than that in India and sub-Saharan Africa.

Although authors mentioned uncertainty in their modeling investigation, no uncertainty analysis was done. How about uncertainty in BB emissions?