Thank you for the responses to the comments of reviewer (1).

There are a few things I would like you to expand on a little. Mainly it is when you give a response , but the MS does not seem to have been modified to reflect the response. See below.

The reviewer asks:
In the model description it seems to suggest that the uncertainty in the model is just due to the uncertainty in the observational constraints (linee184-5). What about uncertainties in chemical mechanism - rate coefficients, reaction products, reaction simplifications?

Your reply to this:
"The uncertainties in chemical mechanism was calculated to be less than 20%
according to the method described in Lu et al. (2012)."

This is somewhat vague. Can you please indicate which parts of the chemical mechanism are likely to have the largest uncertainties and give a little more detail on those areas of the mechanism which contribute most to the overall 20% that Lu et al. report.

Can you please indicate the fraction of peroxides which are lost by dry deposition. You state it is not major, whereas the referee states that dry deposition is major - can you please provide some evidence that dry deposition is minor.

Referee said:
Lines 211-13: If MHP and PAA being about 20% and 5% of the total peroxides in Wangdu is similar to the results from other rural sites in China, then presumably it could also be stated that with 70% of the peroxides in Wangdu being H2O2 that Wangdu is also similar to other rural sites in China?

Your reply is "yes" but can you make sure that this is stated in the MS - you did not say you had done this.

Please state in the paper the criteria for when there is a "haze day". You state this nicely in the reply but not clear if stated in the MS - please ensure that it is.
It is very important that a clear definition of a haze day is contained in the MS.

The referee states:
Lines 299-305: The text here implies that there were modifications made to the
chemical mechanism, with the new reactions given in Table 2. However, it is not clear what they have changed from. New reactions or just new rates?

In your reply you say the new reaction between CH3O2 and HO2 was incorporated into your model. Please state clearly in the text exactly what you have done - state the old rate constants and what you have changed them to.

The referee says:
When discussing Fig. 3. I would like to see more comment on the shape of the diurnal cycle. The modelled and measured shapes are often very different.

You reply to this, but you do not seem to say you have changed the MS for this. Please put more comment on the shape of the diurnal cycle in the MS as the referee asks.

The referee says:
What is the impact of including primary sources of the peroxides on the chemistry? E.g. does it have an impact on HOx? Are the modelled HOx values comparable to observed values and does the addition of primary sources change this comparison?

You say the impact on HOx is marginal. Can you please give a precise % value for this and put this in the MS.

Referee question and response:
Lines 483-498: Given that OH concentrations and photolysis rates will be reduced in the evenings, the lifetimes calculated will be lower than daytime values. Are the modelled values 24 hour averages? It needs to be clear exactly what you are comparing and if they are for the same times of day. How sensitive are the modelled relative losses (Fig. 6) to uncertainties in the boundary layer height?

Reply: Yes. The modelled values were 24 hour averages. The comparison was done for the same times of day. The sensitivity of modelled relative loss of dry deposition to the uncertainties in the planetary boundary layer height was low, for instance, the contribution of dry deposition to the loss of H2O2 in Phase I decreased from 17% to 10% with the PBL height doubled. Heterogeneous uptake by aerosols was still the predominant sink for atmospheric peroxides.

Thanks for detailed response, but please make sure this is all contained in the revised MS.

Fig 2, 3 replace "the grey shade" with "the grey shaded area..." . Same for "orange shade"