The authors present a new analytical solution for modelling flow between a subsurface-well system caused by harmonic atmospheric loading. They integrate this into a comprehensive workflow that also estimates subsurface properties using a well-established Earth tide method. The method is applied to two wells in Australia to estimate hydraulics parameters and compare with the results calculated in the literature. The details could be found in the attached .pdf file.

Overall, the manuscript is well written. The authors porposaed "mean stress solution" by introducing Biot's consolidation theory to estimate the groundwater fluctuation due to tidal loading.

I have the following comments for the authors consider in the revision:

(1)  Line 110, it is state "Biot's consolidation theory assume \varepsion =0 when undrained condition. Why? please add reference.

(2) Line 114:  The assumption "exp(iwt)" implies only the first-order approximation is adopted. This requires justification.

(3)  The asusmption  of "Mean stress" needs justification.

(4) In this note, only tow borehole data are used.  As shown in Figure 5(c), two data point is obviously insufficient. The authors may need to add more data points.