This manuscript described the structure and key physics of the coupled WRF-SUEWS system，and evaluated WRF-SUEWS at two UK sites and explored its application in modelling dynamics and impacts of anthropogenic heat emissions at the city scale. The topic is very interesting and has important implications in urban climate. However, there are major concerns which lead me to request a minor revision of this manuscript before publish.

The urban boundary layer fluctuates with weather scenario changes, especially for synoptic pattern. Synoptic patterns modulate local weather condition in boundary layer, e.g., SUEWS, boundary layer height, wind, RH and temperature, or even cloud. Therefore, the limitation and applicability of present coupled WRF-SUEWS system should be discussed, especially for some special synoptic patterns.

In addition, for clear sky, the role of AHR and land use and their impacts on local climate in the London should be compared with other regions.

Effects of anthropogenic heat release upon the urban climate in a Japanese megacity

A High-Resolution Monitoring Approach of Canopy Urban Heat Island using Random Forest Model and Multi-platform Observations

Simulating the Regional Impacts of Urbanization and Anthropogenic Heat Release on Climate across China

Modulation of wintertime canopy Urban Heat Island (CUHI) intensity in Beijing by synoptic weather pattern in planetary boundary layer

Moreover, the observed boundary layer height should be described detailly and the accuracy should be pointed out for model validation