Evaluate the collective function of references cited together in a given text segment.
Classify their combined role into one of the following categories: 'method', 'background', or 'result'.

Text:To support regional applications, ALEXI couples The Two-Source Energy Balance (TSEB) model [4] with an atmospheric boundary layer (ABL) model to simulate changes in near surface air temperature (Ta) that are consistent with TSEB modeled surface fluxes[2,3].
Category: