


In response to these calls, the Surface Atmosphere Integrated Field Laboratory (SAIL) will make measurements using the second ARM Mobile Facility (AMF2) and a scanning X-band dual polarimetric radar near Crested Butte, Colorado. The mountain hydrometeorology community has repeatedly called for integrated atmospheric and surface observations of water and energy budgets in complex terrain that span these scales to establish benchmarks against which scale-dependent models can be developed.

Further complications arise from the gross scale mismatch between ESM grid box sizes and the relevant scales of mountainous hydrological processes. The source(s) of model error are difficult to isolate in complex terrain with limited atmospheric or land-surface observations. Mountains are the natural water towers of the world, but Earth System Models (ESMs) have persistently been unable to predict the timing and availability of water resources from mountains. Surface Atmosphere Integrated Field Laboratory (SAIL) 1 September 2021 - 15 June 2023 Lead Scientist: Daniel Feldman Observatory: amf,
