2026-09-21T08:08:25Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/129640 2026-02-10 col_2142_5131 col_2142_14770 com_2142_5130 com_2142_3518 com_2142_234

application/pdf en text Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-05-01 The student, Erick Kevin Claros Chagua, accepted the attached license on 2025-05-07 at 09:48. The student, Erick Kevin Claros Chagua, submitted this Thesis for approval on 2025-05-07 at 10:01. This Thesis was approved for publication on 2025-05-07 at 13:52. DSpace SAF Submission Ingestion Package generated from Vireo submission #22245 on 2025-10-19 at 19:17:12 Using a convection-permitting model for precipitation recycling analysis: A study over South America Claros Chagua, Erick Kevin 2025-05-07 Dominguez, Francina Schmidt, Arthur R. Convection-permitting Models Precipitation Recycling South America eng Convection-permitting models (CPMs) have demonstrated improved representation of precipitation compared to non-CPMs. Therefore, more accurate estimates of precipitation recycling and moisture contributions can reasonably be expected as well. Using a one-year WRF-WVT simulation over the Amazon Basin, we show that substantial differences arise between CPM and non-CPM recycling estimates. Notably, the CPM shows a recycling ratio over the Central Andes near 50 %, a feature not captured by the non-CPM. However, the high computational cost of CPMs makes them impractical for climate-scale recycling studies. To address this, we present a revised version of the 2L-DRM, which replicates the WRF-WVT's estimates at a fraction of the computational cost and can be applied to conventional CPM outputs, currently available for several continents. Using this model, we perform a simulation (2000-2021) over South America, considering 15 continental and 4 oceanic source regions, and estimate for each continental region the fraction of precipitation originating as evaporation from these sources. 2025-05 Text https://hdl.handle.net/2142/129640 Copyright 2025 Erick Kevin Claros Chagua Civil & Environmental Eng Civil Engineering University of Illinois Urbana-Champaign M.S. Thesis