https://www.preprints.org/manuscript/202307.0331/v1
*Authors* Luis Figueroa-Villanueva , Lina Castro , Tomás R. Bolaño-Ortiz , Raúl P. Flores ORCID logoDiego Pacheco ORCID logo , Francisco Cereceda-Balic Version 1 : Received: 4 July 2023 / Approved: 5 July 2023 / *Online: 5 July 2023* How to cite: Figueroa-Villanueva, L.; Castro, L.; Bolaño-Ortiz, T.R.; Flores, R.P.; Pacheco, D.; Cereceda-Balic, F. Changes in Snow Surface Albedo and Radiative Forcing in the Chilean Central Andes Measured by In-Situ and Remote Sensing Data. *Preprints.org* *2023*, 2023070331. https://doi.org/10.20944/preprints202307.0331.v1 Abstract Snow-covered regions are the main source of reflection of incident shortwave radiation (ISR) on Earth’s surface. The deposition of light-absorbing particles (LAPs) on these regions increases the capacity of snow to absorb ISR and decreases surface snow albedo (SSA), which intensifies the radiative forcing leading to accelerated snowmelt and modifications of the hydrologic cycle. In this work we investigate changes in SSA and radiative forcing (RF) induced by LAPs in the Upper Aconcagua River Basin (Chilean central Andes) using remote sensing satellite data (MODIS), in-situ spectral SSA measurements, and the ISR (Chilean Solar Explorer platform) during the austral-winter months (May to August) for the 2004-2016 period. To estimate the changes in SSA and RF, we define two spectral ranges: i) an enclosed range (Ecr) between 841-876 nm, which isolates effects of Black-Carbon, an important LAP derived from anthropogenic activities, and ii) a broadband range (Bbr) between 300-2500 nm. Our results show that percent variations in SSA in the Ecr are higher than in the Bbr, regardless of the total amount of radiation received, which may be attributed to the presence of LAPs as these particles have a greater impact on SSA at wavelengths in the Ecr band than in the Bbr band. Keywords Snow surface albedo, Radiative Forcing, Light-absorbing particles in snow, remote sensing, Black Carbon, Chilean Central Andes Mountains. *Source: Preprints.org* -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/geoengineering/CAHJsh99Dz-xfCZ-P7ASbU6FiMP%2Bs51An0Bosi7RQ95k%2BhYj68A%40mail.gmail.com.
