Evaporation Driven by Atmospheric Boundary Layer Processes over a Shallow Saltwater Lagoon in the Altiplano

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dc.contributor.authorAguirre-Correa, Francisca
dc.contributor.authorDe Arellano, Jordi Vila-Guerau
dc.contributor.authorRonda, Reinder
dc.contributor.authorLobos-Roco, Felipe
dc.contributor.authorSuarez, Francisco
dc.contributor.authorHartogensis, Oscar
dc.date.accessioned2025-01-20T16:12:02Z
dc.date.available2025-01-20T16:12:02Z
dc.date.issued2024
dc.description.abstractObservations over a saltwater lagoon in the Altiplano show that evaporation E is triggered at noon, concurrent to the transition of a shallow, stable atmospheric boundary layer (ABL) into a deep mixed layer. We investigate the coupling between the ABL and E drivers using a land-atmosphere conceptual model, observations, and a regional model. Additionally, we analyze the ABL interaction with the aerodynamic and radiative components of evaporation using the Penman equation adapted to saltwater. Our results demonstrate that nonlocal processes are dominant in driving E. In the morning, the ABL is controlled by the local advection of warm air (similar to 5 K h(-1)), which results in a shallow (<350 m), stable ABL, with virtually no mixing and no E (<50 W m(-2)). The warm-air advection ultimately connects the ABL with the residual layer above, increasing the ABL height h by similar to 1 km. At midday, a thermally driven regional flow arrives to the lagoon, which first advects a deeper ABL from the surrounding desert (similar to 1500 m h(-1)) that leads to an extra similar to 700-m h increase. The regional flow also causes an increase in wind (similar to 12 m s(-1)) and an ABL collapse due to the entrance of cold air (similar to-2 K h(-1)) with a shallower ABL (similar to-350 m h(-1)). The turbulence produced by the wind decreases the aerodynamic resistance and mixes the water body releasing the energy previously stored in the lake. The ABL feedback on E through vapor pressure enables high evaporation values (similar to 450 W m(-2) at 1430 LT). These results contribute to the understanding of E of water bodies in semiarid conditions and emphasize the importance of understanding ABL processes when describing evaporation drivers.
dc.fuente.origenWOS
dc.identifier.doi10.1175/JHM-D-23-0105.1
dc.identifier.eissn1525-7541
dc.identifier.issn1525-755X
dc.identifier.urihttps://doi.org/10.1175/JHM-D-23-0105.1
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90309
dc.identifier.wosidWOS:001280067500001
dc.issue.numero8
dc.language.isoen
dc.pagina.final1134
dc.pagina.inicio1113
dc.revistaJournal of hydrometeorology
dc.rightsacceso restringido
dc.subjectEvaporation
dc.subjectAtmosphere-land interaction
dc.subjectAdvection
dc.subjectComplex terrain
dc.subjectSalinity
dc.subject.ods11 Sustainable Cities and Communities
dc.subject.ods13 Climate Action
dc.subject.odspa11 Ciudades y comunidades sostenibles
dc.subject.odspa13 Acción por el clima
dc.titleEvaporation Driven by Atmospheric Boundary Layer Processes over a Shallow Saltwater Lagoon in the Altiplano
dc.typeartículo
dc.volumen25
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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