A Sea Breeze Study during Ticosonde-NAME 2004 in the Central Pacific of Costa Rica: Observations and Numerical Modeling
artículo original
Fecha
2020Autor
Mora Sandí, Natali Pamela
Amador Astúa, Jorge Alberto
Rivera Fernández, Erick
Maldonado Mora, Tito José
Metadatos
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Surface and upper air observations and MM5v3 simulations examined the structure and
inland penetration of sea breeze (SB) along the Grande de Tárcoles river basin (GTRB), central Pacific,
Costa Rica, for two different intensity regimes of the Caribbean Low-Level Jet (CLLJ). Data comprise
the period of 1 July to 16 September 2004 from Ticosonde-North American Monsoon Experiment,
and a local University of Costa Rica-National Meteorological Institute field campaign. Maximum
precipitation occurs between 14:00–17:00 LST, showing a time lag of 2 to 3 h after the temperature
maximum, suggesting that local diurnal heating is key to convection. July–August precipitation
exhibited a rainfall decrease along GTRB due to the SB dynamical processes interaction with a strong
CLLJ. The SB maximum inland incursion was 24 km, with no evidence of its penetration into the
Central Valley. The MM5v3 simulations for two convective and boundary layer (BL) schemes captured
some SB structure features along the GTRB. Comparison of model results with observed data shows
deficiencies in the model representation of the surface flow near coastal regions. Differences may
be the result of time lag model’s poor responses to actual early morning BL sea–land temperature
gradients. MM5v3 configurations used in this study resulted in biased wind speed simulations.
External link to the item
10.3390/atmos11121333Colecciones
- Meteorología [501]