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Pregled bibliografske jedinice broj: 767790

Časopis

Autori: Telišman Prtenjak, Maja; Horvat, Igor; Tomažić, Igor; Kvakić, Marko; Viher, Mladen; Grisogono, Branko
Naslov: Impact of mesoscale meteorological processes on anomalous radar propagation conditions over the northern Adriatic area
( Impact of mesoscale meteorological processes on anomalous radar propagation conditions over the northern Adriatic area )
Izvornik: Journal of Geophysical Research - Atmospheres (2169-8996) 120 (2015), 17; 8759-8782
Vrsta rada: članak
Ključne riječi: anaprop; bora wind; sea breeze; convection; modified refractive index; WRF model; mixing length
( anaprop; bora wind; sea breeze; convection; modified refractive index; WRF model; mixing length )
Sažetak:
he impact of mesoscale structures on the occurrence of anomalous propagation (AP) conditions for radio waves, including ducts, super refractive and subrefractive conditions were studied. The chosen meteorological situations are the bora wind and the sporadic sea/land breeze (SB/LB) during three selected cases over a large portion of the northern Adriatic. For this purpose, we used available radiosoundings and numerical mesoscale model simulations (of real cases and their sensitivity tests) at a horizontal resolution of 1.5 km and 81 vertical levels. The model simulated the occurrences of AP conditions satisfactorily, although their intensities and frequency were underestimated at times. Certain difficulties appeared in reproducing the vertical profile of the modified refractive index, which is mainly dependent on the accuracy of the modeled humidity. The spatial distributions of summer AP conditions reveal that the surface layer above the sea (roughly between 30 and 100 m asl) is often covered by super refractive conditions and ducts. The SB is highly associated with the formations of AP conditions: (i) in the first 100 m asl, where trapping and super refractive conditions form because of the advection of cold and moist air, and (ii) inside the transition layer between the SB body and the elevated return flow in the form of subrefractive conditions. When deep convection occurs, all three types of AP conditions are caused by the downdraft beneath the cumulonimbus cloud base in its mature phase that creates smaller but marked pools of cold and dry air. The bora wind usually creates a pattern of AP conditions associated with the hydraulic jump and influences distribution of AP conditions over the sea surface.
Projekt / tema: CATURBO (HRZZ 09/151)
Izvorni jezik: eng
Rad je indeksiran u
bazama podataka:
Current Contents Connect (CCC)
SCI-EXP, SSCI i/ili A&HCI
Kategorija: Znanstveni
Znanstvena područja:
Geologija
URL Internet adrese: http://onlinelibrary.wiley.com/doi/10.1002/2014JD022626/abstract
http://onlinelibrary.wiley.com/doi/10.1002/2014JD022626/full
Broj citata:
Altmetric:
DOI: 10.1002/2014JD022626
URL cjelovitog teksta:
Google Scholar: Impact of mesoscale meteorological processes on anomalous radar propagation conditions over the northern Adriatic area
Upisao u CROSBI: Maja Telišman Prtenjak (telisman@rudjer.irb.hr), 2. Srp. 2015. u 12:07 sati



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