Multi-scale Transport Processes Observed in the Boundary Layer over a Mountainous Island

Characteristics and evolution of diurnal foehn events in the Dead Sea valley

“…The results confirmed the findings from earlier studies (e.g. Bitan, 1974;Alpert et al, 1982;Naor et al, 2017) that throughout the year, foehn evolves in the evening around sunset. The new results reveal a higher occurrence frequency at the slopes than at the valley floor, indicating that the foehn penetrates downslope most of the days, but does not reach the valley floor on all occasions.…”

Characteristics and evolution of diurnal foehn events in the Dead Sea valley

“…The results confirmed the findings from earlier studies (e.g. Bitan, 1974;Alpert et al, 1982;Naor et al, 2017) that throughout the year, foehn evolves in the evening around sunset. The new results reveal a higher occurrence frequency at the slopes than at the valley floor, indicating that the foehn penetrates downslope most of the days, but does not reach the valley floor on all occasions.…”

The impact of embedded valleys on daytime pollution transport over a mountain range

“…The embedded valleys used in the present simulations are bordered by two mountain ridges of different crest heights. This is in line with a case study of transport processes in a valley with similar asymmetric crest heights (Adler and Kalthoff, 2014) and extends recent idealized simulations of Wagner et al (2014aWagner et al ( , b, 2015 to account for a typical geometric feature of real terrain. Simulations for valleys with different depths are performed and compared to a single-ridge topography to quantify the impact of varying valley floor heights on different transport processes of pollutants over complex terrain, e.g., mountain venting and return flows in the free atmosphere.…”

The variability of water vapour and pre‐convective conditions over the mountainous island of Corsica

“…The moistening probably resulted from the arrival of the sea‐breeze front at Corte. The sea breeze typically propagates inland from the east coast along the axis of the Tavignano Valley and supplements the upvalley wind (Adler and Kalthoff, ). In addition, water vapour density started to increase at around 3000 m amsl after 1200 h. This rise was detected first in an elevated shallow layer and successively extended to lower layers during the next couple of hours, reaching more than 5 g m −3 .…”

Characteristics and evolution of diurnal foehn events in the Dead Sea valley

“…The results confirmed the findings from earlier studies (e.g. Bitan, 1974;Alpert et al, 1982;Naor et al, 2017) that throughout the year, foehn evolves in the evening around sunset. The new results reveal a higher occurrence frequency at the slopes than at the valley floor, indicating that the foehn penetrates downslope most of the days, but does not reach the valley floor on all occasions.…”

The impact of embedded valleys on daytime pollution transport over a mountain range

“…The embedded valleys used in the present simulations are bordered by two mountain ridges of different crest heights. This is in line with a case study of transport processes in a valley with similar asymmetric crest heights (Adler and Kalthoff, 2014) and extends recent idealized simulations of Wagner et al (2014aWagner et al ( , b, 2015 to account for a typical geometric feature of real terrain. Simulations for valleys with different depths are performed and compared to a single-ridge topography to quantify the impact of varying valley floor heights on different transport processes of pollutants over complex terrain, e.g., mountain venting and return flows in the free atmosphere.…”

The variability of water vapour and pre‐convective conditions over the mountainous island of Corsica

“…The moistening probably resulted from the arrival of the sea‐breeze front at Corte. The sea breeze typically propagates inland from the east coast along the axis of the Tavignano Valley and supplements the upvalley wind (Adler and Kalthoff, ). In addition, water vapour density started to increase at around 3000 m amsl after 1200 h. This rise was detected first in an elevated shallow layer and successively extended to lower layers during the next couple of hours, reaching more than 5 g m −3 .…”

Characteristics and evolution of diurnal foehn events in the Dead Sea valley

“…The results confirmed the findings from earlier studies (e.g. Bitan, 1974;Alpert et al, 1982;Naor et al, 2017) that throughout the year, foehn evolves in the evening around sunset. The new results reveal a higher occurrence frequency at the slopes than at the valley floor, indicating that the foehn penetrates downslope most of the days, but does not reach the valley floor on all occasions.…”

The impact of embedded valleys on daytime pollution transport over a mountain range

“…The embedded valleys used in the present simulations are bordered by two mountain ridges of different crest heights. This is in line with a case study of transport processes in a valley with similar asymmetric crest heights (Adler and Kalthoff, 2014) and extends recent idealized simulations of Wagner et al (2014aWagner et al ( , b, 2015 to account for a typical geometric feature of real terrain. Simulations for valleys with different depths are performed and compared to a single-ridge topography to quantify the impact of varying valley floor heights on different transport processes of pollutants over complex terrain, e.g., mountain venting and return flows in the free atmosphere.…”

The variability of water vapour and pre‐convective conditions over the mountainous island of Corsica

“…The moistening probably resulted from the arrival of the sea‐breeze front at Corte. The sea breeze typically propagates inland from the east coast along the axis of the Tavignano Valley and supplements the upvalley wind (Adler and Kalthoff, ). In addition, water vapour density started to increase at around 3000 m amsl after 1200 h. This rise was detected first in an elevated shallow layer and successively extended to lower layers during the next couple of hours, reaching more than 5 g m −3 .…”