The katabatic wind system over the Greenland ice sheet is studied using simulations of the hydrostatic Norwegian Limited Area Model (NORLAM) and measurements of an instrumented aircraft. The structure and the dynamics of the katabatic wind over the ice sheet are investigated for a case study of the aircraft-based experiment KABEG (Katabatic wind and boundary layer front experiment around Greenl...

[1] Patterns of ocean current variability are examined on the West Florida Shelf by a neural network analysis based on the self-organizing map (SOM), using time series of moored velocity data that span the interval October 1998–September 2001. Three characteristic spatial patterns are extracted in a 3 4 SOM array: spatially coherent southeastward and northwestward flow patterns with strong curr...

High-amplitude ridges can enforce heat-trapping systems that persist through an entire season, contributing to drought events. However, the impacts of day-to-day weather system changes at meso- and synoptic-scale are also important, albeit less well studied. We identify five types (WTs) from 500-hPa geopotential height anomalies. These categories include WT4, which represents associated dry war...

This study documents the preferred location and diurnal cycle of extreme convective storms that occur in the tropical band containing the east Pacific Ocean, Central and South America, the Atlantic Ocean, and northern Africa. Data from the Tropical Rainfall Measuring Mission (TRMM) Precipitation Radar show three types of convective-stratiform structures that constitute extreme convective events...

Abstract. Wildfires cause substantial losses to socio-economic and natural assets, especially in Mediterranean climate regions. Despite human activity being the main of wildfires European countries, lightning-ignited should also be considered a major disruptive agent as they can trigger large fires. In addition, recent studies on potential change effects pointed out that may gain relevance area...

abstract in recent years, dust storm in western part of iran, especially fars province, caused various problems for people. the aim of this research is the identification of circulation patterns producing dust storms over fars province. for this purpose, firstly the code number 6 of current weather at 12 gmt belongs to 8 synoptic stations during the statistical period of 1992-2003 has been extr...