In order to provide an uncertainty estimate for short-term wind power predictions the accuracy of the underlying wind speed prediction is assessed quantitatively for different meteorological situations. With methods from synoptic climatology an automatic classification scheme is implemented using measurements of wind speed, wind direction and pressure at mean sea level to characterize the local...

This study explores a domain-filling trajectory approach to generate a global ozone climatology from relatively sparse ozonesonde data. Global ozone soundings comprising 51 898 profiles at 116 stations over 44 yr (1965–2008) are used, from which forward and backward trajectories are calculated from meteorological reanalysis data to map ozone measurements to other locations and so fill in the sp...

Available research has extensively examined the spatiotemporal patterns of fire-weather regime in Portugal, but a comprehensive climatology extreme wildfires is still under development. This study calls for different strategies and scales analysis aiming to describe relationships between medium low troposphere weather conditions severe fire behaviour mainland 1980 2018. In particular, critical ...

An invasive forest pathogen, Cronartium ribicola, white pine blister rust (WPBR), is believed to have arrived in the Sacramento Mountains of south-central New Mexico about 1970. Epidemiological and genetic evidence supports the hypothesis that introduction was the result of long-distance dispersal (LDD) by atmospheric transport from California. This study applies a method to identify the atmosp...

Dramatic lowering of the humidity at the surface was observed at Canberra Airport and at Port Lincoln Airport AWS respectively during two recent Australian extreme fire weather events, that of the Canberra fires of 18 January 2003, and that of the lower Eyre Peninsula fires of 11 January 2005. These events have been described in more detail in Mills (2005a) and in a companion paper (Mills 2008)...

5 Multiscale analysis is used to derive two sets of coupled models, each based on the same distinguished limit, to represent the interaction of the midlatitude oceanic synoptic scale — where coherent features such as jets and rings form — and the mesoscale, defined by the internal deformation scale. The synoptic scale and mesoscale overlap at low and mid latitudes, and are hence synonymous in m...

Synoptic eddy–mean flow interaction has been recognized as one of the key sources for extratropical lowfrequency variability. In this paper, the underlying dynamics of this interaction are examined from the perspective of a synoptic eddy-induced dynamic instability. To delineate this instability, a barotropic model is used that is linearized with respect to a stochastic basic flow prescribed wi...

Marine low clouds are one of the greatest sources uncertainty for climate projection. We present an observed climatology cloud albedo susceptibility to droplet number concentration perturbations (S0) with changing sea surface temperature (SST) and estimated inversion strength single-layer warm over North Atlantic Ocean, using eight years satellite reanalysis data. The key findings that SST has ...