High-resolution Eta Model simulations of a strong but relatively dry late winter surface cold front that occurred during the STORM-FEST project depicted a pronounced acceleration of the front during the afternoon hours over the southern end of Lake Michigan. In this note, the impact of the lake on the front is examined. Reduced lower atmosphere turbulence due to both thermal stabilization and d...

The up-down asymmetry of the type I plasma waves in the equatorial electrojet region during daytime is investigated. It is shown that the asymmetry is exhibited not only in the vertical direction but also is manifested in the oblique direction (24.6° o€ zenith). The results further indicate the e€ect of neutral winds on the phase velocities of type I plasma waves.

[1] Positive Indian Ocean Dipole (IOD) events generally tend to be accompanied by intensified summer monsoon flows and above normal precipitation over the subcontinent; although strong monsoons have not always coincided with positive IOD events. Numerical simulation experiments and supplementary data diagnostics are performed to understand the IOD sub-surface dynamics in relation to the monsoon...

Within the project EUropean Studies on Trace gases and Atmospheric CHemistry as a contribution to Large-scale Biosphere-atmosphere experiment in Amazonia (LBA-EUSTACH), we performed tower-based eddy covariance measurements of O3 flux above an Amazonian primary rain forest at the end of the wet and dry season. Ozone deposition revealed distinct seasonal differences in the magnitude and diel vari...

The restoration of fire-affected forest areas needs to be combined with their future protection from renewed catastrophic fires, such as those that occurred in Greece during the 2007 summer season. The present work demonstrates that the use of various sources of satellite data in conjunction with weather forecast information is capable of providing valuable information for the characterization ...

The atmospheric conditions that lead to strong offshore surface winds in Southern California, commonly referred to as Santa Ana winds, are investigated using the North American Regional Reanalysis and a 12-year, 6-km resolution regional climate simulation of Southern California. We first construct an index to characterize Santa Ana events based on offshore wind strength. This index is then used...

Ionospheric F-region electron density is anomalously higher in the evening than during daytime on many occasions summer geomagnetic mid-latitude regions. This unexpected ionospheric diurnal variation has been studied for several decades. The underlying processes have suggested to be related meridional winds, topside influx arising from sunset collapse, and other factors. However, substantial co...