Seasonal variations in the horizontal wind structure from 0-100 km above Rothera station, Antarctica (67° S, 68° W)
نویسندگان
چکیده
منابع مشابه
Seasonal variations in the horizontal wind structure from 0 – 100 km above Rothera station , Antarctica ( 67 ◦ S , 68 ◦ W )
A medium frequency spaced-antenna radar has been operating at Rothera station, Antarctica (67 S, 68 W) for two periods, between 1997–1998 and since 2002, measuring winds in the mesosphere and lower thermosphere. In this paper monthly mean winds are derived and presented along with three years of radiosonde balloon data for comparison with the HWM-93 model atmosphere and other high latitude sout...
متن کاملThree-dimensional spatial structures of solar wind turbulence from 10 000-km to 100-km scales
Using the four Cluster spacecraft, we have determined the three-dimensional wave-vector spectra of fluctuating magnetic fields in the solar wind. Three different solar wind intervals of Cluster data are investigated for this purpose, representing three different spatial scales: 10 000 km, 1000 km, and 100 km. The spectra are determined using the wave telescope technique (k-filtering technique) ...
متن کاملSource region for whistlers detected at Rothera, Antarctica
[1] The accepted mechanism for whistler generation implicitly assumes that the causative lightning stroke occurs within reasonable proximity to the conjugate foot point of the guiding magnetic field line and that nighttime whistlers are prevalent because of low transionospheric attenuation. However, these assumptions are not necessarily valid. In this study we consider whistler observations fro...
متن کاملVariations on (0, s)-Sequences
In the first part of this paper, after a survey on the general theory of (t, s)-sequences, we review the main constructions of (0, s)-sequences and point out some relations between them. From these comparisons and from examples we have met in another context, we have found new (0,s)-sequences in prime base b to which the second part is devoted; the proofs are based on the general framework of f...
متن کاملSeasonal variations of accumulation and the isotope record in ice cores: a study with surface snow samples and firn cores from Neumayer station, Antarctica
At the German wintering base Neumayer, an intensive glacio-meteorologicalprogrammehasbeen carried out during the last two decades. A completemeteorological dataset and data from surface snow samples, snow pits, firn cores and weekly accumulation measurements from a stake array are available.We first investigated the attenuation of the seasonal ̄O signal due to water-vapour diffusion in the snow...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Atmospheric Chemistry and Physics
سال: 2005
ISSN: 1680-7324
DOI: 10.5194/acp-5-2973-2005