Characterization of auroral current systems in Saturn's magnetosphere: High-latitude Cassini observations

2009 ◽  
Vol 114 (A6) ◽  
pp. n/a-n/a ◽  
Author(s):  
D. L. Talboys ◽  
C. S. Arridge ◽  
E. J. Bunce ◽  
A. J. Coates ◽  
S. W. H. Cowley ◽  
...  
Keyword(s):  
High Latitude ◽  
Auroral Current ◽  
Current Systems

High latitude equivalent current systems during extremely quiet times

1974 ◽  
Vol 22 (3) ◽  
pp. 427-437 ◽  
Author(s):  
G. Rostoker ◽  
A.J. Chen ◽  
F. Yasuhara ◽  
S.-I. Akasofu ◽  
K. Kawasaki
Keyword(s):  
High Latitude ◽  
Equivalent Current ◽  
Current Systems

Characterization of eclipsing binaries in High Latitude Field 356

New Astronomy ◽  
2019 ◽  
Vol 67 ◽  
pp. 53-66
Author(s):  
Derck P. Smits ◽  
P.L. Skelton
Keyword(s):  
High Latitude ◽  
Eclipsing Binaries

scholarly journals Characterization of high-latitude ionospheric scintillation of GPS signals

Radio Science ◽  
2013 ◽  
Vol 48 (6) ◽  
pp. 698-708 ◽  
Author(s):  
Yu Jiao ◽  
Yu T. Morton ◽  
Steven Taylor ◽  
Wouter Pelgrum
Keyword(s):  
High Latitude ◽  
Ionospheric Scintillation

scholarly journals Comparisons between ground-based FTIR and MIPAS N<sub>2</sub>O and HNO<sub>3</sub> profiles before and after assimilation in BASCOE

2006 ◽  
Vol 6 (5) ◽  
pp. 8335-8382
Author(s):  
C. Vigouroux ◽  
M. De Mazière ◽  
Q. Errera ◽  
E. Mahieu ◽  
P. Duchatelet ◽  
...  
Keyword(s):  
Standard Deviation ◽  
High Latitude ◽  
Atmospheric Composition ◽  
Upper Troposphere ◽  
Before And After ◽  
Standard Deviations ◽  
Data Assimilation System ◽  
Good Agreement ◽  
Middle Stratosphere

Abstract. Within the framework of the Network for Detection of Atmospheric Composition Change (NDACC), regular ground-based Fourier transform infrared (FTIR) measurements of many species are performed at several locations. Inversion schemes provide vertical profile information and characterization of the retrieved products which are therefore relevant for contributing to the validation of MIPAS profiles in the stratosphere and upper troposphere. We have focused on the species HNO3 and N2O at 5 NDACC-sites distributed in both hemispheres, i.e., Jungfraujoch (46.5° N) and Kiruna (68° N) for the northern hemisphere, and Wollongong (34° S), Lauder (45° S) and Arrival Heights (78° S) for the southern hemisphere. These ground-based data have been compared with MIPAS offline profiles (v4.61) for the year 2003, collocated within 1000 km around the stations, in the lower to middle stratosphere. To get around the spatial collocation problem, comparisons have also been made between the same ground-based FTIR data and the corresponding profiles resulting from the stratospheric 4D-VAR data assimilation system BASCOE. This paper discusses the results of the comparisons and the usefullness of using BASCOE profiles as proxies for MIPAS data. It shows good agreement between MIPAS and FTIR N2O partial columns: the biases are below 5% for all the stations and the standard deviations are below 7% for the three mid-latitude stations, and below 10% for the high latitude ones. The comparisons with BASCOE partial columns give standard deviations below 4% for the mid-latitude stations to less than 8% for the high-latitude ones. After making some corrections to take into account the known bias due to the use of different spectroscopic parameters, the comparisons of HNO3 partial columns show biases below 3% and standard deviations below 15% for all the stations except Arrival Heights (bias of 6%, standard deviation of 21%). The results for this species, which has a larger spatial variability, highlight the necessity of defining appropriate collocation criteria and of accounting for the spread of the observed airmasses. BASCOE appears to have more deficiencies in producing proxies of MIPAS HNO3 profiles compared to N2O, but the obtained standard deviation of less than 10% between BASCOE and FTIR is reasonable. Similar results on profiles comparisons are also shown in the paper, in addition to partial column ones.

scholarly journals A New Integrated High-Latitude Thermal Laboratory for the Characterization of Land Surface Processes in Alaska’s Arctic and Boreal Regions

Data ◽  
2016 ◽  
Vol 1 (2) ◽  
pp. 13 ◽  
Author(s):  
Jordi Cristóbal ◽  
Patrick Graham ◽  
Marcel Buchhorn ◽  
Anupma Prakash
Keyword(s):  
High Latitude ◽  
Land Surface ◽  
Surface Processes ◽  
Land Surface Processes
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