2.3.1
spase://CNES/NumericalData/CDPP-AMDA/Geotail/CPI/gtl-cpi-swa
SWA
Solar Wind Analyser
2019-05-05T12:34:56Z
The Solar Wind Analyzer (SWA) of the Comprehensive Plasma Instrumentation (CPI) on Geotail is a quadrispherical plasma analyzer
that measures three-dimensional fluxes of ions in the range 150-7,000 eV/Q.
Version 6 data processing replaced version 5 processing for data after March 10,
2006, when the CPI team started using 64 energy steps per spectrum instead of
the previously used 32 steps per spectrum. The change was made to ensure that
even for very cold flows, the spectrum would have a sufficient number of
significant points to derive moments. The change resulted in 96s spectra and
96s-resolution moments, vs. 48s previously.
CPI/SWEA and LEP measurement are expected to be used in a complementary way. LEP is highly sensitive and is dedicated to
measure tenuous plasma of the magnetosphere. However, when GEOTAIL is in the interplanetary, LEP generally scans only the
high energy (> 5 KeV) part of the ion distribution. This automated mode allows to assure long term preservation of the LEP
detectors. The LEP ion moments obtained in the inteerplanetary medium should be used only for qualitative purposes.
The ion moments in the interplanetary medium are provided by the CPI/SWEA instrument designed for
measuring the denser magnetosheath and solar wind plasma.
In any publications, the use of the Geotail data should be acknowledged
spase://SMWG/Person/Louis.A.Frank
PrincipalInvestigator
spase://SMWG/Person/William.R.Paterson
GeneralContact
spase://SMWG/Repository/CNES/CDPP-AMDA
Online
Open
AMDA at CDPP
http://amda.cdpp.eu
NetCDF
None
Data provider DARTS at Institute of Space and Astronautical Science, JAXA in Japan
CDAWeb
ge_h0_cpi
spase://CNES/Instrument/CDPP-AMDA/Geotail/CPI
EnergeticParticles
1992-09-28T00:00:02Z
2019-06-26T23:59:28Z
PT96S
Earth.Magnetosheath
Earth.Magnetosphere
Earth.Magnetosphere.Magnetotail
v_gse
gtl_cpi_swa_v
Ion bulk flow velocity (H+ only in solar wind) in GSE cartesian coordinates
km/s
Cartesian
GSE
TimeSeries
3
vx
Component.I
1
gtl_cpi_swa_v(0)
vy
Component.J
2
gtl_cpi_swa_v(1)
vz
Component.K
3
gtl_cpi_swa_v(2)
density
gtl_cpi_swa_n
Ion number density
Assuming no helium (0.3 - several hundred) if the density is less than 0.3/cc the higher moments (VEL,TEMP) shall not be used because of the poor counting statistics.
cm^-3
TimeSeries
temperature
gtl_cpi_swa_t
Ion average kinetic temperature
eV
TimeSeries