Version:2.4.1
NumericalData
ResourceID
spase://CNES/NumericalData/CDPP-AMDA/Cassini/RPWS/cass-lp-ni
ResourceHeader
ResourceName
ion proxy
AlternateName
Langmuir Probe : ion density proxy
ReleaseDate
2017-10-06 14:23:53Z
Description
Densities are derived from the voltage sweeps of the Cassini Langmuir probe. The data reduction method is described in detail in Holmberg et al. 2012 and Holmberg et al. 2017.
The Cassini RPWS/LP data are available at the University of Iowa and the Swedish Institute of Space Physics. The Swedish National Space Board (SNSB) supports the RPWS/LP instrument on board Cassini.
Contacts
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
CDPP/AMDA HAPI Server
URL
Style
HAPI
Description
Web Service to this product using the HAPI interface.
Format
CSV
Acknowledgement
Thank you for acknowledging the use of AMDA in publications with wording like "Data analysis was performed with the AMDA science analysis system provided by the Centre de Données de la Physique des Plasmas (CDPP) supported by CNRS, CNES, Observatoire de Paris and Université Paul Sabatier, Toulouse".. See the Rules of the road at http://amda.cdpp.eu/help/policy.html. Please acknowledge the Data Providers.
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
CDPP/AMDA Web application
URL
Description
Access to Data via CDPP/AMDA Web application.
Format
CSV
Format
VOTable
Format
CDF
Format
PNG
Acknowledgement
Thank you for acknowledging the use of AMDA in publications with wording like "Data analysis was performed with the AMDA science analysis system provided by the Centre de Données de la Physique des Plasmas (CDPP) supported by CNRS, CNES, Observatoire de Paris and Université Paul Sabatier, Toulouse".. See the Rules of the road at http://amda.cdpp.eu/help/policy.html. Please acknowledge the Data Providers.
ProviderName
IRAP
InstrumentIDs
MeasurementType
ThermalPlasma
TemporalDescription
TimeSpan
StartDate
2005-02-16 05:10:50Z
StopDate
2016-06-29 19:36:05Z
CadenceMin
PT24S
CadenceMax
PT1H
ObservedRegion
Saturn
Caveats
Problems that are still present in the data set:
* Possible ring eclipse cases (very rare),
* measurements within interchange injections (commonly seen as one point with densities 10 times larger than it’s surrounding data points (very rare)),
* spacecraft wake measurements that have not properly been removed (rare),
* moon eclipses (very rare).
Each data point corresponds to one voltage sweep. Occasionally the fit to the sweep is not very good. Usually a data point with an error 3 times the estimated value or larger is considered a bad data point, but this has to be evaluated from case to case. A good way to do this is to compare with the electron density derived from the upper hybrid resonance frequency or with the ion density obtained from CAPS measurements. The data can also be compared to previous measurements from the same region which should show similar densities.
Note that data is very irregular.
Parameter #1
Name
ion density
ParameterKey
cass_lp_ni
Units
cm-3
RenderingHints
Particle
ParticleType
Ion
ParticleQuantity
NumberDensity
Parameter #2
Name
ion density error
ParameterKey
cass_lp_ni_err
Units
%
RenderingHints
Support