Version:2.5.0
NumericalData
ResourceID
spase://IUGONET/NumericalData/RISH/CHAMP/CHAMP/GPSreceiver/champ_gpsreceiver_fsi_netcdf
ResourceHeader
ResourceName
CHAMP full spectrum inversion (FSI) data (netCDF)
ReleaseDate
2016-11-17 23:00:00
Description
The archived GPS-RO data have been calculated applying full spectrum inversion (FSI) [Jensen et al., 2003] method to CHAMP GPS-RO profiles in an altitude from ground level up to 30 km. The original CHAMP GPS-RO profiles are open on the UCAR webpage (http://cdaac-www.cosmic.ucar.edu/cdaac/products.html#champ). The height resolution of archived data is 0.1 km and we averaged the original RISHANA data (refractivity, pressure, temperature, and tangential point of latitude and longitude) included in a bin of +/-0.05 km for nominal height. The available data format is netCDF, and each netCDF file contains physical parameters such as dry pressure, dry temperature, refractivity, bending angle, impact parameter, etc as a function of mean sea level altitude of perigee point. File names of netCDF data are composed of RISHANA_YYYY.DDD.nc. YYYY and DDD indicates year and day of year, respectively. If you want to know details of data description and FSI, please refer to the paper [Tsuda, T, X. Lin, H. Hayashi, and Noersomadi, Analysis of vertical wave number spectrum of atmospheric gravity waves in the stratosphere using COSMIC GPS radio occultation data, Atmos. Meas. Tech., 4, 1627 - 1636, doi:10.5194/amt-4-1627-2011, 2011].
Acknowledgement
If you acquire GPS radio occultation CHAMP FSI data, we ask that you acknowledge us in your use of the data. This may be done by including text such as GPS radio occultation CHAMP FSI data provided by Research Institute for Sustainable Humanosphere of Kyoto University. We would also appreciate receiving a copy of the relevant publications.
Contacts
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
CHAMP FSI data
URL
Language
English
Format
NetCDF
ProcessingLevel
Calibrated
ProviderProcessingLevel
Level2
ProviderVersion
champ2014
InstrumentIDs
MeasurementType
Profile
TemporalDescription
TimeSpan
StartDate
2001-05-18 22:02:00
StopDate
2008-10-05 23:59:59
ObservedRegion
Earth.NearSurface.Atmosphere
ObservedRegion
Earth.NearSurface.Stratosphere
ObservedRegion
Earth.NearSurface.Troposphere
SpatialCoverage
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
GEO
NorthernmostLatitude
90.0
SouthernmostLatitude
-90.0
EasternmostLongitude
180.0
WesternmostLongitude
-180.0
MinimumElevation
0.0
MaximumElevation
60.0
Keywords
EARTH SCIENCE Atmosphere Altitude Geopotential Height Hydrostatic Pressure Atmospheric Temperature Profiles
Parameter #1
Name
event
Description
GPS occultation event number.
Support
Parameter #2
Name
z
Description
Mean sea level altitude of perigee point at occultation point.
Units
km
Support
SupportQuantity
Positional
Parameter #3
Name
gpsid
Description
GPS satellite ID
Support
Parameter #4
Name
leoid
Description
LEO satelite ID
Support
Parameter #5
Name
time
Description
GPS time
Units
seconds since 1980-01-06 00:00:00.
Support
Parameter #6
Name
lat
Description
Latitude
Units
degree
ValidMin
-90.0
ValidMax
90.0
Support
SupportQuantity
Positional
Parameter #7
Name
lon
Description
Longitude
Units
degree
ValidMin
-180.0
ValidMax
180.0
Support
SupportQuantity
Positional
Parameter #8
Name
ref
Description
Refractivity
Units
N
ValidMin
0.0
ValidMax
9999.0
FillValue
-999.0
Support
Parameter #9
Name
pres
Description
Dry air pressure
Units
mb
ValidMin
0.0
ValidMax
1500.0
FillValue
-999.0
Support
Parameter #10
Name
temp
Description
Dry air temperature
Units
degree C
ValidMin
-200
ValidMax
100
FillValue
-999.0
Support
Parameter #11
Name
tan_lat
Description
Latitude of perigee point at occultation point
Units
degree
ValidMin
-90.0
ValidMax
90.0
FillValue
-999.0
Support
SupportQuantity
Positional
Parameter #12
Name
tan_lon
Description
Longitude of perigee point at occultation point
Units
degree
ValidMin
-180.0
ValidMax
180.0
FillValue
-999.0
Support
SupportQuantity
Positional