IDRA Processed Data
Delft University of Technology (DUT)
Polarimetric weather radar observables without a separation of the forward-scattering and backward-scattering effects.
J. Figueras i Ventura, Design of a High Resolution X-band Doppler Polarimetric Radar, PhD Thesis, TU Delft, 2009. @ http://repository.tudelft.nl/view/ir/uuid%3Ad90b9ad6-237b-435d-9dc5-5660d9e7fbdd/
CF-1.4
CESAR observatory, the Netherlands
Ground-based polarimetric weather radar.
http://ftp.tudelft.nl/TUDelft/irctr-rse/idra/
time
IDRA processed data
This dataset contains X-band (central frequency of 9.475 GHz) weather radar measurements from the TU Delft IRCTR drizzle radar IDRA. It includes plan-position indicators (PPI) of all polarimetric weather radar observables. IDRA is mounted at the top of the Cabauw tower at 213 m agl. It is scanning horizontally at a fixed low elevation angle, rotating with one round per minute, and covering, depending on the setting, a slant range of 1.5 km, 15 km or 60 km with a range resolution of 3 m or 30 m. IDRA thus provides the horizontally spatial distribution of precipitation over the CESAR observatory.
onGoing
dataset
http://data.3tu.nl/repository/collection:cabauw
website
5f3bcaa2-a456-4a66-a67b-1eec928cae6d
climatologyMeteorologyAtmosphere
Radar, Reflectivity, Differential Reflectivity, Linear Depolarisation Ratio, Doppler Velocity, Doppler Spectrum Width, Differential Phase, Precipitation
4.707
5.145
51.835
52.105
2008-06-26,onGoing
2009-10-19
publication
Processed weather radar measurements at linear horizontal / vertical polarisation basis of IDRA. The observables included are reflectivity, differential reflectivity, linear depolarisation ratio, Doppler velocity, Doppler spectrum width, and differential phase. The forward-scattering and backward-scattering effects are not separated, i.e. the data are not corrected for attenuation.
28992
EPSG
CESAR data policy (www.cesar-database.nl)
scientific
Delft University of Technology (DUT)
t.otto@tudelft.nl
Principle Investigator
Delft University of Technology (DUT)
Principle Investigator
t.otto@tudelft.nl
http://rse.ewi.tudelft.nl/
2010-05-27
creation
eng
ISO-19115
Nederlands profiel op ISO 19115 voor geografie, v1.2
1
scalar
2016-05-08T04:00:03Z
2016-05-08T07:59:59Z
IDRA_dataset_description_document.pdf
1.0
netCDF,3.6.2
Otto T., DUT
2010-05-27
1
scalar
CESAR observatory
51.97
4.926
-0.7
06348
Zijdeweg 1
3411 MH
Lopik
Utrecht
the Netherlands
1
scalar
time
hours since 2016-05-08 00:00:00
T
range
non-fixed
m
Slant range (meter) to the leading edge of the range bins. The radial extension of the range bins is provided by the variable <range_resolution>.
co-polarised equivalent reflectivity factor at horizontal polarisation
dBZ
Co-polarised equivalent reflectivity factor at horizontal polarisation in logarithmic units (dBZ, normalised to 1 mm6 m-3).
-999.0
differential reflectivity
dB
Logarithmic ratio of the co-polarised equivalent reflectivity factor at horizontal polarisation and the co-polarised equivalent reflectivity factor at vertical polarisation.
-999.0
linear depolarisation ratio
dB
Logarithmic ratio of the cross-polarised and the co-polarised channel for transmitted horizontal polarisation.
-999.0
radial Doppler velocitiy for transmitted horizontal polarisation
ms-1
Radial Doppler velocity estimated from the Doppler phase shift on a sweep to sweep basis.
-999.0
spectrum width
ms-1
Spectrum width for horizontal polarisation transmitted.
-999.0
Differential phase between the co-polarised echoes at horizontal and vertical polarisation.
rad
Spectral estimation of the differential phase between the co-polarised echoes at horizontal and vertical polarisation.
-999.0
azimuth
rad
The azimuth (radian) is measured clockwise from the Geographic North Pole.
-999.0
quicklook
Classification of the data in one minute intervals: 1 - no rain, 2 - weak rain, 3 - moderate rain, 4 - strong rain
range resolution
m
Radial extension (meter) of one range bin.
central radiation wavelength
m
Central radiation wavelength (meter).
frequency excursion
s-1
Frequency excursion of the transmitted linear up-chirp.
sweep time
us
Sweep time (microseconds) of the transmitted linear up-chirp.
false
transmitted power
W
sample size
Number of sweeps that are averaged for the calculation of one profile.
antenna beam-width
rad
Half-power beam-width of the transmit and receive antennas (radian). The beam-width determines the resolution in azimuth and elevation.
elevation
rad
The elevation (radian) is measured from the horizon (0 rad) upwards.