Equatorial Atmosphere Radar (EAR)
Observation Data


(Version 02.0212)


Please note: If you acquire EAR data, we ask that you acknowledge us in your use of the data. This may be done by including text such as EAR data provided by Research Institute for Sustainable Humanosphere of Kyoto University. We would also appreciate receiving a copy of the relevant publications. Thank you!
This data has been registered in IUGONET (Inter-university Upper atmosphere Global Observation NETwork) metadata database. The IUGONET metadata database will be of great help to researchers in efficiently finding and obtaining ground-based observation data spread over the institutes/universities. Click and visit to the IUGONET website.

IUGONET also prepared the iUgonet Data Analysis Software (UDAS) for the upper atmospheric observation data. If you install the UDAS, you can easily access, download, visualize and analyze the MU radar observation data through the Internet. Please click and try to use the UDAS.

Notice: Old type of NetCDF data is here. CSV data is not changed.   (Mar 18, 2011)
Notice: In the header of NetCDF data, unit of time variable (time locale) was incorrect. Correct unit (locale) of time variable is "seconds since ..... +07:00". Header was fixed. The data itself is not wrong. (Jul 25, 2011).

Archive parameters:
CSV (Comma Separated Values) and NetCDF (Network Common Data From) formatted data are available.
File names of CSV data are composed of date and variable abbreviations: (year)(month)(day).(variable).csv
File names of NetCDF data are composed of date: (year)(month)(day).nc

Variables File Units Comments
Zonal wind uwnd m/s Westerly wind is positive
Meridional wind vwnd m/s Southerly wind is positive
Vertical wind wwnd m/s Upflow is positive
Echo intensity for Beam 1 pwr1 dB Arbitrary unit
Echo intensity for Beam 2 pwr2 dB Arbitrary unit
Echo intensity for Beam 3 pwr3 dB Arbitrary unit
Echo intensity for Beam 4 pwr4 dB Arbitrary unit
Echo intensity for Beam 5 pwr5 dB Arbitrary unit
Spectral width for Beam 1 wdt1 m/s Half power full width
Spectral width for Beam 2 wdt2 m/s Half power full width
Spectral width for Beam 3 wdt3 m/s Half power full width
Spectral width for Beam 4 wdt4 m/s Half power full width
Spectral width for Beam 5 wdt5 m/s Half power full width

Beam Direction
Beam No. (Az, Ze)
1 ( 0, 0)
2 ( 0, 10)
3 ( 90, 10)
4 (180, 10)
5 (270, 10)
The antenna beam is steered on a pulse-to-pulse basis.

Data Format

Observation Parameters
Parameter Value (Before 11 LT on August 2, 2001) Value (After 11 LT on August 2, 2001)
Subpulse length 1 micro sec 1 micro sec
Inter Pulse Period 200 micro sec 400 micro sec
Number of coherent integrations 16 32
Number of incoherent integrations 7 5
Number of FFT points 512 256
Pulse compression 8 bit optimized code (*) 16 bit optimized code (*)
(*) Spano, E. and O. Ghebrebrhan, Sequences of complementary codes for the optimum decoding of truncated ranges and high sidelobe suppression factors for ST/MST radar systems, IEEE Transactions on Geoscience and Remote Sensing., 34, 330-345, 1996.


June, 2001
GIF File: Winds , Echo intensity , Spectral width
July, 2001
GIF File: Winds , Echo intensity , Spectral width
August, 2001
GIF File: Winds , Echo intensity , Spectral width
September, 2001
GIF File: Winds , Echo intensity , Spectral width
October, 2001
GIF File: Winds , Echo intensity , Spectral width
November, 2001
GIF File: Winds , Echo intensity , Spectral width
December, 2001
GIF File: Winds , Echo intensity , Spectral width

February, 2002
GIF File: Winds , Echo intensity , Spectral width
March, 2002
GIF File: Winds , Echo intensity , Spectral width
April, 2002
GIF File: Winds , Echo intensity , Spectral width
May, 2002
GIF File: Winds , Echo intensity , Spectral width
June, 2002
GIF File: Winds , Echo intensity , Spectral width
July, 2002
GIF File: Winds , Echo intensity , Spectral width
August, 2002
GIF File: Winds , Echo intensity , Spectral width
September, 2002
GIF File: Winds , Echo intensity , Spectral width
October, 2002
GIF File: Winds , Echo intensity , Spectral width
November, 2002
GIF File: Winds , Echo intensity , Spectral width
December, 2002
GIF File: Winds , Echo intensity , Spectral width

January, 2003
GIF File: Winds , Echo intensity , Spectral width
February, 2003
GIF File: Winds , Echo intensity , Spectral width
March, 2003
GIF File: Winds , Echo intensity , Spectral width
April, 2003
GIF File: Winds , Echo intensity , Spectral width
May, 2003
GIF File: Winds , Echo intensity , Spectral width
June, 2003
GIF File: Winds , Echo intensity , Spectral width
July, 2003
GIF File: Winds , Echo intensity , Spectral width
August, 2003
GIF File: Winds , Echo intensity , Spectral width
September, 2003
GIF File: Winds , Echo intensity , Spectral width
October, 2003
GIF File: Winds , Echo intensity , Spectral width
November, 2003
GIF File: Winds , Echo intensity , Spectral width
December, 2003
GIF File: Winds , Echo intensity , Spectral width

January, 2004
GIF File: Winds , Echo intensity , Spectral width
February, 2004
GIF File: Winds , Echo intensity , Spectral width
March, 2004
GIF File: Winds , Echo intensity , Spectral width
April, 2004
GIF File: Winds , Echo intensity , Spectral width
May, 2004
GIF File: Winds , Echo intensity , Spectral width
June, 2004
GIF File: Winds , Echo intensity , Spectral width
July, 2004
GIF File: Winds , Echo intensity , Spectral width
August, 2004
GIF File: Winds , Echo intensity , Spectral width
September, 2004
GIF File: Winds , Echo intensity , Spectral width
October, 2004
GIF File: Winds , Echo intensity , Spectral width
November, 2004
GIF File: Winds , Echo intensity , Spectral width
December, 2004
GIF File: Winds , Echo intensity , Spectral width

January, 2005
GIF File: Winds , Echo intensity , Spectral width
February, 2005
GIF File: Winds , Echo intensity , Spectral width
March, 2005
GIF File: Winds , Echo intensity , Spectral width
April, 2005
GIF File: Winds , Echo intensity , Spectral width
May, 2005
GIF File: Winds , Echo intensity , Spectral width
June, 2005
GIF File: Winds , Echo intensity , Spectral width
July, 2005
GIF File: Winds , Echo intensity , Spectral width
August, 2005
GIF File: Winds , Echo intensity , Spectral width
September, 2005
GIF File: Winds , Echo intensity , Spectral width
October, 2005
GIF File: Winds , Echo intensity , Spectral width
November, 2005
GIF File: Winds , Echo intensity , Spectral width
December, 2005
GIF File: Winds , Echo intensity , Spectral width

January, 2006
GIF File: Winds , Echo intensity , Spectral width
February, 2006
GIF File: Winds , Echo intensity , Spectral width
March, 2006
GIF File: Winds , Echo intensity , Spectral width
April, 2006
GIF File: Winds , Echo intensity , Spectral width
May, 2006
GIF File: Winds , Echo intensity , Spectral width
June, 2006
GIF File: Winds , Echo intensity , Spectral width
July, 2006
GIF File: Winds , Echo intensity , Spectral width
August, 2006
GIF File: Winds , Echo intensity , Spectral width
September, 2006
GIF File: Winds , Echo intensity , Spectral width
October, 2006
GIF File: Winds , Echo intensity , Spectral width
November, 2006
GIF File: Winds , Echo intensity , Spectral width
December, 2006
GIF File: Winds , Echo intensity , Spectral width

January, 2007
GIF File: Winds , Echo intensity , Spectral width
February, 2007
GIF File: Winds , Echo intensity , Spectral width
March, 2007
GIF File: Winds , Echo intensity , Spectral width
April, 2007
GIF File: Winds , Echo intensity , Spectral width
May, 2007
GIF File: Winds , Echo intensity , Spectral width
June, 2007
GIF File: Winds , Echo intensity , Spectral width
July, 2007
GIF File: Winds , Echo intensity , Spectral width
August, 2007
GIF File: Winds , Echo intensity , Spectral width
September, 2007
GIF File: Winds , Echo intensity , Spectral width
October, 2007
GIF File: Winds , Echo intensity , Spectral width
November, 2007
GIF File: Winds , Echo intensity , Spectral width
December, 2007
GIF File: Winds , Echo intensity , Spectral width

January, 2008
GIF File: Winds , Echo intensity , Spectral width
February, 2008
GIF File: Winds , Echo intensity , Spectral width
March, 2008
GIF File: Winds , Echo intensity , Spectral width
April, 2008
GIF File: Winds , Echo intensity , Spectral width
May, 2008
GIF File: Winds , Echo intensity , Spectral width
June, 2008
GIF File: Winds , Echo intensity , Spectral width
July, 2008
GIF File: Winds , Echo intensity , Spectral width
August, 2008
GIF File: Winds , Echo intensity , Spectral width
September, 2008
GIF File: Winds , Echo intensity , Spectral width
October, 2008
GIF File: Winds , Echo intensity , Spectral width
November, 2008
GIF File: Winds , Echo intensity , Spectral width
December, 2008
GIF File: Winds , Echo intensity , Spectral width

January, 2009
GIF File: Winds , Echo intensity , Spectral width
April, 2009
GIF File: Winds , Echo intensity , Spectral width
May, 2009
GIF File: Winds , Echo intensity , Spectral width
June, 2009
GIF File: Winds , Echo intensity , Spectral width
July, 2009
GIF File: Winds , Echo intensity , Spectral width
August, 2009
GIF File: Winds , Echo intensity , Spectral width
September, 2009
GIF File: Winds , Echo intensity , Spectral width
October, 2009
GIF File: Winds , Echo intensity , Spectral width
November, 2009
GIF File: Winds , Echo intensity , Spectral width
December, 2009
GIF File: Winds , Echo intensity , Spectral width

January, 2010
GIF File: Winds , Echo intensity , Spectral width
February, 2010
GIF File: Winds , Echo intensity , Spectral width
March, 2010
GIF File: Winds , Echo intensity , Spectral width
April, 2010
GIF File: Winds , Echo intensity , Spectral width
May, 2010
GIF File: Winds , Echo intensity , Spectral width
June, 2010
GIF File: Winds , Echo intensity , Spectral width
July, 2010
GIF File: Winds , Echo intensity , Spectral width
August, 2010
GIF File: Winds , Echo intensity , Spectral width
September, 2010
GIF File: Winds , Echo intensity , Spectral width
October, 2010
GIF File: Winds , Echo intensity , Spectral width
November, 2010
GIF File: Winds , Echo intensity , Spectral width
December, 2010
GIF File: Winds , Echo intensity , Spectral width

January, 2011
GIF File: Winds , Echo intensity , Spectral width
February, 2011
GIF File: Winds , Echo intensity , Spectral width
March, 2011
GIF File: Winds , Echo intensity , Spectral width
April, 2011
GIF File: Winds , Echo intensity , Spectral width
May, 2011
GIF File: Winds , Echo intensity , Spectral width
June, 2011
GIF File: Winds , Echo intensity , Spectral width
July, 2011
GIF File: Winds , Echo intensity , Spectral width
August, 2011
GIF File: Winds , Echo intensity , Spectral width
September, 2011
GIF File: Winds , Echo intensity , Spectral width
October, 2011
GIF File: Winds , Echo intensity , Spectral width
November, 2011
GIF File: Winds , Echo intensity , Spectral width
December, 2011
GIF File: Winds , Echo intensity , Spectral width

January, 2012
GIF File: Winds , Echo intensity , Spectral width
February, 2012
GIF File: Winds , Echo intensity , Spectral width
March, 2012
GIF File: Winds , Echo intensity , Spectral width
April, 2012
GIF File: Winds , Echo intensity , Spectral width
May, 2012
GIF File: Winds , Echo intensity , Spectral width
June, 2012
GIF File: Winds , Echo intensity , Spectral width
July, 2012
GIF File: Winds , Echo intensity , Spectral width
August, 2012
GIF File: Winds , Echo intensity , Spectral width
September, 2012
GIF File: Winds , Echo intensity , Spectral width
October, 2012
GIF File: Winds , Echo intensity , Spectral width
November, 2012
GIF File: Winds , Echo intensity , Spectral width
December, 2012
GIF File: Winds , Echo intensity , Spectral width

January, 2013
GIF File: Winds , Echo intensity , Spectral width
February, 2013
GIF File: Winds , Echo intensity , Spectral width
March, 2013
GIF File: Winds , Echo intensity , Spectral width
April, 2013
GIF File: Winds , Echo intensity , Spectral width
May, 2013
GIF File: Winds , Echo intensity , Spectral width
June, 2013
GIF File: Winds , Echo intensity , Spectral width
July, 2013
GIF File: Winds , Echo intensity , Spectral width
August, 2013
GIF File: Winds , Echo intensity , Spectral width
September, 2013
GIF File: Winds , Echo intensity , Spectral width
October, 2013
GIF File: Winds , Echo intensity , Spectral width
November, 2013
GIF File: Winds , Echo intensity , Spectral width
December, 2013
GIF File: Winds , Echo intensity , Spectral width

January, 2014
GIF File: Winds , Echo intensity , Spectral width
February, 2014
GIF File: Winds , Echo intensity , Spectral width
March, 2014
GIF File: Winds , Echo intensity , Spectral width
April, 2014
GIF File: Winds , Echo intensity , Spectral width
May, 2014
GIF File: Winds , Echo intensity , Spectral width
June, 2014
GIF File: Winds , Echo intensity , Spectral width
July, 2014
GIF File: Winds , Echo intensity , Spectral width
August, 2014
GIF File: Winds , Echo intensity , Spectral width
September, 2014
GIF File: Winds , Echo intensity , Spectral width
October, 2014
GIF File: Winds , Echo intensity , Spectral width
November, 2014
GIF File: Winds , Echo intensity , Spectral width
December, 2014
GIF File: Winds , Echo intensity , Spectral width

January, 2015
GIF File: Winds , Echo intensity , Spectral width
February, 2015
GIF File: Winds , Echo intensity , Spectral width
March, 2015
GIF File: Winds , Echo intensity , Spectral width
April, 2015
GIF File: Winds , Echo intensity , Spectral width
May, 2015
GIF File: Winds , Echo intensity , Spectral width
June, 2015
GIF File: Winds , Echo intensity , Spectral width
July, 2015
GIF File: Winds , Echo intensity , Spectral width
August, 2015
GIF File: Winds , Echo intensity , Spectral width
September, 2015
GIF File: Winds , Echo intensity , Spectral width
October, 2015
GIF File: Winds , Echo intensity , Spectral width
November, 2015
GIF File: Winds , Echo intensity , Spectral width
December, 2015
GIF File: Winds , Echo intensity , Spectral width

January, 2016
GIF File: Winds , Echo intensity , Spectral width
February, 2016
GIF File: Winds , Echo intensity , Spectral width
March, 2016
GIF File: Winds , Echo intensity , Spectral width
April, 2016
GIF File: Winds , Echo intensity , Spectral width
May, 2016
GIF File: Winds , Echo intensity , Spectral width
June, 2016
GIF File: Winds , Echo intensity , Spectral width
July, 2016
GIF File: Winds , Echo intensity , Spectral width

EAR Management Group
Research Institute for Sustainable Humanosphere (RISH), Kyoto University
Gokasho, Uji, Kyoto 611-0011, Japan
Created: January 21, 2002
E-mail: ear@rish.kyoto-u.ac.jp

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