News
November 7, 2017
NCEP/DOE data during October 2017 have been added
November 2, 2017
JRA-55 data during October 2017 have been added
November 1, 2017
ERA-Interim data during August 2017 have been added
October 6, 2017
NCEP/DOE data during September 2017 have been added
October 3, 2017
ERA-Interim data during July 2017, and JRA-55 data during September 2017 have been added
September 25, 2017
NCEP/DOE data during August 2017 have been added
September 4, 2017
JRA-55 data during August 2017 have been added
August 24, 2017
ERA-Interim data during June 2017 have been added
August 8, 2017
NCEP/DOE data during July 2017 have been added
August 3, 2017
JRA-55 data during July 2017 have been added
August 2, 2017
ERA-Interim data during May 2017 have been added
July 9, 2017
ERA-Interim data during April 2017, and NCEP/DOE data during June 2017 have been added
July 3, 2017
JRA-55 data during June 2017 have been added
This system will be unavailable during June 23-26, 2017 for the server maintenance.
June 6, 2017
NCEP/DOE data during May 2017 have been added
June 3, 2017
ERA-Interim data during March 2017, and JRA-55 data during May 2017 have been added
May 11, 2017
ERA-Interim data during February 2017 have been added
May 8, 2017
JRA-55 and NCEP/DOE data during April 2017 have been added
April 11, 2017
NCEP/DOE data during March 2017 have been added
April 7, 2017
ERA-Interim data during January 2017 have been added
April 3, 2017
JRA-55 data during March 2017 have been added
March 6, 2017
JRA-55 and NCEP/DOE data during February 2017 have been added
This system will be unavailable during March 4-6, 2017 for the server maintenance.
February 15, 2017
NCEP/DOE data during January 2017 have been added
February 3, 2017
ERA-Interim data during November-December 2016, and JRA-55 data during January 2017 have been added
January 9, 2017
ERA-Interim data during October 2016, JRA-55 data during December 2016, and NCEP/DOE data during December 2016 have been added
December 8, 2016
ERA-Interim data during September 2016 have been added
December 7, 2016
NCEP/DOE data during November 2016 have been added
December 5, 2016
JRA-55 data during November 2016 have been added
November 6, 2016
NCEP/DOE data during October 2016, and ERA-Interim data during August 2016 have been added
November 3, 2016
JRA-55 data during October 2016 have been added
October 6, 2016
NCEP/DOE data during September 2016, and ERA-Interim data during July 2016 have been added
October 3, 2016
JRA-55 data during September 2016 have been added
September 8, 2016
NCEP/DOE data during August 2016, and ERA-Interim data during June 2016 have been added
September 3, 2016
JRA-55 data during August 2016 have been added
August 9, 2016
NCEP/DOE data during July 2016 have been added
August 5, 2016
JRA-55 data during July 2016, and ERA-Interim data during May 2016 have been added
July 14, 2016
NCEP/DOE data during June 2016 have been added
July 6, 2016
JRA-55 data during June 2016, and ERA-Interim data during April 2016 have been added
June 8, 2016
This system will be unavailable during June 17-20, 2016 for the server maintenance.
June 8, 2016
NCEP/DOE data during May 2016, JRA-55 data during May 2016, and ERA-Interim data during March 2016 have been added
May 11, 2016
NCEP/DOE data during April 2016, and ERA-Interim data during February 2016 have been added
May 4, 2016
JRA-55 data during April 2016 have been added
April 25, 2016
NCEP/DOE data during March 2016 have been added
April 8, 2016
ERA-Interim data during January 2016 have been added
April 6, 2016
JRA-55 data during March 2016 have been added
March 25, 2016
MERRA data during February 2016 have been added
March 22, 2016
NCEP/DOE data during February 2016 have been added
March 7, 2016
JRA-55 data during February 2016 have been added
March 2, 2016
MERRA data during January 2016 have been added
February 9, 2016
NCEP/DOE data during January 2016, and JRA-55 data during January 2016 have been added
February 8, 2016
MERRA data during December 2015 have been added
January 26, 2016
ERA-Interim data during November and December 2015 have been added
January 21, 2016
ERA-Interim data during October 2015 have been added
January 7, 2016
MERRA data during November 2015, NCEP/DOE data during December 2015, and JRA-55 data during December 2015 have been added
December 16, 2015
NCEP/DOE data during November 2015 have been added
December 10, 2015
JRA-55 data during November 2015 have been added
December 9, 2015
ERA-Interim data during September 2015 have been added
December 3, 2015
When drawing zonal-mean figures of daily- or monthly-mean values, daily- or monthly-mean values at 0E have been plotted by mistake. This error was fixed. I am sorry for your inconvenience.
December 3, 2015
MERRA data during October 2015 have been added
November 15, 2015
ERA-Interim data during August 2015, and NCEP/DOE data and JRA-55 data during October 2015 have been added
October 23, 2015
MERRA data during September 2015 have been added
October 13, 2015
NCEP/DOE data during September 2015 have been added
October 6, 2015
ERA-Interim data during July 2015, and JRA-55 data during September 2015 have been added
September 28, 2015
MERRA data during August 2015 have been added
September 11, 2015
JRA-55 data during August 2015 have been added
September 10, 2015
NCEP/DOE data during August 2015 have been added
September 9, 2015
ERA-Interim data during June 2015 have been added
August 26, 2015
MERRA data during July 2015 have been added
August 8, 2015
ERA-Interim data during May 2015, JRA-55 data during July 2015, and NCEP/DOE data during July 2015 have been added
July 25, 2015
MERRA data during June 2015 have been added
July 19, 2015
NCEP/DOE data during June 2015 have been added
July 14, 2015
ERA-Interim data during April 2015 have been added
July 3, 2015
JRA-55 data during June 2015 have been added
July 3, 2015
Decode of the MERRA vertical velocity data has been updated because an error was found in the decode program. If you are employing figures of MERRA vertical velocity data or results of MERRA kinematic trajectories, please redraw or recalculate them. I am sorry for your inconvenience.
June 27, 2015
MERRA data during May 2015 have been added
June 11, 2015
NCEP/DOE data during May 2015 have been added
June 3, 2015
JRA-55 data during May 2015 have been added
May 28, 2015
This server will be stopped from June 5 to 8 because of a scheduled blackout
May 28, 2015
ERA-Interim data during March 2015 and NCEP/DOE data during April 2015 have been added
May 25, 2015
MERRA data during April 2015 have been added
May 2, 2015
JRA-55 data during April 2015 have been added
April 30, 2015
ERA-Interim data during February 2015 have been added
April 24, 2015
MERRA data during March 2015 have been added
April 10, 2015
ERA-Interim data during January 2015 have been added
April 8, 2015
NCEP/DOE data during March 2015 have been added
April 3, 2015
MERRA data during February 2015 have been added
April 2, 2015
JRA-55 data during March 2015 have been added
March 16, 2015
NCEP/DOE data during February 2015 have been added
March 3, 2015
JRA-55 data during February 2015 have been added
February 27, 2015
MERRA data during January 2015 have been added
February 9, 2015
NCEP/DOE data during January 2015 have been added
February 5, 2015
MERRA data during December 2014 and JRA-55 data during January 2015 have been added
January 15, 2015
NCEP/DOE data during December 2014 have been added
January 11, 2015
ERA-Interim data during November and December 2014 have been added
January 3, 2015
MERRA data during November 2014 and JRA-55 data during December 2014 have been added
December 12, 2014
ERA-Interim data during September and October 2014 have been added
December 6, 2014
NCEP/DOE data during October and November 2014 have been added
December 3, 2014
JRA-55 data during November 2014 have been added
November 21, 2014
MERRA data during October 2014 have been added
November 7, 2014
NCEP/DOE data during September 2014 and ERA-Interim data during August 2014 have been added
November 4, 2014
JRA-55 data during October 2014 have been added
October 24, 2014
MERRA data during September 2014 have been added
October 17, 2014
ERA-Interim data during July 2014 have been added
October 2, 2014
MERRA data during August 2014 and JRA-55 data during September 2014 have been added
September 8, 2014
NCEP/DOE data during August 2014 and ERA-Interim data during June 2014 have been added
September 4, 2014
JRA-55 data during August 2014 have been added
August 29, 2014
MERRA data during July 2014 have been added
August 13, 2014
JRA-55 data during October 1957 to July 2014 became available
August 8, 2014
NCEP/DOE data during July 2014 and ERA-Interim data during May 2014 have been added
July 24, 2014
MERRA data during June 2014 have been added
July 8, 2014
ERA-Interim data during April 2014 have been added
July 7, 2014
NCEP/DOE data during June 2014 have been added
June 26, 2014
MERRA data during May 2014 have been added
June 9, 2014
NCEP/DOE data during May 2014 and ERA-Interim data during March 2014 have been added
May 25, 2014
MERRA data during April 2014 have been added
May 7, 2014
NCEP/DOE data during April 2014 have been added
May 3, 2014
MERRA data during March 2014 and ERA-Interim data during January to February 2014 have been added
April 7, 2014
NCEP/DOE data during March 2014 have been added
April 1, 2014
MERRA data during November 2013 to February 2014 have been added
March 26, 2014
ERA-Interim data during August to December 2013 and NCEP/DOE data during November 2013 to February 2014 have been added
December 2, 2013
JCDAS data during November 2013 and MERRA data during October 2013 have been added
November 9, 2013
NCEP/DOE data during October 2013 have been added
November 3, 2013
JCDAS data during October 2013 and MERRA data during September 2013 have been added
October 10, 2013
NCEP/DOE data during September 2013 have been added
October 9, 2013
ERA-Interim data during July 2013 have been added
October 2, 2013
JCDAS data during September 2013 have been added
September 25, 2013
MERRA data during August 2013 have been added
September 7, 2013
ERA-Interim data during June 2013 have been added
September 6, 2013
NCEP/DOE data during August 2013 and MERRA data during July 2013 have been added
September 2, 2013
JCDAS data during August 2013 have been added
August 14, 2013
ERA-Interim data during May 2013 have been added
August 9, 2013
NCEP/DOE data during July 2013 have been added
August 2, 2013
JCDAS data during July 2013 and MERRA data during April to June 2013 have been added
July 8, 2013
ERA-Interim data during April 2013 have been added
July 6, 2013
NCEP/DOE data during June 2013 have been added
July 3, 2013
JCDAS data during June 2013 have been added
June 23, 2013
ERA-Interim data during March 2013 have been added
June 9, 2013
NCEP/DOE data during May 2013 have been added
June 3, 2013
JCDAS data during May 2013 have been added
May 12, 2013
NCEP/DOE data during April 2013 have been added
May 9, 2013
ERA-Interim data during February 2013 have been added
May 5, 2013
JCDAS data during April 2013 and MERRA data during March 2013 have been added
April 18, 2013
-MERRA data during January 1979 to February 2013 are now available
-You can specify latitude, longitude, and pressure ranges and contour intervals in the Meteorological Field Display System
April 4, 2013
NCEP/DOE data during March 2013 have been added
April 3, 2013
JCDAS data during March 2013 and ERA-Interim data during January 1979 to December 1988 have been added
April 1, 2013
ERA-Interim data during January 2010 to January 2013 have been added
March 13, 2013
NCEP/DOE and JCDAS data during February 2013 have been added
February 13, 2013
NCEP/DOE and JCDAS data during November 2012 to January 2013 have been added
November 25, 2012
ERA-Interim data in 1989-2009 are now available
November 16, 2012
NCEP/DOE and JCDAS data during October 2012 have been added
November 7, 2012
This server will be stopped on Nov. 25 because of a scheduled blackout
November 7, 2012
NCEP/DOE and JCDAS data during September 2012 have been added
September 20, 2012
NCEP/DOE and JCDAS data during August 2012 have been added
August 24, 2012
NCEP/DOE and JCDAS data during July 2012 have been added
July 9, 2012
NCEP/DOE and JCDAS data during June 2012 have been added
June 6, 2012
NCEP/DOE and JCDAS data during May 2012 have been added
May 8, 2012
NCEP/DOE and JCDAS data during April 2012 have been added
April 25, 2012
NCEP/DOE and JCDAS data during November 2011 to March 2012 have been added
November 7, 2011
NCEP/DOE data during October 2011 have been added
November 3, 2011
JCDAS data during October 2011 have been added
October 6, 2011
NCEP/DOE data during September 2011 have been added
October 3, 2011
JCDAS data during September 2011 have been added
September 5, 2011
NCEP/DOE and JCDAS data during August 2011 have been added
August 6, 2011
NCEP/DOE data during July 2011 have been added
August 3, 2011
JCDAS data during July 2011 have been added
July 7, 2011
NCEP/DOE and JCDAS data during June 2011 have been added
June 6, 2011
NCEP/DOE and JCDAS data during May 2011 have been added
May 10, 2011
NCEP/DOE data during April 2011 have been added
May 2, 2011
JCDAS data during April 2011 have been added
April 7, 2011
NCEP/DOE and JCDAS data during March 2011 have been added
March 6, 2011
NCEP/DOE data during February 2011 have been added
March 4, 2011
JCDAS data during February 2011 have been added
February 3, 2011
NCEP/DOE data during January 2011 have been added
February 2, 2011
JCDAS data during January 2011 have been added
January 13, 2011
NCEP/DOE data during December 2010 have been added
January 4, 2011
JCDAS data during December 2010 have been added
December 9, 2010
NCEP/DOE data during November 2010 have been added
December 3, 2010
JCDAS data during November 2010 have been added
November 7, 2010
NCEP/DOE data during October 2010 have been added
November 3, 2010
JCDAS data during October 2010 have been added
October 6, 2010
NCEP/DOE data during September 2010 have been added
October 3, 2010
JCDAS data during September 2010 have been added
September 6, 2010
NCEP/DOE data during August 2010 have been added
September 2, 2010
JCDAS data during August 2010 have been added
August 23, 2010
NCEP/DOE and JCDAS data during May through July 2010 have been added
June 4, 2010
The system is sometimes unavailable because of system update.
May 6, 2010
NCEP/DOE data during April 2010 have been added
May 2, 2010
JCDAS data during April 2010 have been added
April 7, 2010
NCEP/DOE data during March 2010 have been added
April 2, 2010
JCDAS data during March 2010 have been added
March 10, 2010
NCEP/DOE data during February 2010 have been added
March 3, 2010
JCDAS data during February 2010 have been added
February 7, 2010
NCEP/DOE data during January 2010 have been added
February 4, 2010
JCDAS data during January 2010 have been added
January 6, 2010
NCEP/DOE data during December 2009 have been added
January 3, 2010
JCDAS data during December 2009 have been added
December 7, 2009
NCEP/DOE data during November 2009 have been added
December 3, 2009
JCDAS data during November 2009 have been added
November 6, 2009
NCEP/DOE data during October 2009 have been added
November 2, 2009
JCDAS data during October 2009 have been added
October 15, 2009
NCEP/DOE data during September 2009 have been added
October 4, 2009
JCDAS data during September 2009 have been added
September 6, 2009
NCEP/DOE data during August 2009 have been added
September 3, 2009
JCDAS data during August 2009 have been added
August 6, 2009
NCEP/DOE data during July 2009 have been added
August 3, 2009
JCDAS data during July 2009 have been added
July 10, 2009
This server will be shutdown from tonight to morning on 13 for the scheduled power failure
July 8, 2009
JCDAS data during June 2009 have been added
July 6, 2009
NCEP/DOE data during June 2009 have been added
June 15, 2009
NCEP/DOE data during May 2009 have been added
June 2, 2009
JCDAS data during May 2009 have been added
May 16, 2009
NCEP/DOE data during April 2009 have been added
May 3, 2009
JCDAS data during April 2009 have been added
April 30, 2009
This server is now available
April 29, 2009
This server is out of service now. Please wait a moment to be restored
April 14, 2009
This server will be shutdown from April 17 through 23 for moving our institute
April 7, 2009
NCEP/DOE data during March 2009 have been added
April 6, 2009
NCEP/DOE data during April to June 2008 have been updated
April 2, 2009
JCDAS data during March 2009 have been added
March 6, 2009
NCEP/DOE and JCDAS data during February 2009 have been added
February 7, 2009
NCEP/DOE data during January 2009 have been added
February 3, 2009
JCDAS data during January 2009 have been added
January 6, 2009
NCEP/DOE data during December 2008 have been added
January 5, 2009
JCDAS data during December 2008 have been added
December 9, 2008
NCEP/DOE data during November 2008 have been added
December 2, 2008
JCDAS data during November 2008 have been added
November 23, 2008
NCEP/DOE data during October 2008 have been added
November 6, 2008
JCDAS data during October 2008 have been added
October 6, 2008
NCEP/DOE and JCDAS data during September 2008 have been added
September 19, 2008
NCEP/DOE and JCDAS data during August 2008 have been added
August 7, 2008
NCEP/DOE and JCDAS data during July 2008 have been added
July 7, 2008
NCEP/DOE data during June 2008 have been added
July 4, 2008
NCEP/DOE data during April through May 2008 and JCDAS data during April through June 2008 have been added
April 7, 2008
NCEP/DOE data during January through March 2008 and JCDAS data during March 2008 have been added
March 4, 2008
JCDAS data during January 2005 through October 2007 have been updated, and JCDAS data during January and February 2008 have been added
February 21, 2008
This homepage will be unavailable from the evening of Feb. 29 to the morning of Mar. 3
February 12, 2008
ERA-40 data during 1957-1978 and 2002 have been added
February 7, 2008
NCEP/DOE data during October through December 2007 have been added
January 16, 2008
JCDAS data during October through December 2007 have been added
October 6, 2007
NCEP/DOE and JCDAS data during July through September 2007 have been added
July 13, 2007
NCEP/DOE and JCDAS data during April through June 2007 have been added
May 11, 2007
HP open

Links

NIPR Trajectory Model
Meteorological Field Display System

Air parcel trajectories are commonly employed to identify the origin of air parcels. The recent increase of interest on the emission inventory of polluted air and a usefulness of trajectory analysis for understanding dynamical and chemical aspects of the atmosphere have promoted the usage of trajectories. Following the increasing demands for trajectory models, the National Institute of Polar Research (NIPR) has undertaken the development of kinematic and isentropic trajectory models. The new Meteorological Field Display System has also been developed for plotting various sections of meteorological data.