agora.ex.nii.ac.jp: What's New
best track data is updated for the 2011 season in the Western North Pacific.
best track data is updated for the 2010 season in the Western North Pacific.
has been not operational after midnight to the afternoon of October 10.
has been partially not operational from 0600 JST, October 3 to the afternoon of October 6 due to disk failures. It took longer than normal to be recovered, but now it gets back to normal operation.
shows typhoon track data with storm wind circles on Google Maps (V3).
At the same time with switchover from Himawari 6 to Himawari 7
, erros in the past data about satellite name was updated from Himawari 6 to Himawari 7. This resulted in the change of URL for some data.
best track data is updated for the 2009 season in the Western North Pacific. We also started the real-time update of Radar images
has some corrupted data now. This is due to the expiration of a software license, but the system is now in a recovery process, so please wait for a while.
Digital Typhoon: News Topics
changed the algorithm to exclude the titles of related articles from the body. As a result, the number of articles and the number of index terms was reduced about 200 and 1000 respectively, and the number of articles by typhoons and areas was also reduced, but this change improved the result of analysis.
Digital Typhoon released the wind information of best track dataset, which has received many requrests from users. Individual typhoon now has a "wind information" page that summarizes storm wind and gale wind areas, and best track animations also have illustration of storm wind and gale wind areas. The top page also has a link to the summary of wind information of all typhoons
since 1977, when the detailed wind information is added to the best track.
Digital Typhoon: Radar Animations
were extended with data from 2004 through 2008. Radar animations were also added from 2004 through 2008 for typhoons that drew near to Japan.
best track data is updated for the 2008 season in the Western North Pacific.
has been stopped its update for three days from October 24 to October 27. This is due to an unlucky coincidence of my business trip and hardware failure. I could not repsond to the trouble instantly and I am sorry for any inconvenience.
Digital Typhoon: AMeDAS Statistics
is updated to the 2007 version. At the same time, we improved the functionality of AMeDAS chart drawing so that you can visualize real-time data at AMeRAS
and historical data at AMeDAS Heavy Rain
. In addition, we fixed various bugs related to AMeDAS, such as a bug in AMeDAS Heavy Rain
that all observation times were one hour before the true time, and another AMeRAS bug that the historical ranking showed a little smaller ranking since April 2008.
extended the archive of meteorological satellite images, and added data of the 1979 typhoon season (detail
best track data is updated for the 2007 season in the Western North Pacific.
Weather Disaster Database
was updated to include the data of year 2006, and the database was also expanded to include not only typhoon (tropical depression) disasters but also heavy rainfall disasters.
Digital Typhoon AMeRAS
was preliminary opened.
restarted the service of visible imagery after a stop of nearly two years since July 14, 2005
. These data are provided
from Earthquake Research Institute, University of Tokyo, and Institute of Industrial Science, University of Tokyo.
Website is opened. This site is distributing a tool for creating dictionaries, and a tool for synchronizing with MediaWiki to publish dictionaries.
Digital Typhoon: News Topics
has improved its named entity recognition algorithm to realize a higher recognition rate of the birth year of typhoons. This algorithm still producesmany recognition erros, however, so we will keep working on the improvement of the algorithm.
best track data is updated for the 2006 season in the Western North Pacific, and the 2005 season in Australia. In addition, a bug in temperature data is fixed at AMeDAS Statistics
and a few new functions are added.
has been stopped for more than a year, but restarted again today after removing bugs.
The ongoing troubles of Digital Typhoon
due to excessive accesses may be almost solved by measures we took today. Probably...
For these few days, Digital Typhoon
stopped several times due to the large amount of accesses, so I executed an emergency action to reduce the load of servers. This does not solve the problem completely, but I hope this reduces the inconvenience of users.
exceeded the page view of 10 million at the top page (since July 2003). The page view of the site in the same period is about 37.76 million (excluding internal accesses and erros, but not excluding robots).
is now capable of showing "similar typhoons" by tracks and so on, which is one of the top item of the wish list from other people. This was already possible with offline, but now I made it available on the website although its functionality is still incomplete.
In Digital Typhoon
, the southern hemisphere dataset is updated between 2002 and 2004.
In Digital Typhoon
, we found that there is an unbelievable mistake in the database; that is, Typhoon No. 24, No. 25, No. 26 of 2001 have been missing since the beginning. We sometimes felt that something may be wrong with the database, but we have not looked into the problem. The data is now provided on the site.
The server went down due to the huge amount of traffic. The trouble happened on Sunday night, so it took a little long time to recover. I also applied some small ideas for improving the performance.
The meteorological satellite imagery of
is changed from GOES-9 to Himawari-6 (MTSAT-1R) (detail
Due to network failure (?), we detected troubles for database searches since this evening. Sorry for the inconvenience, and we will try our best for quick recovery.
I apologize for the frequent stop of the database server recently. As an emergency measure, I stopped services which are known to cause problems.
Full Text Search
, which has been dead for a long period, is now completely renovated with a new tool.
Database part of this web site has been stopped for more than half day due to the trouble of the system. Now it is recovered.
We found a bug in Digital Typhoon: News Topics
and important keywords were not appropriately selected. Now important keywords unique to each typhoon are more likely to be selected.
The web site was difficult to access due to the approaching of a typhoon, but it seems the speed improved noticeably by simply changing the configuration file of the web server. By the way, the site page view of Digital Typhoon
exceeded 10 million in total.
The web server is enhanced and became more powerful. For the time being, you may experience inconvenience due to the change of the system.
Digital Typhoon Kids
(in Japanese) was opened. And today, the page view of Digital Typhoon (top page)
exceeded a million view. To reach this number (excluding internal accesses), it took one year and one month after the full opening of the site on July 2003. For your information, the page view of the site is about 3.4 million, and the number of accesses to satellite images and others is about 7.25 million. Thank you so much for your continuous support for our site.
Due to a disk crash, some data seem to be disappeared. Perhaps most of the data can be recovered, but some data may not be seen for a while.
A typhoon information aggregation site, "Eyes on the Typhoon" (eye.tc)
was experimentally opened. This site aims at aggregating typhoon information using the trackback.
Archive of AMeDAS Animations
is updated including the AMeDAS data for 2003. By the way, this is not the problem for this particular archive, but these days the WMV encoder does not work well due to unknown reasons, so now we can create only MPEG-2 motion pictures.
We started the page Digital Typhoon (For Mobile Phone)
. The URL of "/i/" suggests that this site is designed for i-mode, but actually this site can be viewed by (some models of) EZweb and Vodafone Live!
On Digital Typhoon
, we recently observe troubles in the program for drawing typhoon track maps. We are working for fixing these problems, but we may still see some troubles.
Due to the trouble of network facility again, this web site cannot be accessed from Oct. 13 06:00 to Oct. 14 10:20.
Due to the trouble of network facility, this web site cannot be accessed from 13:00 yesterday to 9:00 today. We either cannot obtain typhoon information during the same period, so the data of
is partially corrupted. The fix of this data will be done in the next year.
We are now fixing the bug that the aspect ratio of MPEG-2 animations is not displayed correctly in Digital Typhoon
. We will see all animations displayed correctly in a few days.
We have seen the occasional stop of some service for a few hours in Digital Typhoon
, so we took measures to this trouble.
We added new pages "XML
Most of the pages are updated.
A minor change on the design. Addition of a few pages about research.
Update the contents of Typhoon
Bug fixes and updates for
, and several updates for other pages.
The new site "agora.ex.nii.ac.jp" was released.
The domain name of the new site was fixed to "agora.ex.nii.ac.jp." However, it took another one year to reopen the Web site.
The old site "savarin.rd.nacsis.ac.jp" was shut down due to the change of the network policy.
This is the oldest timestamp among remaining website-related files. Maybe this is the period that I first made a web page, but it is unclear due to the lack of reliable records. The first page was released at www.tkl.iis.u-tokyo.ac.jp.