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Schedules & Strategy for ICSOM-2

ICSOM-1 (2015/16)

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ICSOM-1

ICSOM-2

Schedules

ISWA URL: http://pansy.eps.s.u-tokyo.ac.jp/iswa/

Observation strategy

Observation window: 00:00UTC 15 to 24:00UTC 31 January 2016.
  1. Observation will start three days before the predicted SSW onset. Kaoru Sato will send an email for once the onset is predicted, which describes the date of onset of SSW and the observation start time and end time. Universal Time is used for the description of time.
  2. If the SSW onset is predicted before and after the observation window, observations will be performed by only available sites. The earliest record of the (major) SSW is 28 November, 1968. All major SSWs occurred in December or later after that. We chose this observation window (15- 31 January 2016), because most typical SSWs so far tend to occur during this period.
  3. If an SSW onset is not predicted before 21 January 2016, we will start simultaneous observations at all sites on 00:00UTC 22 January and continue until 24:00UTC 31 January. This observation will provide valuable data for comparison with those from future successful SSW observation campaigns.

The atmosphere condition this boreal winter

A strong El Nino condition is currently on-going. Statistics show that a strong wave-one type (a displacement type) SSW tends to occur in El Nino conditions. This is a good news for us. In contrast, the equatorial stratospheric QBO is in a westerly phase. This is not a favorable condition for SSW.

The announcement of observation start time according to the SSW onset prediction

The PANSY radar group will look at following prediction sites:
We greatly appreciate these sites for their providing invaluable information.

Two types of announcements will be sent by email.