[geospace-exp] ISR Campaign starting at 0UT Sept 6th

Dear all,

Thank you very much for your prompt responses. It appears that all sites are able to turn on their radars quickly, except for Arecibo which is under Hurricane Irma threat. Good luck, Arecibo!

The latest NOAA preliminary prediction (see below) suggests that the storm will hit Earth late on Sept 6. I have now decided to run my campaign during the following period:

00 UT on Sept 6 (Wed) — 24 UT Sept 10 (Sunday).

This means we will start 11 hrs from now. Even thought the storm will be coming late on Sept 6, modelers have emphasized many times to me that they need observations for preconditioning.

Thank you in advance for your continued support, and I am looking forward to your new exciting results.

Sep 05 Sep 06 Sep 07
00-03UT 4 3 6 (G2)
03-06UT 3 3 5 (G1)
06-09UT 3 3 5 (G1)
09-12UT 2 3 5 (G1)
12-15UT 2 4 4
15-18UT 2 5 (G1) 4
18-21UT 2 5 (G1) 4
21-00UT 2 6 (G2) 4

Shunrong

From: geospace-exp-bounces@haystack.mit.edu [geospace-exp-bounces@haystack.mit.edu] on behalf of Shun-Rong Zhang
Sent: Monday, September 04, 2017 9:02 PM
To: geospace-exp@openradar.org

Subject: [geospace-exp] CME is likely coming ! Urgent request!

Dear all,

My campaign window is Sept 13-17. I hoped to run a 5 day experiment within that window. However, I just got this report from NOAA space weather prediction:

.24 hr Summary...
Solar activity was at high levels due to Region 2673 (S08W16,
Dkc/beta-gamma-delta) producing multiple M-class flares, the largest of
which was a M5 flare observed at 04/2033 UTC. This region showed steady
growth throughout the period, in addition to becoming more complex
magnetically. Region 2674 (N14E06, Fhi/beta) was relatively stable
producing only one C1/sf flare early in the period. The remaining
regions were stable and inactive.

Initial available SOHO/LASCO coronagraph imagery indicated a likely
asymmetric full halo CME was associated with the M5 flare from Region
2673. In addition, Type-II and Type-IV radio sweeps were observed
around the time of the M5 flare, beginning at 04/2042 UTC, as well as
10cm radio bursts. Additional analysis of the CME will be conducted as
coronagraph imagery becomes available.

In short, a hole CME is likely heading to Earth, and we expect major geospace storm effects. It has be very rare in recent years to encounter hole CMEs and I really would like to grasp this opportunity. I hope to move my 5-day window to sometime this week. I would like to ask if your facilities have the flexibility to turn on your radars for 5 days in a few days from now. I will check closely the space weather prediction, and I should know exact when the CME is arriving and when we should start our experiment, but as we know, it takes ~3 days for them to arrive …

Thanks very much for your collaboration!

Shunrong