1 / 14

Space weather phenomena in the ionosphere and their effect on GNSS

IPXX ICAO ISTF/4 New Delhi, India, 5th to 7th February 2014. Space weather phenomena in the ionosphere and their effect on GNSS. (Presented by Japan). SUMMARY

mdobbins
Download Presentation

Space weather phenomena in the ionosphere and their effect on GNSS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. IPXXICAO ISTF/4 New Delhi, India, 5th to 7th February 2014 Space weather phenomena in the ionosphere and their effect on GNSS (Presented by Japan) SUMMARY This paper presents a short review of major space weather phenomena observed in mid- and low-latitude ionosphere. Their effect on GNSS also mentioned.

  2. Sudden Ionospheric Disturbance (SID) SOHO/SEM EUV [count/s] GOES X-ray flux [W/m2] 35 GPS TEC [TECU] 0 TIMED/GUVI O, N2 [R] 10 15 UT [hour] [Tsurutani et al., 2005] [Tsugawa et al., 2007]

  3. Sudden Ionospheric Disturbance (SID)

  4. Ionospheric Storm JST One-month Average Negative Storm Wakkanai foF2 [MHz] Okinawa Positive Storm Kp JST (UT+9h)

  5. Ionospehric Storm

  6. Equatorial Ionization Anomaly 20:40 JST, 23 Jan 2002 20:40 JST, 24 Jan 2002

  7. Equatorial Ionization Anomaly

  8. Storm enhanced density (SED) [Foster et al., JGR, 2005]

  9. Short summary of SED

  10. GPS-TEC Observations for Space Weather Absolute TEC ROTI (~10km scale irregularity) Loss-of-Lock (~100m scale irregularity) 12:20 UT (21:20 JST) 12:40 UT (21:40 JST) 13:00 UT (22:00 JST) 3D simulation of plasma bubble [Courtesy of Dr. T. Yokoyama (NICT) ]

  11. Short summary of EPB

  12. Traveling Ionospheric Disturbances (TID) Large -scale TID (LSTID) [Tsugawa et al., JGR., 2003] Medium -scale TID (MSTID) [Tsugawa et al., GPS solut., 2007]

  13. Traveling Ionospheric Disturbances (TID)

  14. Summary of Ionospheric Space Weather Phenomena Solar Act./ Mag. Storm dependence SED Amplitude Large SID LSTID Med. Ion. Strom Eq. Ion. Anomaly Small Plasma Bubble Lower Atm. dependence MSTID Sporadic E 10km 100km 1000km Global Spatial Scale

More Related