The Solar Mass Ejection Imager: Early Results and Prospects for Space Weather Forecasts

Details The Solar Mass Ejection Imager: Early Results and Prospects for Space Weather Forecasts The Solar Mass Ejection Imager: Early Results and Prospects for Space Weather Forecasts

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsh41c..07m&link_type=abstract

American Geophysical Union, Fall Meeting 2003, abstract #SH41C-07

Statistics

2102 Corotating Streams, 2111 Ejecta, Driver Gases, And Magnetic Clouds, 2139 Interplanetary Shocks, 2164 Solar Wind Plasma, 2194 Instruments And Techniques

Scientific paper

The Solar Mass Ejection Imager (SMEI) was launched on 6 January 2003 on a proof-of-concept mission to demonstrate the feasibility of a space-based heliospheric imager for detecting and tracking Coronal Mass Ejections (CMEs) and other dense structures in the solar wind. SMEI is comprised of three spaceward-looking push broom imagers that together provide photometric images of the entire sky, minus a small region near the Sun, every 101 minutes. The unique sunlight rejection baffles and high photometric sensitivity of the SMEI cameras allows for the imaging of CMEs via relatively faint Thomson-scattered sunlight from regions of enhanced electron density. Due to its all-sky field-of-regard, SMEI can track and monitor the evolution of CMEs from near the Sun out to and beyond 1 A.U. This capability affords the unprecedented opportunity to study interplanetary CMEs and to forecast the arrival of potentially geoeffective structures at Earth. A number of CMEs have been detected by SMEI since its launch, including a halo event on 28-29 May 2003 that was associated with a geomagnetic storm on 30 May as indicated by both ACE and ground-based measurements. In this talk, we show examples and pertinent statistics of several of the events captured by SMEI and explore prospects for the use of SMEI data in operational space weather forecasting as well as pertinant simulations made using the Hakamada-Akasofu-Fry (HAF) kinematic solar wind model.

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