Monitoring ionospheric perturbations using

all-sky imagers

C. Martinis

Center for Space Physics- Boston University, Boston, MA

1

3. Sub-auroral Ionosphere (latitudes below auroral ovals). Stable auroral red (SAR) arcs

(magnetic activity effects that transfer magnetospheric ring current energy into the I-T system)

BU OPTICAL NETWORK

1. Equatorial and low latitude Ionosphere (from magnetic equator to the crests of the

Appleton Anomaly). ESF and MSTIDs, effects on trans-ionospheric radio signals using

GPS and optical diagnosis.

2. Mid latitude Ionosphere (poleward from Anomaly crests to ~ 40 mag lat). Nighttime

MSTIDs, E and F region coupling.

existing

planned

+ All-sky imagers from Brazilian groups: INPE: Cariri and Cachoeira. BV off Future: Cuiaba (15 S ; 56 W) and Santa Maria (29 S; 54 W) UNIVAP: Manaus, SJC, Jatai. Palmas off Future: Araquatins (5 S, 48 W)

BU network of all-sky imagers near 70o W 630.0 nm, 777.4 nm emissions

557.7 nm, 5893 nm, 695.0 nm emissions 644.4 nm, calibration purposes

Illinois imagers. 630.0 and 777.4 nm

Hawaii; Chile narrowfield Tahiti Oukaimeden, Morocco

SRI ASIs: continental US 630.0 nm emissions

OMTI: 13 airglow imagers

From Kelley et al., 2003

Ground-based and Space-based observations

Image credit NASA

From Martinis et al., 2009

El Leoncito, 70 W, 30 S

Martinis et al., 2015 2016

MSTIDs C/NOFS trajectory mapped into El Leoncito FOV

70 W

03/07/2013

777.4 nm 630.0 nm

Three nights of conjugate observations of ESF associated depletions at Villa de Leyva (top) and El Leoncito (bottom).

Conjugate observations Morphology of ESF depletions : differences in width and zonal plasma drifts

* *

Zonal velocities

Bri

ghtn

ess

(R

)

Summary * GOLD + ASIs: good ground-based coverage nighttime Nmax and ESF bubbles formation and evolution * ICON + ASIs: different longitudes; MSTIDs and ESF similarities from conjugate observations