Science applications for EISCAT-3D: possibilities for atmospheric research from the mesosphere down to the troposphere Evgenia Belova, Sheila Kirkwood Swedish Institute of Space Physics, Kiruna, Sweden
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Science applications for EISCAT-3D: possibilities for atmospheric research
from the mesosphere down to the troposphere
Evgenia Belova, Sheila KirkwoodSwedish Institute of Space Physics, Kiruna, Sweden
From mesosphere… PMSE/PMWE research
NLCs. Photo by P.Dalin PMSE with MST 50 MHz and EISCAT VHF radars
Polar Mesosphere Summer Echoes and Noctilucent Clouds, NLCs
SOFIE – Solar Occultation FOr Ice on the ÀIM satelliteMARA –Moveable Atmospheric Radar for Antarctica
PMSE VR ~ Ne Mice
Now: Ne measurements are not possible during PMSEEISCAT_3D: common volume measurements PMSE from transmitting site and Ne from remote sites
Kirkwood et al., submitted to AnGeo
Belova et al. 2005
Polar Mesosphere Winter Echoes
Now: strength , spectral widths, vertical winds above ~65 kmEISCAT_3D: horizontal winds, arrival angle (aspect sensitivity), 3D distribution over the whole beamThe same set of parameters as ESRAD but for 60 cm length-scale plus extra.Lower altitudes 50-70 km capabilities to detect more scattering layers
Vhor ~300-400 m/s
Down to the troposphere…
Novel applications for EISCAT_3D:
• Fine-scale layering in the troposhere/lower stratosphere (up to 12-18 km)
• Turbulent mixing
• Wave propagation in the stratosphere
Scatter of radar wave is on fluctuations of humidity, neutral temperature, Ne
Hocking, 1985
Fine-scale layers in the troposphere/lower stratosphere
10-19
10-18
10-17
10-16
10-15
6
8
10
12
14
16
1/m
HEIGHT km
16-Jul-2009 00:00
MsqVR ESRAD
10-18
10-17
10-16
10-15
6
8
10
12
14
16
1/m
HEIGHT km
16-Jul-2009 12:00
MsqVR ESRAD
Hooper et al., 2004
July 2009
ESRAD 50 MHz radar
Temperature profiles/structure (both vertical and horizontal)
Turbulent mixing associated with the tropopause fold:
stratospheric air can be transported into the troposphere
Rao et al. 2006
GW propagation in the stratosphere
Summary
• Interferometric measurements for mesosphere; 3D-structure
• Lower altitudes coverage with interferometric capabilities; 3D- structure
• Raw data (I&Q) is required
• Extra: Small moveable system (for field/expedition measurements)
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