Environmental Engineering Reference
In-Depth Information
Figure 7.4
Upper panel
: Upper troposphere SO
2
from the eruption of Nabro,
Eritrea, determined from the AIRS sensor on board the Aqua platform. AIRS has
the capability of distinguishing UTLS SO
2
from gas lower down in the tropo-
sphere; this feature makes these retrievals useful for investigating the effects of
volcanic SO
2
emission on climate. One path of the CALIPSO satellite is shown
by the black line, with time labels at 4-minute intervals.
Lower panel
: Corres-
ponding CALIOP total attenuated backscatter at 532 nm for the CALIPSO
overpass at 18:13
18:27 UT on 18 June 2011. The thin high-backscatter features
around 16 km altitude from 112
-
122
E longitude, 15
50
N latitude, coincide
-
-
well with the SO
2
identi
ed in the AIRS data. A black and white version of this
figure will appear in some formats.
For the colour version, please refer to the plate
