Temperature: Quebec 2
|
Temperature: Quebec 2 |
|
|
||
| The annual cycle of temperature and
mass balance at Quebec 2, October 1997 to October 1998. The internal ice temperature
is displayed using color contours, with blue being cold (-20oC) and red warm
(0oC). The contours show the propagation of the cold front through the ice in
fall and winter and how the ice warms and becomes isothermal in the summer. The
gray shaded area represents snow depth, which reached a maximum of about 30 cm.
The boundary between red and navy blue denotes the ice/ocean interface and the
red/white boundary is the ice/air interface.
Quebec 2 was a slightly raised hummock with a fairly thin snow cover (10-20 cm). Ice conditions were similar to the Pittsburgh site. The thin snow cover resulted in cold ice temperatures and significant ice growth. Ice thickness at Quebec 2 increased from 1.8 m in October 1997 to 2.5 m in June 1998. During summer melt there was 70 cm of surface ablation and 55 cm of bottom ablation. Much of the bottom ablation occurred after the 2 August divergence event, when Quebec went from being in the middle of a floe to being at the edge of a floe. |
|
|
 |
|||||||
|
|
|||||||
 |
 |
 |
 |
 |
 |
||
