Snow - Capabilities and Requirements (from IGOS Cryosphere Theme Report)
|
Parameter
|
CT O |
Measurement Range |
Measurement Accuracy |
Resolution |
Comment / Principal Driver |
||||||
|
Spatial |
Temporal |
||||||||||
|
L |
H |
U |
V |
U |
V |
U |
V |
U |
|||
|
Snow Cover |
C |
20 |
100 |
% |
15-20 |
% |
1 |
km |
|
day |
e.g. MODIS |
|
T |
0 |
100 |
% |
10 |
% |
0.5 |
km |
1 |
day |
Hydromet |
|
|
O |
0 |
100 |
% |
5 |
% |
0.1 |
km |
12 |
hr |
||
|
Snow Water Equivalent, satellite (Shallow) |
C |
0 |
0.2 |
m |
2-10 |
cm |
25 |
km |
1 |
day |
e.g. AMSR-E |
|
T |
0 |
0.3 |
m |
3 |
cm |
0.5 |
km |
6 |
day |
Hydromet |
|
|
O |
0 |
0.3 |
m |
2 |
cm |
0.1 |
km |
12 |
hr |
||
|
Snow Water Equivalent, satellite (Deep) |
C |
None |
--- |
--- |
--- |
--- |
--- |
--- |
--- |
--- |
Need HF SAR |
|
T |
0.3 |
3 |
m |
10 |
% |
0.5 |
km |
6 |
day |
||
|
O |
0.3 |
3 |
m |
7 |
% |
0.1 |
km |
12 |
hr |
||
|
Snow Water Equivalent, |
C |
0 |
3 |
m |
1 |
cm |
1 |
m |
30 |
day |
Hydromet |
|
T |
0 |
3 |
m |
1 |
cm |
1 |
m |
7 |
day |
Hydromet |
|
|
O |
0 |
3 |
m |
1 |
cm |
1 |
m |
1 |
day |
||
|
Snow Depth, satellite (Shallow) |
C |
0 |
~0.7 |
m |
6-35 |
cm |
25 |
km |
1 |
day |
e.g. AMSR-E |
|
T |
0 |
1 |
m |
10 |
cm |
0.5 |
km |
6 |
day |
Hydromet |
|
|
O |
0 |
1 |
m |
6 |
cm |
0.1 |
km |
1 |
hr |
Transportation |
|
|
Snow Depth, satellite (Deep) |
C |
None |
--- |
--- |
--- |
--- |
--- |
--- |
--- |
--- |
Need HF SAR |
|
T |
1 |
10 |
m |
10 |
% |
0.5 |
km |
6 |
day |
Hydromet |
|
|
O |
1 |
10 |
m |
6 |
% |
0.1 |
km |
1 |
hr |
Transportation |
|
|
Snow Depth, in situ |
C |
0 |
10 |
m |
1 |
cm |
1 |
m |
1 |
day |
Hydromet |
|
T |
0 |
10 |
m |
1 |
cm |
1 |
m |
6 |
hr |
||
|
O |
0 |
10 |
m |
1 |
cm |
1 |
m |
1 |
hr |
||
Codes are as follows: C = Current Capability, T = Threshold Requirement (Minimum necessary), O= Objective Requirement (Target), L = Low end of measurement range, U = Unit, H = High end of measurement range, V = Value, cl = climate, op = operational.