|
For the following
observation types, use the table below for the definition of rejected/accepted
flag types:
|
| AMDAR & AIREP |
Aircraft (automated & manual)
reported observations |
| BUOY |
Drifting &
moored buoy observations |
| PAOB |
Manually generated
psuedo-observations of MSLP |
| SHIP |
Surface observation
from a sea station |
| SYNOP |
Surface observation
from a fixed land station |
| SYNOPHI |
Stations
800 metres above sea level which report only station level pressure
and not MSLP |
| |
FLAG
TYPE |
DESCRIPTION |
| REJECTED |
TOO
CLOSE |
Observation
was not selected because it is too close to a previously selected
sounding |
| |
CROSS
VALIDATION |
Datum
failed neighbour check |
| |
IN
EXTRACTION |
Covers
observations that are known to be unreliable before model is run |
| |
WRONG
TIME |
Asynoptic.
Time difference between observation and model first guess field exceeds
prescribed time |
| |
INCOMPLETE/UNSPECIFIED |
Data
is incomplete or unspecified rejection |
| |
GROSS
ERROR |
Observation
differs from model first guess field by more than presribed amount |
| |
DUPLICATE |
Observation
is an exact duplicate of another |
| ACCEPTED
|
|
Data
used by GASP model |
|
Description of GASP
model and details of modifications
to GASP
The observation charts of
Accepted and Rejected Observations are based on code developed by Dr. Chris
Tingwell and modified by Christina Sirakoff to give the final plots. (9/12/2002)
