Opened 17 years ago
Closed 16 years ago
#134 closed defect (fixed)
ASG thinning at top/bottom of (refractivity) profiles
| Reported by: | Huw Lewis | Owned by: | Huw Lewis |
|---|---|---|---|
| Priority: | normal | Milestone: | 3.0 |
| Component: | ropp_io | Version: | 1.2 |
| Keywords: | Cc: | dave.offiler@…, mike.rennie@… |
Description
ropp_test MT-IO-03 results show strong bias at top and bottom of refractivity profiles thinned using ASGLOG method. This may suggest a bug in ASG code, or perhaps the IDL and ROPP methods of interpolating in regions with missing data are leading to biases. The effect is most obvious for refractivity data. See attached image file. This effect needs to be investigated.
Attachments (2)
Change history (5)
by , 17 years ago
| Attachment: | MT-IO-03_ifort9_linux.png added |
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comment:2 by , 16 years ago
| Milestone: | → 3.0 |
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by , 16 years ago
| Attachment: | MT-IO-03_ifort9_linux.2.png added |
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MT-IO-03 test results - v2.0 testing
comment:3 by , 16 years ago
| Resolution: | → fixed |
|---|---|
| Status: | new → closed |
The results of MT-IO-03 at ROPP v2.0 (see attached file) show that the bias at top and bottom of ASGLOG refractivity thinning is now removed. I guess this is related to the undulation offset bug which were identified in previous versions (see #138). It is likely that missing data at the top and bottom of profiles were then interpolated incorrectly, or were not aligned between the original and thinned data.
This gives further evidence that the undulation bug fix is beneficial. See #138. Close ticket as fixed.
MT-IO-03 test results