FL510 Posted February 6, 2013 Share Posted February 6, 2013 Any future plans for using the CL31 data from 12, 000 to 25, 000 ft in METARs in the future? Seems silly not to include it. Wasn't 25, 000 ft. the original height goal for ASOS units? Link to comment Share on other sites More sharing options...
isohume Posted February 6, 2013 Share Posted February 6, 2013 The CL31 data is operational and can be viewed with ASOS software, but it's not output to METARs yet. Not sure why, but I imagine it will be in the near future. Link to comment Share on other sites More sharing options...
Stebo Posted February 8, 2013 Share Posted February 8, 2013 The CL31 data is operational and can be viewed with ASOS software, but it's not output to METARs yet. Not sure why, but I imagine it will be in the near future. I think there is issues with it, personally I have seen the output miss thin high clouds, it looks right through them. Link to comment Share on other sites More sharing options...
isohume Posted February 8, 2013 Share Posted February 8, 2013 I think there is issues with it, personally I have seen the output miss thin high clouds, it looks right through them. It could be the sensors. We've had issues with ours and adjustments have been needed by our el-techs. Most times lately, the sky is sampled pretty accurately I've noticed. Link to comment Share on other sites More sharing options...
Stebo Posted February 9, 2013 Share Posted February 9, 2013 It could be the sensors. We've had issues with ours and adjustments have been needed by our el-techs. Most times lately, the sky is sampled pretty accurately I've noticed. That's entirely possible, I only notice it on thin cirrus. Link to comment Share on other sites More sharing options...
FL510 Posted February 9, 2013 Author Share Posted February 9, 2013 Thanks. In another ASOS issue, why are there erroneous gusts associated with the ice-free wind sensors and the New England blizzard? I saw it mentioned in the BOX AFD and the 85 knot gust at KBOS seems suspect. Link to comment Share on other sites More sharing options...
isohume Posted February 9, 2013 Share Posted February 9, 2013 Thanks. In another ASOS issue, why are there erroneous gusts associated with the ice-free wind sensors and the New England blizzard? I saw it mentioned in the BOX AFD and the 85 knot gust at KBOS seems suspect. The IFW sensors are another new senor that is having growing pains. We get calls from the ASOS monitoring agency at least once a week on an IFW error it seems. These are usually fixed by the el-techs within the same day, but over the weekend or holidays it may take a a few days. It depends on the class of airport and the priority of the error. Link to comment Share on other sites More sharing options...
DCAWx Posted February 10, 2013 Share Posted February 10, 2013 Don't get your hopes up for cloud data to be reported above 12,000ft. ASOS's main focus is supporting aviation and providing data for the local aerodrome. There is really no need to provide clouds at that lvl for aircraft that are landing/departing. Link to comment Share on other sites More sharing options...
famartin Posted February 12, 2013 Share Posted February 12, 2013 Don't get your hopes up for cloud data to be reported above 12,000ft. ASOS's main focus is supporting aviation and providing data for the local aerodrome. There is really no need to provide clouds at that lvl for aircraft that are landing/departing. I think you sort of miss the point, as ASOS is already capable of reporting it. They just haven't flipped the switch. Link to comment Share on other sites More sharing options...
Stebo Posted February 13, 2013 Share Posted February 13, 2013 I think you sort of miss the point, as ASOS is already capable of reporting it. They just haven't flipped the switch. Yeah, you can even look at the data on the ASOS, which is where I noticed it consistently misses the high thin cirrus. Link to comment Share on other sites More sharing options...
DCAWx Posted February 13, 2013 Share Posted February 13, 2013 I think you sort of miss the point, as ASOS is already capable of reporting it. They just haven't flipped the switch. I already knew the ceilometers were upgraded to be able to detect clouds up to 25k. Link to comment Share on other sites More sharing options...
FL510 Posted February 14, 2013 Author Share Posted February 14, 2013 I found this NWS document online regarding the approval and transition to CL31 ceilometers. There are a few issues that the paper addresses with reporting clouds above 12,000 ft., but it seems like these questions have easy answers, especially since the use of "NCD" (no cloud detected) is already accepted in foreign METARs, regardless of the height capacity of the ceilometer used. CL31 OFCM Meeting-2.pdf Link to comment Share on other sites More sharing options...
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