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Post by magellan on Jul 1, 2010 23:44:46 GMT
"This is why you have to get the unajusted raw data. What a lot of folks call raw is homoginized data. Sure is NOT raw." GHCN data is raw. The only thing that's been applied is quality assurance, which means they have flagged values. They haven't adjusted values. As for the Australia station data, I don't really care about the BOM High Quality dataset. Ive never used it or see references to it. GHCN and GISTEMP are independent of it. It would take up a lot of my time to investigate the claims being made about BOM adjustments, time I do not wish to spend. Ive spent enough time looking at GHCN and GISTEMP adjustments. However on cursory examination of the first "phase" I note the author has not compared the Cairn station to nearby stations to see why the GISTEMP homogenization was performed. The GISTEMP neighbours search function suggests the upward adjustment to early 20th century part was due to nearby stations showing such an upward trend at that time: data.giss.nasa.gov/cgi-bin/gistemp/gistemp_station.py?id=501942870003&data_set=1&num_neighbors=3data.giss.nasa.gov/cgi-bin/gistemp/gistemp_station.py?id=501942870003&data_set=1&num_neighbors=5I'll reiterate again that the GISTEMP and GHCN records we are all familiar with don't rely on Australia' BOM "High Quality" climate record. So Australia is not an example of the big picture I was talking about. GHCN data is raw. The only thing that's been applied is quality assurance, which means they have flagged values. They haven't adjusted values. NO IT IS NOT RAW. Stop regurgitating this barf mulch. |
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Post by socold on Jul 2, 2010 18:51:52 GMT
It is raw. It's even called GHCN raw. Why don't you lay out a paragraph explaining your understanding of what the input sources for GHCN raw database are and what processing is done.
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Post by magellan on Jul 2, 2010 23:14:27 GMT
It is raw. It's even called GHCN raw. Why don't you lay out a paragraph explaining your understanding of what the input sources for GHCN raw database are and what processing is done. What you think is raw and what GHCN offers is not raw data. Raw data is simply that which is measured. If it is adjusted for TOBS, that is an adjustment. If it is averaged via Tmax+Tmin/2, it is not raw. If it is "quality controlled" for any reason, it is not raw. Data received by GHCN that is "quality controlled" is not raw data. Any processing of the data for any reason is not raw. Data that is averaged by any means is not raw. Unadjusted aka "raw" data from GHCN is not raw. Does that cover it? |
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Post by socold on Jul 2, 2010 23:26:28 GMT
It is raw. It's even called GHCN raw. Why don't you lay out a paragraph explaining your understanding of what the input sources for GHCN raw database are and what processing is done. What you think is raw and what GHCN offers is not raw data. Raw data is simply that which is measured. Which is what GHCN provides. GHCN doesn't adjust for TOB. GHCN has daily min and max values separately. GHCN quality assurance involves removing values that fail quality tests. GHCN provides the original values if needed. GHCN doesn't accept data which has already been adjusted. The data is not altered. Yes thanks for proving GHCN is indeed raw data. |
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