DQRID : D140515.5
Start DateStart TimeEnd DateEnd Time Data Quality Metric
09/28/20130000Open Ended0000Does not affect quality
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Subject:
ENA/PBLHT/C1-Oceanic Site Planetary Boundary Layer Heights (PBLHs) from Radiosondes - 
Possible Issue
DataStreams:enapblhtsonde1mcfarlC1.s1, enapblhtsonde1mcfarlC1.c1
Description:
Automated methods for estimating PBLHs from radiosonde data may in some instances be 
identifying shallow stable layers over island surfaces as the PBLH. Insufficient data exists 
at this time to modify the automated algorithms to resolve this situation. Reported 
oceanic site PBLHs of <100 m, particularly at night, should be used with caution.
Suggestions: 
When reported VAP PBLHs are <100 m, users should manually compare radiosonde 

potential temperature vs. height diagrams with the four VAP estimates to determine if shallow 
stable layers exist.
Measurements:enapblhtsonde1mcfarlC1.c1:
  • pbl_height_bulk_richardson_pt25
  • pbl_height_bulk_richardson_pt5
  • pbl_height_liu_liang
  • pbl_height_heffter
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enapblhtsonde1mcfarlC1.s1:
  • pbl_height_bulk_richardson_pt25
  • pbl_height_liu_liang
  • pbl_height_bulk_richardson_pt5
  • pbl_height_heffter
more

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