Discrepancies Encountered in Calculating Stability Indices

Details

• Corporate Authors:
  United States. National Weather Service. Eastern Region
• NOAA Program & Office:
  NWS (National Weather Service) ; ER (Eastern Region)
• Description:
  At ERH we have been routinely running an AFOS applications program that evaluates the likelihood of flash flooding (FLASHFLOOD.SV). While checking out the results for the July 2 122 run, we noticed a wide discrepancy between the program's calculated K index for Wallops Island (WAL) and that appearing on NMC's LI/KI plot (NMCGPHPØL). The program gave a K of 12, while the NMC plot showed a K of only 2. The lifted index differed also, but by only 2 units. This discrepancy could be attributed to different numerical calculation methods, but the difference in K's was too great to be explained that easily. We decided to investigate further.
• Keywords:
  Atmospheric Models Automation Evaluation Flood Forecasting Weather Forecasting Atmospheric Models Flood Forecasting Weather Forecasting
• Series:
  Eastern Region technical attachment (National Weather Service (U.S.))   81-13
• Format:
  pdf
• Document Type:
  Technical Attachment
• Place as Subject:
  East (U.S.)
• License:
  https://creativecommons.org/publicdomain/zero/1.0/
• Rights Information:
  CC0 Public Domain
• Compliance:
  Submitted
• Main Document Checksum:
  urn:sha-512:35c2627462dde82a75d0b12bdc69a4af7c0651cbf573939cdb4967b2e55d9754cb22b2be1c9aaa0f48f6531c36bd65ddd33f3964ef81cfa884a711d382ca2e75
• Download URL:
  https://repository.library.noaa.gov/view/noaa/70493/noaa_70493_DS1.pdf
• File Type:
  [PDF - 2.13 MB ]