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AERMET PROCESSING VERIFICATION REPORT -- KPIB (HATTIESBURG-LAUREL RGNL AP)
Period 2021-2025   |   Generated 2026-07-26 17:18:02
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OVERALL RESULT: PROCESSED SUCCESSFULLY -- SOME QUARTERS BELOW THE EPA CRITERION

   Processing              PASS
      AERMET errors                    : 0
      Non-physical values in .sfc      : 0
   Data completeness       SEE NOTE
      Quarters meeting EPA 90% criterion: 11 of 20

   Note: 9 quarter(s) fall below the 90% criterion.  This reflects gaps in
   the source observation archive, not an error in processing.  Review those
   periods when selecting a station and period for a regulatory application and
   consider substitute years, consistent with Appendix W and regional guidance.

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1. STATION
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   Surface station      KPIB  HATTIESBURG-LAUREL RGNL AP, MS
   ICAO / WBAN / USAF   KPIB / 53808 / 722348
   GHCNh station ID     USW00053808
   Latitude, longitude  31.4670 N, 89.3330 W
   Elevation            89.3 m MSL
   Wind reference ht    10.0 m   (AERMOD .sfc column 18)
   Temp reference ht    2.0 m   (AERMOD .sfc column 20)

   Upper air station    USM00072235  JACKSON/ALLEN C. THOMPSON FIE
   Latitude, longitude  32.3189 N, 90.0800 W
   Elevation            90.7 m MSL
   Separation           118 km NW of KPIB

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2. SOFTWARE AND INPUT DATA
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   AERMET               26135
   AERMINUTE            26135
   AERSURFACE           26135
   Surface data         NCEI GHCNh hourly (replaces the discontinued ISHD)
   1-minute winds       NCEI ASOS 1-minute and 5-minute, hourly-averaged by
                        AERMINUTE and merged by AERMET
   Upper air            NCEI IGRA v2 radiosonde soundings

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3. SURFACE CHARACTERISTICS (AERSURFACE)
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   Land cover           NLCD 2021 (with impervious and canopy)
   Roughness method     ZORAD, 1000.0 m radius, monthly resolution
   Site coordinates     31.466667, -89.333333  (NAD83)
   Surface moisture     Average;  Arid: N
   Continuous snow      N
   Non-airport sectors  1
   Sectors              2
      sector 1:   0.0 to  180.0 degrees
      sector 2: 180.0 to  360.0 degrees

   Monthly surface characteristics applied by AERMET:

      Month  Sector   Albedo   Bowen ratio   Roughness z0 (m)
      -----  ------   ------   -----------   ----------------
          1       1     0.15          0.61              0.136
          2       1     0.14          0.44              0.171
          3       1     0.14          0.44              0.171
          4       1     0.14          0.44              0.171
          5       1     0.15          0.35              0.221
          6       1     0.15          0.35              0.221
          7       1     0.15          0.35              0.221
          8       1     0.15          0.35              0.221
          9       1     0.15          0.35              0.221
         10       1     0.15          0.61              0.200
         11       1     0.15          0.61              0.200
         12       1     0.15          0.61              0.200
          1       2     0.15          0.61              0.031
          2       2     0.14          0.44              0.040
          3       2     0.14          0.44              0.040
          4       2     0.14          0.44              0.040
          5       2     0.15          0.35              0.049
          6       2     0.15          0.35              0.049
          7       2     0.15          0.35              0.049
          8       2     0.15          0.35              0.049
          9       2     0.15          0.35              0.049
         10       2     0.15          0.61              0.042
         11       2     0.15          0.61              0.042
         12       2     0.15          0.61              0.042

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4. SURFACE DATA QUALITY CONTROL
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   NCEI flags each observation with a quality code that AERMET does not act
   on, so the GHCNh file is screened before processing.  Rejected values are
   blanked (treated as missing); no record is dropped and no value is altered.

   Observations screened            62394
   Rejected, NCEI suspect/erroneous 80
   Rejected, METAR cross-check      0
   Full detail                      KPIB_GHCNh_2021_2025_qc_log.txt

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5. ANNUAL PROCESSING STATISTICS (from AERMET .RP2)
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   Year 2021
      Upper air soundings 743 | Surface obs 8775 | 1-min ASOS hrs 0
      Calms 2834 | Variable winds 664 | Cloud subs 110 | Temp subs 1
      Errors 0 | Warnings 360
   Year 2022
      Upper air soundings 774 | Surface obs 8416 | 1-min ASOS hrs 0
      Calms 2805 | Variable winds 728 | Cloud subs 74 | Temp subs 2
      Errors 0 | Warnings 345
   Year 2023
      Upper air soundings 758 | Surface obs 8733 | 1-min ASOS hrs 0
      Calms 2787 | Variable winds 955 | Cloud subs 123 | Temp subs 1
      Errors 0 | Warnings 359
   Year 2024
      Upper air soundings 754 | Surface obs 8688 | 1-min ASOS hrs 0
      Calms 2471 | Variable winds 578 | Cloud subs 43 | Temp subs 17
      Errors 0 | Warnings 357
   Year 2025
      Upper air soundings 738 | Surface obs 8543 | 1-min ASOS hrs 0
      Calms 2722 | Variable winds 635 | Cloud subs 112 | Temp subs 17
      Errors 0 | Warnings 355

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6. DATA COMPLETENESS
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   EPA requires at least 90% valid data per calendar quarter.  The quarterly
   columns are the compliance test; the annual column is informational.

      Year       Q1       Q2       Q3       Q4     Annual   Result
      ----   ------   ------   ------   ------   --------   ------
      2021    94.0%    91.8%    90.9%    92.6%      92.3%   PASS
      2022    93.1%    83.0%    81.6%    91.2%      87.2%   FAIL
      2023    91.1%    87.7%    83.7%    90.3%      88.2%   FAIL
      2024    93.7%    92.1%    87.7%    82.5%      89.0%   FAIL
      2025    82.8%    91.6%    85.2%    89.2%      87.2%   FAIL

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7. PHYSICAL PLAUSIBILITY OF THE DELIVERED FILES
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   Screening of the .sfc files as delivered.  Wind speeds above 25 m/s and
   temperatures outside -25 to +45 C are reported for review; a non-zero count
   does not by itself mean the data are wrong, but each should be explainable.

      Year   Max wind   Min temp   Max temp   ws>25 m/s   T out of range
      ----   --------   --------   --------   ---------   --------------
      2021     11.3 m/s    -9.3 C    35.7 C           0                0
      2022     12.4 m/s    -8.9 C    39.4 C           0                0
      2023      9.8 m/s    -3.3 C    40.0 C           0                0
      2024     12.9 m/s   -12.2 C    38.2 C           0                0
      2025     16.0 m/s   -12.2 C    37.2 C           0                0

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8. CALMS AND MISSING DATA
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   AERMOD excludes calm hours (wind speed below the 0.5 m/s threshold) and
   missing hours from the averaging period, and reports both in its own output.
   They are counted here so the modeller can anticipate them.

      Year   Calm hrs   Missing hrs   Valid hrs
      ----   --------   -----------   ---------
      2021       2834           675        8085
      2022       2798          1123        7637
      2023       2781          1035        7725
      2024       2468           967        7817
      2025       2722          1120        7640

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9. OUTPUT FILES
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   Files without the US suffix were processed WITHOUT the ADJ_U* option; files
   with the US suffix were processed with METHOD STABLEBL ADJ_U*.  Use one set
   or the other consistently -- do not mix them within a single AERMOD run.

      File                    Size (MB)   Hours   MD5
      --------------------   ---------   -----   --------------------------------
      KPIB2021.sfc                1.47    8784   2a91957ae121ecc031b53603df5d05ca
      KPIB2021.pfl                0.57       -   29ec2f9e872cd39380c19e10bb1bbfbc
      KPIB2021US.sfc              1.47    8784   7c4c5859bde12d3186f87086395589fb
      KPIB2021US.pfl              0.57       -   29ec2f9e872cd39380c19e10bb1bbfbc
      KPIB2022.sfc                1.47    8784   43a2d58404d97314461eaa42c1023dd9
      KPIB2022.pfl                0.57       -   8ce1fc92b7038d8c54d8d65cd92c7542
      KPIB2022US.sfc              1.47    8784   a9a28a06dfbfafb2424deb65e82e0084
      KPIB2022US.pfl              0.57       -   8ce1fc92b7038d8c54d8d65cd92c7542
      KPIB2023.sfc                1.47    8784   d151b531cbec387b44c484cf9ea2d052
      KPIB2023.pfl                0.57       -   fdfee7313177da7cba145ca4284d5e86
      KPIB2023US.sfc              1.47    8784   26f4b4a6bbd5e1c2b9895aa8ec728820
      KPIB2023US.pfl              0.57       -   fdfee7313177da7cba145ca4284d5e86
      KPIB2024.sfc                1.48    8808   79507ac6d0e9f685350a85f862b34b9e
      KPIB2024.pfl                0.57       -   9d897b960270f6a8b405233861869156
      KPIB2024US.sfc              1.48    8808   0b1eb40e9379423618e370fa9493ab3f
      KPIB2024US.pfl              0.57       -   9d897b960270f6a8b405233861869156
      KPIB2025.sfc                1.47    8784   85bf045832dd1a5c4d2a554695a92f1f
      KPIB2025.pfl                0.57       -   97ee409843459aa5bb748e96dfdfb347
      KPIB2025US.sfc              1.47    8784   a730d112224f5fc561e0de60d8d3b827
      KPIB2025US.pfl              0.57       -   97ee409843459aa5bb748e96dfdfb347

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End of report -- KPIB 2021-2025
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