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AERMET PROCESSING VERIFICATION REPORT -- KGPT (GULFPORT-BILOXI INTL ARPT)
Period 2021-2025   |   Generated 2026-07-26 17:05:23
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OVERALL RESULT: PROCESSED SUCCESSFULLY -- ALL QUARTERS MEET THE EPA CRITERION

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

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1. STATION
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   Surface station      KGPT  GULFPORT-BILOXI INTL ARPT, MS
   ICAO / WBAN / USAF   KGPT / 93874 / 747570
   GHCNh station ID     USW00093874
   Latitude, longitude  30.4120 N, 89.0810 W
   Elevation            4.9 m MSL
   Wind reference ht    10.0 m   (AERMOD .sfc column 18)
   Temp reference ht    -9.0 m   (AERMOD .sfc column 20)

   Upper air station    USM00072233  SLIDELL/MUN. LA
   Latitude, longitude  30.3369 N, 89.8250 W
   Elevation            9.9 m MSL
   Separation           72 km W of KGPT

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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     30.412222, -89.080833  (NAD83)
   Surface moisture     Average;  Arid: N
   Continuous snow      N
   Non-airport sectors  1
   Sectors              2
      sector 1: 180.0 to  315.0 degrees
      sector 2: 315.0 to  180.0 degrees

   Monthly surface characteristics applied by AERMET:

      Month  Sector   Albedo   Bowen ratio   Roughness z0 (m)
      -----  ------   ------   -----------   ----------------
          1       1     0.17          0.62              0.121
          2       1     0.16          0.50              0.152
          3       1     0.16          0.50              0.152
          4       1     0.16          0.50              0.152
          5       1     0.16          0.53              0.173
          6       1     0.16          0.53              0.173
          7       1     0.16          0.53              0.173
          8       1     0.16          0.53              0.173
          9       1     0.16          0.53              0.173
         10       1     0.16          0.53              0.173
         11       1     0.16          0.62              0.154
         12       1     0.16          0.62              0.154
          1       2     0.17          0.62              0.036
          2       2     0.16          0.50              0.045
          3       2     0.16          0.50              0.045
          4       2     0.16          0.50              0.045
          5       2     0.16          0.53              0.051
          6       2     0.16          0.53              0.051
          7       2     0.16          0.53              0.051
          8       2     0.16          0.53              0.051
          9       2     0.16          0.53              0.051
         10       2     0.16          0.53              0.051
         11       2     0.16          0.62              0.045
         12       2     0.16          0.62              0.045

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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            59669
   Rejected, NCEI suspect/erroneous 89
   Rejected, METAR cross-check      1
   Full detail                      KGPT_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 747 | Surface obs 8784 | 1-min ASOS hrs 8784
      Calms 65 | Variable winds 11 | Cloud subs 6 | Temp subs 16
      Errors 0 | Warnings 353
   Year 2022
      Upper air soundings 778 | Surface obs 8784 | 1-min ASOS hrs 8784
      Calms 40 | Variable winds 0 | Cloud subs 2 | Temp subs 3
      Errors 0 | Warnings 359
   Year 2023
      Upper air soundings 771 | Surface obs 8784 | 1-min ASOS hrs 8784
      Calms 231 | Variable winds 60 | Cloud subs 2 | Temp subs 4
      Errors 0 | Warnings 364
   Year 2024
      Upper air soundings 781 | Surface obs 8803 | 1-min ASOS hrs 8808
      Calms 235 | Variable winds 36 | Cloud subs 12 | Temp subs 10
      Errors 0 | Warnings 366
   Year 2025
      Upper air soundings 739 | Surface obs 8605 | 1-min ASOS hrs 8760
      Calms 319 | Variable winds 41 | Cloud subs 27 | Temp subs 25
      Errors 0 | Warnings 368

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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    99.7%    99.8%   100.0%   100.0%      99.8%   PASS
      2022    98.9%   100.0%   100.0%    99.9%      99.7%   PASS
      2023    98.9%    97.9%    99.3%   100.0%      99.0%   PASS
      2024    99.9%    98.9%    98.9%    99.4%      99.3%   PASS
      2025    99.1%    99.5%    94.3%    98.6%      97.9%   PASS

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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     17.3 m/s    -5.6 C    36.7 C           0                0
      2022     13.7 m/s    -5.0 C    38.2 C           0                0
      2023     13.0 m/s    -0.6 C    40.7 C           0                0
      2024     14.7 m/s    -6.8 C    37.8 C           0                0
      2025     11.6 m/s   -13.9 C    36.1 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         65            14        8746
      2022         40            27        8733
      2023        230            84        8676
      2024        232            64        8720
      2025        319           188        8572

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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
      --------------------   ---------   -----   --------------------------------
      KGPT2021.sfc                1.47    8784   0d5d96821f2cba78d8130a0e2b9c5925
      KGPT2021.pfl                0.57       -   c95a05aa2b8322abaef33c6612ebc1cd
      KGPT2021US.sfc              1.47    8784   1fd9aaa10e1644cfdfadcf312396dfd8
      KGPT2021US.pfl              0.57       -   c95a05aa2b8322abaef33c6612ebc1cd
      KGPT2022.sfc                1.47    8784   11e8351cba171901697b15a95cdfcf5a
      KGPT2022.pfl                0.57       -   bc7cf81540a7682302859d1bd72a65c6
      KGPT2022US.sfc              1.47    8784   4cb932d6df97e04ce7487e35fccef4d6
      KGPT2022US.pfl              0.57       -   bc7cf81540a7682302859d1bd72a65c6
      KGPT2023.sfc                1.47    8784   519e9da1d93e9fe8e2a5da2f036e3c00
      KGPT2023.pfl                0.57       -   e19c79ffdf3d6a0fc0377dea263dcb7c
      KGPT2023US.sfc              1.47    8784   62fa81f61cb51f18a10b299c9c0c2473
      KGPT2023US.pfl              0.57       -   e19c79ffdf3d6a0fc0377dea263dcb7c
      KGPT2024.sfc                1.48    8808   9838eb061af413ca12584a81f151724a
      KGPT2024.pfl                0.57       -   8d3100e65381bd674b5824c9907eea8e
      KGPT2024US.sfc              1.48    8808   2590074a31467e2b66384264a81e98b9
      KGPT2024US.pfl              0.57       -   8d3100e65381bd674b5824c9907eea8e
      KGPT2025.sfc                1.47    8784   9eae2496c05b12d62cfebe9dacc849c0
      KGPT2025.pfl                0.57       -   42519f7bd42a5bcf61d41690df5da379
      KGPT2025US.sfc              1.47    8784   eec519628fe1f8f898b3e8ed04516b6b
      KGPT2025US.pfl              0.57       -   42519f7bd42a5bcf61d41690df5da379

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End of report -- KGPT 2021-2025
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