==============================================================================
AERMET PROCESSING VERIFICATION REPORT -- KGLH (MID DELTA REGIONAL AIRPORT)
Period 2021-2025   |   Generated 2026-07-26 17:04:12
==============================================================================

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: 19 of 20

   Note: 1 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.

------------------------------------------------------------------------------
1. STATION
------------------------------------------------------------------------------
   Surface station      KGLH  MID DELTA REGIONAL AIRPORT, MS
   ICAO / WBAN / USAF   KGLH / 13939 / 747680
   GHCNh station ID     USW00013939
   Latitude, longitude  33.4940 N, 90.9810 W
   Elevation            37.8 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           155 km SSE of KGLH

------------------------------------------------------------------------------
2. SOFTWARE AND INPUT DATA
------------------------------------------------------------------------------
   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

------------------------------------------------------------------------------
3. SURFACE CHARACTERISTICS (AERSURFACE)
------------------------------------------------------------------------------
   Land cover           NLCD 2021 (with impervious and canopy)
   Roughness method     ZORAD, 1000.0 m radius, monthly resolution
   Site coordinates     33.493889, -90.980556  (NAD83)
   Surface moisture     Average;  Arid: N
   Continuous snow      N
   Non-airport sectors  1
   Sectors              2
      sector 1:  10.0 to  160.0 degrees
      sector 2: 160.0 to   10.0 degrees

   Monthly surface characteristics applied by AERMET:

      Month  Sector   Albedo   Bowen ratio   Roughness z0 (m)
      -----  ------   ------   -----------   ----------------
          1       1     0.18          0.64              0.035
          2       1     0.18          0.64              0.035
          3       1     0.14          0.30              0.046
          4       1     0.14          0.30              0.046
          5       1     0.19          0.47              0.207
          6       1     0.19          0.47              0.207
          7       1     0.19          0.47              0.207
          8       1     0.19          0.47              0.207
          9       1     0.19          0.47              0.207
         10       1     0.19          0.64              0.206
         11       1     0.19          0.64              0.206
         12       1     0.18          0.64              0.035
          1       2     0.18          0.64              0.016
          2       2     0.18          0.64              0.016
          3       2     0.14          0.30              0.020
          4       2     0.14          0.30              0.020
          5       2     0.19          0.47              0.027
          6       2     0.19          0.47              0.027
          7       2     0.19          0.47              0.027
          8       2     0.19          0.47              0.027
          9       2     0.19          0.47              0.027
         10       2     0.19          0.64              0.023
         11       2     0.19          0.64              0.023
         12       2     0.18          0.64              0.016

------------------------------------------------------------------------------
4. SURFACE DATA QUALITY CONTROL
------------------------------------------------------------------------------
   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            55727
   Rejected, NCEI suspect/erroneous 49
   Rejected, METAR cross-check      0
   Full detail                      KGLH_GHCNh_2021_2025_qc_log.txt

------------------------------------------------------------------------------
5. ANNUAL PROCESSING STATISTICS (from AERMET .RP2)
------------------------------------------------------------------------------
   Year 2021
      Upper air soundings 743 | Surface obs 8784 | 1-min ASOS hrs 8784
      Calms 69 | Variable winds 9 | Cloud subs 12 | Temp subs 10
      Errors 0 | Warnings 359
   Year 2022
      Upper air soundings 774 | Surface obs 8759 | 1-min ASOS hrs 8784
      Calms 32 | Variable winds 3 | Cloud subs 23 | Temp subs 13
      Errors 0 | Warnings 356
   Year 2023
      Upper air soundings 758 | Surface obs 8742 | 1-min ASOS hrs 8784
      Calms 141 | Variable winds 17 | Cloud subs 18 | Temp subs 7
      Errors 0 | Warnings 359
   Year 2024
      Upper air soundings 754 | Surface obs 8745 | 1-min ASOS hrs 8808
      Calms 114 | Variable winds 12 | Cloud subs 23 | Temp subs 24
      Errors 0 | Warnings 356
   Year 2025
      Upper air soundings 738 | Surface obs 8145 | 1-min ASOS hrs 8760
      Calms 216 | Variable winds 10 | Cloud subs 54 | Temp subs 50
      Errors 0 | Warnings 344

------------------------------------------------------------------------------
6. DATA COMPLETENESS
------------------------------------------------------------------------------
   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   100.0%    93.9%   100.0%    99.9%      98.4%   PASS
      2022    99.9%    98.4%    98.7%    99.8%      99.2%   PASS
      2023    98.7%    97.5%    99.7%    99.9%      99.0%   PASS
      2024    99.9%    99.6%    97.5%    99.5%      99.1%   PASS
      2025    99.6%    99.8%    93.6%    79.9%      93.2%   FAIL

------------------------------------------------------------------------------
7. PHYSICAL PLAUSIBILITY OF THE DELIVERED FILES
------------------------------------------------------------------------------
   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     12.8 m/s   -11.1 C    36.7 C           0                0
      2022     14.1 m/s   -12.2 C    37.8 C           0                0
      2023     14.0 m/s    -2.8 C    38.9 C           0                0
      2024     14.2 m/s   -11.8 C    38.9 C           0                0
      2025     13.4 m/s   -10.6 C    38.2 C           0                0

------------------------------------------------------------------------------
8. CALMS AND MISSING DATA
------------------------------------------------------------------------------
   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         69           137        8623
      2022         32            72        8688
      2023        141            91        8669
      2024        113            75        8709
      2025        216           598        8162

------------------------------------------------------------------------------
9. OUTPUT FILES
------------------------------------------------------------------------------
   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
      --------------------   ---------   -----   --------------------------------
      KGLH2021.sfc                1.47    8784   628fd4231e403fc3e6bd073904de135c
      KGLH2021.pfl                0.57       -   63a3b5a09617200dc8d48edbd4851142
      KGLH2021US.sfc              1.47    8784   188ca40e8bcbe871a3aa0b58eb1d94d8
      KGLH2021US.pfl              0.57       -   63a3b5a09617200dc8d48edbd4851142
      KGLH2022.sfc                1.47    8784   f6a0649d44e395e79047a9f94a6ded7f
      KGLH2022.pfl                0.57       -   1f76982a8d2daac101a943206fbd9e22
      KGLH2022US.sfc              1.47    8784   d5f4afb12bf2fe7d4b4d87494430bf1d
      KGLH2022US.pfl              0.57       -   1f76982a8d2daac101a943206fbd9e22
      KGLH2023.sfc                1.47    8784   3781c2d9e10f37f4c5334ff9cafc2bd8
      KGLH2023.pfl                0.57       -   df621fcbe2517c81be374f82c10036f9
      KGLH2023US.sfc              1.47    8784   5008ed23560c1836c71546170d951003
      KGLH2023US.pfl              0.57       -   df621fcbe2517c81be374f82c10036f9
      KGLH2024.sfc                1.48    8808   08b80320dd507b983abdaca11979e3d6
      KGLH2024.pfl                0.57       -   c3d817de976c5e28f437bbf3e773cc6f
      KGLH2024US.sfc              1.48    8808   4ebce76bd0d01c369b5d3c002fdb8779
      KGLH2024US.pfl              0.57       -   c3d817de976c5e28f437bbf3e773cc6f
      KGLH2025.sfc                1.47    8784   09f625c530f0b38db5fc4ec12381141e
      KGLH2025.pfl                0.57       -   3be33c3a96b4e6c8517328de490c8a65
      KGLH2025US.sfc              1.47    8784   61bb820b81d8779d9702a73ec27ac85a
      KGLH2025US.pfl              0.57       -   3be33c3a96b4e6c8517328de490c8a65

==============================================================================
End of report -- KGLH 2021-2025
==============================================================================
