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AERMET PROCESSING VERIFICATION REPORT -- KHEZ (HRDY-ANRES FD NTCHZ-ADAMS COU)
Period 2021-2025   |   Generated 2026-07-26 17:10:08
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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: 15 of 20

   Note: 5 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      KHEZ  HRDY-ANRES FD NTCHZ-ADAMS COU, MS
   ICAO / WBAN / USAF   KHEZ / 03961 / 722357
   GHCNh station ID     USW00003961
   Latitude, longitude  31.6170 N, 91.2830 W
   Elevation            82.9 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           138 km NE of KHEZ

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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     31.616667, -91.283333  (NAD83)
   Surface moisture     Average;  Arid: N
   Continuous snow      N
   Non-airport sectors  2
   Sectors              2
      sector 1:   1.0 to  316.0 degrees
      sector 2: 316.0 to    1.0 degrees

   Monthly surface characteristics applied by AERMET:

      Month  Sector   Albedo   Bowen ratio   Roughness z0 (m)
      -----  ------   ------   -----------   ----------------
          1       1     0.17          0.92              0.308
          2       1     0.15          0.62              0.456
          3       1     0.15          0.62              0.456
          4       1     0.15          0.62              0.456
          5       1     0.16          0.35              0.588
          6       1     0.16          0.35              0.588
          7       1     0.16          0.35              0.588
          8       1     0.16          0.35              0.588
          9       1     0.16          0.35              0.588
         10       1     0.16          0.92              0.578
         11       1     0.16          0.92              0.578
         12       1     0.17          0.92              0.308
          1       2     0.17          0.92              0.570
          2       2     0.15          0.62              0.943
          3       2     0.15          0.62              0.943
          4       2     0.15          0.62              0.943
          5       2     0.16          0.35              1.235
          6       2     0.16          0.35              1.235
          7       2     0.16          0.35              1.235
          8       2     0.16          0.35              1.235
          9       2     0.16          0.35              1.235
         10       2     0.16          0.92              1.232
         11       2     0.16          0.92              1.232
         12       2     0.17          0.92              0.570

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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            55878
   Rejected, NCEI suspect/erroneous 156
   Rejected, METAR cross-check      0
   Full detail                      KHEZ_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 8699 | 1-min ASOS hrs 0
      Calms 1826 | Variable winds 233 | Cloud subs 4 | Temp subs 1
      Errors 0 | Warnings 360
   Year 2022
      Upper air soundings 774 | Surface obs 8572 | 1-min ASOS hrs 0
      Calms 722 | Variable winds 318 | Cloud subs 0 | Temp subs 4
      Errors 0 | Warnings 351
   Year 2023
      Upper air soundings 758 | Surface obs 8510 | 1-min ASOS hrs 0
      Calms 1678 | Variable winds 368 | Cloud subs 5 | Temp subs 1
      Errors 0 | Warnings 354
   Year 2024
      Upper air soundings 754 | Surface obs 8280 | 1-min ASOS hrs 0
      Calms 1870 | Variable winds 238 | Cloud subs 4 | Temp subs 4
      Errors 0 | Warnings 353
   Year 2025
      Upper air soundings 738 | Surface obs 8379 | 1-min ASOS hrs 0
      Calms 1841 | Variable winds 287 | Cloud subs 8 | Temp subs 2
      Errors 0 | Warnings 350

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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    95.6%    95.1%    95.8%    97.3%      96.0%   PASS
      2022    97.4%    79.9%    94.0%    95.9%      91.8%   FAIL
      2023    94.0%    93.7%    84.9%    95.5%      92.0%   FAIL
      2024    96.2%    88.5%    86.5%    93.3%      91.1%   FAIL
      2025    91.2%    96.7%    87.7%    93.8%      92.3%   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     12.9 m/s    -8.3 C    35.0 C           0                0
      2022     14.9 m/s   -10.0 C    35.7 C           0                0
      2023     16.0 m/s    -5.0 C    39.4 C           0                0
      2024     12.9 m/s   -13.3 C    36.1 C           0                0
      2025     12.9 m/s   -10.6 C    35.7 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       1826           354        8406
      2022        722           718        8042
      2023       1676           700        8060
      2024       1867           779        8005
      2025       1841           674        8086

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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
      --------------------   ---------   -----   --------------------------------
      KHEZ2021.sfc                1.47    8784   11fa89618cc902967867ef424d18eed6
      KHEZ2021.pfl                0.57       -   2ad2506b170afa17b14bf772e70f00e9
      KHEZ2021US.sfc              1.47    8784   849ea6221b34facfa2f2c5a93a52bce7
      KHEZ2021US.pfl              0.57       -   2ad2506b170afa17b14bf772e70f00e9
      KHEZ2022.sfc                1.47    8784   213e6cc132f9489d17cde98808ec7a7e
      KHEZ2022.pfl                0.57       -   312776cbeda8dcd55a82627e5453e8ca
      KHEZ2022US.sfc              1.47    8784   698ac023ed74dbce5c4b5e7af8d9472f
      KHEZ2022US.pfl              0.57       -   312776cbeda8dcd55a82627e5453e8ca
      KHEZ2023.sfc                1.47    8784   cc765e5b154040091de403715925b5a9
      KHEZ2023.pfl                0.57       -   b491398c3de4d85a9fdd8dee7e3256cb
      KHEZ2023US.sfc              1.47    8784   b5b46ee48597bcab86049853cc72deb5
      KHEZ2023US.pfl              0.57       -   b491398c3de4d85a9fdd8dee7e3256cb
      KHEZ2024.sfc                1.48    8808   c39d2edfca5fdf512f01c7e3fb69191e
      KHEZ2024.pfl                0.57       -   180b5515e1b091932b6869aba20ad7d7
      KHEZ2024US.sfc              1.48    8808   9f6a13970af3169cf3fe93a7ca319f86
      KHEZ2024US.pfl              0.57       -   180b5515e1b091932b6869aba20ad7d7
      KHEZ2025.sfc                1.47    8784   b1bdd403f2a3c3651cb6609dc632bcaa
      KHEZ2025.pfl                0.57       -   e1f628a3354717787404ef8c0d5962d6
      KHEZ2025US.sfc              1.47    8784   bbd3b6750e14905b1cee3595f1e4b87a
      KHEZ2025US.pfl              0.57       -   e1f628a3354717787404ef8c0d5962d6

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End of report -- KHEZ 2021-2025
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