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AERMET PROCESSING VERIFICATION REPORT -- KGWO (GREENWOOD-LEFLORE AIRPORT)
Period 2021-2025   |   Generated 2026-07-26 17:07:50
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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      KGWO  GREENWOOD-LEFLORE AIRPORT, MS
   ICAO / WBAN / USAF   KGWO / 13978 / 747580
   GHCNh station ID     USW00013978
   Latitude, longitude  33.4960 N, 90.0890 W
   Elevation            42.7 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           131 km S of KGWO

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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     33.496111, -90.089444  (NAD83)
   Surface moisture     Average;  Arid: N
   Continuous snow      N
   Non-airport sectors  2
   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     0.17          0.62              0.022
          2       1     0.17          0.62              0.022
          3       1     0.15          0.36              0.027
          4       1     0.15          0.36              0.027
          5       1     0.18          0.39              0.033
          6       1     0.18          0.39              0.033
          7       1     0.18          0.39              0.033
          8       1     0.18          0.39              0.033
          9       1     0.18          0.39              0.033
         10       1     0.18          0.62              0.028
         11       1     0.18          0.62              0.028
         12       1     0.17          0.62              0.022
          1       2     0.17          0.62              0.049
          2       2     0.17          0.62              0.049
          3       2     0.15          0.36              0.066
          4       2     0.15          0.36              0.066
          5       2     0.18          0.39              0.115
          6       2     0.18          0.39              0.115
          7       2     0.18          0.39              0.115
          8       2     0.18          0.39              0.115
          9       2     0.18          0.39              0.115
         10       2     0.18          0.62              0.103
         11       2     0.18          0.62              0.103
         12       2     0.17          0.62              0.049

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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            56111
   Rejected, NCEI suspect/erroneous 39
   Rejected, METAR cross-check      0
   Full detail                      KGWO_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 8783 | 1-min ASOS hrs 8784
      Calms 94 | Variable winds 20 | Cloud subs 8 | Temp subs 3
      Errors 0 | Warnings 359
   Year 2022
      Upper air soundings 774 | Surface obs 8784 | 1-min ASOS hrs 8784
      Calms 46 | Variable winds 5 | Cloud subs 1 | Temp subs 1
      Errors 0 | Warnings 356
   Year 2023
      Upper air soundings 758 | Surface obs 8782 | 1-min ASOS hrs 8784
      Calms 445 | Variable winds 124 | Cloud subs 9 | Temp subs 6
      Errors 0 | Warnings 358
   Year 2024
      Upper air soundings 754 | Surface obs 8787 | 1-min ASOS hrs 8808
      Calms 643 | Variable winds 157 | Cloud subs 13 | Temp subs 9
      Errors 0 | Warnings 357
   Year 2025
      Upper air soundings 738 | Surface obs 8558 | 1-min ASOS hrs 8760
      Calms 414 | Variable winds 90 | Cloud subs 25 | Temp subs 17
      Errors 0 | Warnings 356

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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    99.8%    99.0%   100.0%    99.9%      99.7%   PASS
      2022    99.8%   100.0%    99.9%   100.0%      99.9%   PASS
      2023    99.5%    97.4%    97.2%    99.2%      98.3%   PASS
      2024    99.3%    95.5%    96.4%    99.1%      97.6%   PASS
      2025    97.5%    97.6%    94.1%    96.6%      96.4%   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     12.1 m/s   -10.6 C    36.7 C           0                0
      2022     14.1 m/s   -12.8 C    38.2 C           0                0
      2023     12.9 m/s    -3.9 C    40.0 C           0                0
      2024     14.8 m/s   -12.8 C    38.9 C           0                0
      2025     14.2 m/s   -10.6 C    38.9 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         94            28        8732
      2022         46             9        8751
      2023        445           146        8614
      2024        637           213        8571
      2025        414           311        8449

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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
      --------------------   ---------   -----   --------------------------------
      KGWO2021.sfc                1.47    8784   3eb1089c29cafa5da80a72565252c317
      KGWO2021.pfl                0.57       -   9c739a160a1a1acfaaf2a65f0b930cd6
      KGWO2021US.sfc              1.47    8784   245a445715f2f72a664da7f5c84d58ff
      KGWO2021US.pfl              0.57       -   9c739a160a1a1acfaaf2a65f0b930cd6
      KGWO2022.sfc                1.47    8784   ec12560b3db99d1faaf18c8b475fddf7
      KGWO2022.pfl                0.57       -   8e0a83333f3aad8c14f8295aa2202443
      KGWO2022US.sfc              1.47    8784   fd8192d0ce32d7f992c812ad5fdb404c
      KGWO2022US.pfl              0.57       -   8e0a83333f3aad8c14f8295aa2202443
      KGWO2023.sfc                1.47    8784   53bc53e393f7a26438353ee610edaef2
      KGWO2023.pfl                0.57       -   5cbc2a6ed3362630f621121545203fa9
      KGWO2023US.sfc              1.47    8784   2b94eb1c13cc0ec7cf59d5b4ee235d1b
      KGWO2023US.pfl              0.57       -   5cbc2a6ed3362630f621121545203fa9
      KGWO2024.sfc                1.48    8808   55748566f6bd5158f4f61b0cf6acd34a
      KGWO2024.pfl                0.57       -   0eee6f797733d6cb1704ef26441c11c3
      KGWO2024US.sfc              1.48    8808   0b41b474879a4221cf25263db609764a
      KGWO2024US.pfl              0.57       -   0eee6f797733d6cb1704ef26441c11c3
      KGWO2025.sfc                1.47    8784   90fbe2b624ab5c535b06217fa00eb6b6
      KGWO2025.pfl                0.57       -   adb0e03e867de530135bcb949b22f395
      KGWO2025US.sfc              1.47    8784   b6c9f25f9295898eb866f8d3cdfb233c
      KGWO2025US.pfl              0.57       -   adb0e03e867de530135bcb949b22f395

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End of report -- KGWO 2021-2025
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