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--- aermet [2025/05/15 07:40] – murilogerber
+++ aermet [2025/05/15 11:05] (current) – [3.2.3. Upper Air Data] murilogerber
@@ Line 2: / Line 2: @@
-With the output data from [[aersurface|AERSURFACE]], we can begin running AERMET.
+With the output data from [[aersurface|AERSURFACE]], we can begin running **AERMET**.
 ===== 3.1. Introduction =====
-AERMET is a meteorological preprocessor used with the [[aermod|AERMOD]] air dispersion model. Its main function is to process surface and upper-air meteorological data to generate the necessary input files for [[aermod|AERMOD]] simulations. AERMET calculates key atmospheric parameters such as wind profiles, atmospheric stability, temperature gradients, and turbulence characteristics. These parameters are essential for accurately modeling how pollutants disperse in the atmosphere.
+**AERMET** is a meteorological preprocessor used with the [[aermod|AERMOD]] air dispersion model. Its main function is to process surface and upper-air meteorological data to generate the necessary input files for [[aermod|AERMOD]] simulations. **AERMET** calculates key atmospheric parameters such as wind profiles, atmospheric stability, temperature gradients, and turbulence characteristics. These parameters are essential for accurately modeling how pollutants disperse in the atmosphere.
 ^ Aspect ^ Details ^
 | Objective | Preprocess meteorological data for [[aermod|AERMOD]], generating atmospheric profiles and planetary boundary layer (PBL) parameters. |
-| Inputs | Surface data, upper-air sounding (radiosonde), and site characteristics (Surface roughness length (Zo), Albedo (Alb), and Bowen ratio (Bo)). |
+| Inputs | Surface data, upper-air sounding (radiosonde), and site characteristics (Surface roughness length (**Zo**), Albedo (**Alb**), and Bowen ratio (**Bo**)). |
-| Outputs | • .SFC file - Processed surface data (10m wind, temperature, turbulence parameters) \ • .PFL file - Vertical atmospheric profiles (wind/temperature aloft, PBL height) |
+| Outputs | • ''.SFC file'' - Processed surface data (10m wind, temperature, turbulence parameters) \ • ''.PFL file'' - Vertical atmospheric profiles (wind/temperature aloft, PBL height) |
 ===== 3.2. Required Files for AERMET =====
@@ Line 18: / Line 18: @@
 First, download the executable from the [[https://www.epa.gov/scram/meteorological-processors-and-accessory-programs|EPA AERMET]] website.
-Navigate to the MODEL CODE section and click the executable compatible with your operating system version, as shown in [[#Figure 1|Figure 1]]. Extract the downloaded file to the folder:
+Navigate to the **MODEL CODE** section and click the executable compatible with your operating system version, as shown in [[#Figure 1|Figure 1]]. Extract the downloaded file to the folder:
 ''C:\Users\Cliente\Desktop\AermodTutorial\3.AERMET''.
@@ Line 40: / Line 40: @@
 </WRAP>
-Now search for the file named ''724397-54831-2024.gz'' (for the Central Illinois Regional Airport station), download it, and extract it to the folder:
+Now search for the file named ''724397-54831-2024.gz'' (for the ''Central Illinois Regional Airport station''), download it, and extract it to the folder:
 ''C:\Users\Cliente\Desktop\AermodTutorial\3.AERMET''.
 Finally, rename the file to ''724397-54831-2024.dat'', create a subfolder named ''Surface_data'', and move the file there, as shown in [[#Figure 3|Figure 3]]:
@@ Line 53: / Line 53: @@
 ==== 3.2.3. Upper Air Data ====
-Lastly, download the radiosonde data from the [[https://www.ncei.noaa.gov/data/integrated-global-radiosonde-archive/access/data-por/|radiosonde archive]], searching for the station ''USM00074560-data'' (for Lincoln, IL, the closest radiosonde station to Bloomington).
+Lastly, download the radiosonde data from the [[https://www.ncei.noaa.gov/data/integrated-global-radiosonde-archive/access/data-por/|radiosonde archive]], searching for the station ''USM00074560-data'' (for ''Lincoln, IL'', the closest radiosonde station to Bloomington).
 Download the file as shown in [[#Figure 4|Figure 4]], and extract it to:
 ''C:\Users\Cliente\Desktop\AermodTutorial\3.AERMET''.
@@ Line 78: / Line 78: @@
 Now that all required input data is ready, we will split the processing into two stages:
-Stage 1: Extracts surface and upper-air data from archived formats and performs quality control.
+  * Stage 1: Extracts surface and upper-air data from archived formats and performs quality control.
+  * Stage 2: Processes Stage 1 outputs to calculate boundary layer parameters for [[aermod|AERMOD]].
-Stage 2: Processes Stage 1 outputs to calculate boundary layer parameters for [[aermod|AERMOD]].
 The workflow is illustrated in [[#Figure 6|Figure 6]]:
@@ Line 112: / Line 111: @@
 xdates 2024/1/1 to 2024/1/2
 </code>
+=== 3.3.1.1. Stage 1 AERMET Configuration ===
+== JOB Section ==
+| Line | Description |
+| messages m1.mes | Log file storing processing messages |
+| report m1.rpt | Detailed report file with processing results |
+== UPPERAIR Section ==
+| Line | Description |
+| data .\Upper_Air_data\USM.txt IGRA | Path to raw radiosonde data in IGRA format |
+| extract upper.iqa | Output file with extracted data (pre-QA) |
+| location 00074560 40.15N 89.33W 5 179.2 | Station details: \ • Code: 00074560 \ • Coordinates: 40.15N 89.33W \ • Anemometer height: 5m \ • Terrain elevation: 179.2m |
+| xdates 2024/1/1 to 2024/12/31 | Processing period (full year) |
+| qaout upper.oqa | Final post-QA output file |
+== SURFACE Section ==
+| Line | Description |
+| data .\Surface_data\724397-54831-2024.dat ISHD | Surface data in ISHD format (Integrated Surface Hourly Data) |
+| extract surface.iqa | Extracted data before QA |
+| qaout surface.oqa | Validated data ready for use |
+| location 54831 40.66N 89.69W 5 | Station details: \ • WBAN code: 54831 \ • Coordinates: 40.66N 89.69W \ • Measurement height: 5m |
+| xdates 2024/1/1 to 2024/12/31 | Time window matching upper-air data |
 ==== 3.3.2. AERMET STAGE 2 ====
@@ Line 132: / Line 153: @@
 AERSURF BL_2024_Imp_Can.sfc
 </code>
+=== 3.3.2.1. Stage 2 AERMET Configuration ===
+== METPREP Section ==
+| Line | Description |
+| OUTPUT METAR.SFC | Processed surface data output file |
+| PROFILE METAR.PFL | Processed vertical profiles output file |
+| LOCATION 000001 40.47N 88.97W 0 | Site details: \ • Code: 000001 \ • Coordinates: 40.47N 88.97W \ • Reference height: 0m |
+| METHOD REFLEVEL SUBNWS | Reference height method (NWS standard) |
+| METHOD WIND_DIR RANDOM | Wind direction handling for missing data (random imputation) |
+| NWS_HGT WIND 6.1 | NWS standard wind measurement height (6.1m) |
+| AERSURF BL_2024_Imp_Can.sfc | Surface characteristics file from [[aersurface|AERSURFACE]] |
 ===== 3.4 Running AERMET =====
 Open Command Prompt and run:
-Navigate to the folder:
+  - Navigate to the folder: ''cd C:\Users\Cliente\Desktop\AermodTutorial\3.AERMET''
-''cd C:\Users\Cliente\Desktop\AermodTutorial\3.AERMET''
+  - Execute Stage 1: ''aermet aermet_STG1.txt'' ([[#Figure 8|Figure 8]])
+  - Execute Stage 2: ''aermet aermet_STG2.txt'' ([[#Figure 9|Figure 9]])
-Execute Stage 1:
-''aermet aermet_STG1.txt'' ([[#Figure 8|Figure 8]])
-Execute Stage 2:
-''aermet aermet_STG2.txt'' ([[#Figure 9|Figure 9]])
 == Figure 8 ==
@@ Line 161: / Line 188: @@
 </WRAP>
-With this completed, we can proceed to [[aermap|AERMAP]].
+===== What is next? =====
+With this completed, we can proceed to [[aermap|AERMAP]],  which is the last processor before moving on to [[aermod|AERMOD]].
+Attachment
+Here you can download the folder I used to create this document. It is important that you use it only for comparison purposes or in case you are unable to make progress on the project. Attached: {{ :3.aermet.rar | aermet.rar}}