CHS005 Site Information
Geolocation Data
| Station ID |
| Station Number |
| Location |
| County |
| Date Installed |
| Latitude/Longitude |
| Site Elevation |
| CHS005 |
| 005 |
| Chesterfield, MO |
| St. Louis County |
| November 8th, 2025 |
| 38.62°, -90.58° |
| 201 m (659 ft) above Mean Sea-Level |
Instrumentation
Thies Clima 4.3821.31.318 2D Ultrasonic Anemometer
Measured at a height of 10 meters.
Range: 0 – 50 m/s, 0 – 360°
Accuracy: ± 0.1 m/s rms (< 5 m/s), ±2% rms (5 … 85 m/s), ± 1° @ WS 1 … 60 m/s
Measures horizontal wind speed and direction.
R. M. Young 41372VC Temperature and Humidity Probe
Measured at a height of 2 meters.
Range: -50 to +50°C, 0 to 100%RH
Accuracy: ± 0.3°C @ 0°C , ± 3% (10 to 90%RH), ± 4% (0 to 10 & 90 to 100%RH) @ 20°C
Measures temperature and relative humidity.
Vaisala PTB101B Barometric Pressure Sensor
Range: 600- 1060 hPa
Accuracy: ±0.5 hPa @ 20°C
Measures station pressure.
R. M. Young 52202 Heated Tipping Bucket Rain Gauge
Range: 0.1 mm per tip
Measured at a height of 5 meters.
Accuracy: 2% up to 25 mm/hr, 3% up to 50 mm/hr
Measures liquid precipitation.
The Eppley Laboratory Precision Spectral Pyranometer
Range: 0 to 2800 W m-2
Accuracy: ±3-4% Absolute
Measures solar radiation.
Data Recording and Distribution
Campbell Scientific CR10X Datalogger For Measurement and Control
Records measurements from all instruments and outputs data via PakBus serial pakets to USR-W610 serial server every 10 seconds, 1 minute, 1 hour, and 1 day:
- Date Time (YYYY-MM-DD HH:MM:SS)
- Latitude (deg)
- Longitude (deg)
- Altitude (m)
- Minimum Battery Voltage (V)
- Average CR10X Panel Temperature (°C)
- 10m Average Wind Speed (m/s)
- 10m Maximum Wind Speed (m/s)
- 10m Maximum WMO 3 Second Gust (m/s)
- 10m Average Wind Direction (°)
- 2m Average Temperature (°C)
- 2m Average Relative Humidity (%)
- 2m Average Dew Point (°C)
- 2m Average Wet Bulb Temperature (°C)
- 2m Average Mixing Ratio (g/kg)
- 2m Average Equivalent Potential Temperature (°K)
- Average Station Pressure (hPa)
- Average Mean Sea-Level Pressure (hPa)
- Average Altimeter Setting (inHg)
- Average Density Altitude (ft)
- Average Pressure Altitude (ft)
- Total Minutely Rainfall (in)
- Total Hourly Rainfall (in)
- Total Daily Rainfall (in)
- Average Flux Density (W/m2)
PUSR USR-W610 1 LAN Port Serial to WiFi Converter
USR-W610 connects to CR10X via serial cable through SC105 CS I/O to 9-Pin RS-232 DCE Synchronous Interface. PakBus data from CR10X is received onto local serial server.
Arduino MKR 1010 Wifi with Ethernet ETH Shield
MKR 1010 with ETH Shield reads PakBus data from CR10X over USR-W610 serial server via ethernet and uploads applicable 1 minute data via HTTPGet request query after valid data input over WiFi. Local data are stored on SD card every 10 seconds, 1 minute, 1 hour, and 1 day.
Web Server
PHP script extracts data values from Arduino query and inserts them into MySQL 8 database.
1 minute data uploaded to the Met Instruments Project and Weather Underground.
5 minute data uploaded to the Citizen Weather Observer Program.
Site Images
NOT AVAILABLE – WORK IN PROGRESS