6/4/2023 0 Comments Home wind speed meterHourly wind directions for both are categorized into octads, then 2-D histograms relate the directions to each other. Hourly Wind Direction Validation ¶ Hourly 10-meter Wind Direction Contingency Chartĭiagram of the hourly wind direction contingency comparison (shown as percentage) between MERRA-2 10-meter wind direction and the selected NCEI ISD files for the years 2001 - 2019. These locations are shown as the red circles on the streamline map here. Verification of the equations is accomplished with the usage of MERRA-2 10 meter winds from Jshown in this table: Latitude The computation of wind direction from MERRA-2 u and v components is based upon the information from NCAR/UCAR/EOL's quick reference on wind direction. The meteorological convention gives the direction from which the wind originates and wind direction is measured in degrees clockwise from due north. Wind Direction at a given height in degrees as the meteorological convention. More advanced weather meters like the Kestrel 5500 track nearly 20 different weather parameters, and can record the data for later analysis. Darker reds indicate a higher number of matched pairs within the 2-D histogram. A wind meter like the Kestrel 3000 will tell you all you need to know about the speed of the wind, the temperature, even humidity and heat stress information. Darker reds indicate a higher number of matched pairs within the 2-D histogram.ĭaily Average ¶ Daily Average 10-meter Wind Speedĭensity plot of the 2-D histograms comparing MERRA-2 daily wind speed with station observations from the NCEI GSOD files for 1981 – 2020. Hourly ¶ Hourly Wind Speedĭensity plot of the 2-D histograms comparing MERRA-2 hourly 10-meter wind speed with station observations from the selected NCEI ISD files for the years 2001 - 2019. Global "Summary of the Day" ( GSOD) files are used for the comparison to the daily mean MERRA-2 temperature. Selected surface sites from the NCEI Integrated Surface Database ( ISD) files are used for the hourly MERRA-2 comparisons. Therefore, ultrasonic wind sensors reduce the need for frequent calibration and maintenance. You can get data on wind speed, wind direction, rainfall, outdoor temperature, outdoor humidity, solar radiation, and UV. Our ultrasonic anemometers for sale measure wind direction and speed using ultrasonic sound waves and without the use of moving parts. It's not perfect, but we think its large sensor array will meet the needs of any weather enthusiast. In this section, MERRA-2 10-meter wind speed is compared to observations reported to the National Center for Environmental Information ( NCEI – formerly National Climatic Data Center). With its ten sensors packed into a small, reasonably-priced package, the Ambient Weather WS-2902 is our best overall pick. Savanna:18-m broadleaf trees (30%)
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