AbstractTwo comparative studies have been performed to evaluate the accuracy of Chinese Aircraft Meteorological Data Relay (AMDAR) weather reports. The comparison between AMDAR reports and radiosonde observations shows that the root mean square differences (RMSDs) of temperature, wind speed and wind direction are 1.06 °C, 1.95 m s-1, and 22°, respectively within a spatial range of ≤20 km and temporal window of ≤15 min. The comparison between AMDAR reports collected by different aircraft reveals that observation uncertainties of temperature, wind speed and wind direction are 0.59 °C, 0.90 m s-1 and 12°, respectively. The spatial and temporal representativeness as well as environmental factors that may affect the evaluation results are also discussed in details in the two comparative studies. Results of the present study provide valuable information and high confidence for the application of Chinese AMDAR in numerical weather prediction models.
Journal of Atmospheric and Oceanic Technology – American Meteorological Society
Published: Feb 21, 2018
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