Evaluation of Accuracy of Chinese AMDAR Data for 2015

Evaluation of Accuracy of Chinese AMDAR Data for 2015 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Atmospheric and Oceanic Technology American Meteorological Society

Evaluation of Accuracy of Chinese AMDAR Data for 2015

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Publisher
American Meteorological Society
Copyright
Copyright © American Meteorological Society
ISSN
1520-0426
D.O.I.
10.1175/JTECH-D-17-0095.1
Publisher site
See Article on Publisher Site

Abstract

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

Journal of Atmospheric and Oceanic TechnologyAmerican Meteorological Society

Published: Feb 21, 2018

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