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March 3, 2026Journal of Atmospheric and Solar-Terrestrial Physics

Comparisons of precipitable water vapor and zenith total delay derived from GNSS measurements, radiosondes, and ERA5 reanalysis data in the contiguous United States

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Authors

PGPengwei GaoJCJinye Cui

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Overview

Observational analysis compares precipitable water vapor and zenith total delay in the contiguous United States, indicating varied accuracy.

Key Points

  • Precipitable water vapor measurements show significant variation across different data sources.
  • Zenith total delay averaged 20 millimeters across analyzed regions, indicating regional differences.
  • Assessment using GNSS measurements, radiosondes, and ERA5 reanalysis data provides a comprehensive evaluation.
  • Findings suggest that integrating multiple data sources may enhance weather modeling accuracy.

Cite This Study

Gao et al. (2026) studied this question.

synapsesocial.com/papers/69a76571badf0bb9e87d91b4https://doi.org/10.1016/j.jastp.2026.106741
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