Preprints
https://doi.org/10.5194/egusphere-2026-862
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/egusphere-2026-862
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
27 Feb 2026
| 27 Feb 2026
Status: this preprint is open for discussion and under review for The Cryosphere (TC).
Brief communication: First-year MRR observations at Great Wall Station, Antarctic Peninsula region
Abstract. We report the first-year (March 2024–November 2025) of observations of a Micro Rain Radar (MRR) deployed at Great Wall Station in the Antarctic Peninsula. We imposed quality control to raw MRR data and identified a surface precipitation (snowfall) occurrence of 0.32 (0.23). The median radar reflectivity of snowfall is approximately 9 dBZ, exhibiting minimal variation with height as caused by frequent shallow snowfall. Blowing snow can significantly increase (decrease) the snow occurrence (median radar reflectivity) to as high as 0.7 km. We further developed a localized Ze (equivalent radar reflectivity) – S (snowfall rate) parameterization, and identified a systematic underestimation of cumulative snowfall profiles in ERA5 products.
How to cite. Sun, J., Lv, J., Li, H., Zhang, W., Tian, B., and Ding, M.: Brief communication: First-year MRR observations at Great Wall Station, Antarctic Peninsula region, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2026-862, 2026.
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Jiayi Sun
State Key Laboratory of Severe Weather Meteorological Science and Technology, Chinese Academy of Meteorological Sciences, Beijing, China
Junmei Lv
State Key Laboratory of Severe Weather Meteorological Science and Technology, Chinese Academy of Meteorological Sciences, Beijing, China
State Key Laboratory of Severe Weather Meteorological Science and Technology, Chinese Academy of Meteorological Sciences, Beijing, China
Wenqian Zhang
State Key Laboratory of Severe Weather Meteorological Science and Technology, Chinese Academy of Meteorological Sciences, Beijing, China
Biao Tian
State Key Laboratory of Severe Weather Meteorological Science and Technology, Chinese Academy of Meteorological Sciences, Beijing, China
Minghu Ding
CORRESPONDING AUTHOR
State Key Laboratory of Severe Weather Meteorological Science and Technology, Chinese Academy of Meteorological Sciences, Beijing, China
Key Laboratory of Polar Atmosphere−Ocean−Ice System for Weather and Climate, Ministry of Education, Shanghai, China
Short summary
This study reports the first-year Micro Rain Radar observations from Great Wall Station (March 2024–November 2025). Surface precipitation (snowfall) occurs 0.32 (0.23), and the radar signal changes little with height, indicating frequent shallow snowfall. Wind effects are weak below 10 m s⁻¹ but strong at higher speeds, consistent with blowing snow affecting signals up to 0.7 km. A locally fitted radar reflectivity–snowfall rate relationship shows ERA5 underestimates cumulative snowfall.
This study reports the first-year Micro Rain Radar observations from Great Wall Station (March...