Theoretical and Applied Climatology

, Volume 138, Issue 3–4, pp 1563–1571 | Cite as

Decadal intensification of local thermal feedback of summer soil moisture over North China

  • Bei Xu
  • Haishan ChenEmail author
  • Chujie Gao
  • Gang Zeng
  • Shanlei Sun
  • Hedi Ma
  • Wenjian Hua
Original Paper


Soil moisture (SM) feedback on climate variables especially temperature is an important aspect in land-atmosphere coupling. Based on the Global Land Data Assimilation System (GLDAS) V2.0 SM data and the gridded observational temperature data, we statistically analyze the thermal feedback of SM over North China (NC). The results show that SM exerts a decreasing trend under the background of evident warming over NC, inducing a decadal enhancement of SM feedbacks on the local temperature and extreme hot events. The SM feedback contributes 6% of the total air temperature variation during 1961–2012, while it reaches 36% after the regional warming during 1994–2012. Such SM affecting temperature is mainly reflected in its feedback on daily maximum temperature, which is also intensified during the warm period. The decadal intensification is also found in the feedback of SM on hot extremes. Further analyses show that the abnormal changes of the latent and sensible heat fluxes caused by the SM anomaly are the main reasons that affect the thermal conditions. Besides, the rising Bowen ratio indicates that upward thermal transfer on the land surface is enhanced in recent years, which suggests that the atmosphere is more sensible to the abnormal heating on the ground. This consequently translates into the decadal intensification of the local thermal feedback of SM in summer over NC.


Funding information

This work was jointly supported by the National Key R&D Program (2016YFA0600702), the National Science Fund for Distinguished Young Scholars (41625019), the National Natural Science Foundation of China (41230422), the China Postdoctoral Science Foundation (2019M651665), the Open Research Fund of the State Key Laboratory of Loess and Quaternary Geology of China (SKLLQG1806), and the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).

Compliance with ethical standards

Competing interests

The authors declare that they have no conflict of interest.


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Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Key Laboratory of Meteorological Disaster, Ministry of Education (KLME) / International Joint Research Laboratory of Climate and Environment Change (ILCEC) / Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD)Nanjing University of Information Science & Technology (NUIST)NanjingChina
  2. 2.College of Atmospheric ScienceNUISTNanjingChina
  3. 3.College of OceanographyHohai UniversityNanjingChina
  4. 4.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth EnvironmentChinese Academy of SciencesXi’anChina
  5. 5.Hubei Key Laboratory for Heavy Rain Monitoring and Warning Research, Institute of Heavy RainChina Meteorological AdministrationWuhanChina

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