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Updated: Apr 7, 2026

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Published on: December 12, 2013
Precipitation deficits increase high diurnal temperature range extremes.
Bin He1, Ling Huang1, Qianfeng Wang2
11] College of Global Change and Earth System Science, Beijing Normal University, Beijing 100875, China [2] Joint Center for Global Change Studies, Beijing 100875, China.
Precipitation deficits increase extreme diurnal temperature range (DTR) in China. Dry conditions raise the probability of DTR extremes, especially in summer, impacting climate anomaly interpretation.
Area of Science:
- Climatology
- Meteorology
- Environmental Science
Background:
- Observed links exist between precipitation deficits and extreme heat.
- The impact of rising maximum temperatures on diurnal temperature range (DTR) extremes remains unclear.
Purpose of the Study:
- To investigate trends in DTR extremes in China from 1971-2013.
- To analyze the relationship between DTR extremes and precipitation deficits over four decades.
Main Methods:
- Utilized observational meteorological data from China.
- Analyzed trends in percentage of high DTR days (%HDD) and maximum high DTR duration (MHDD).
- Examined seasonal relationships between precipitation deficits and DTR extremes.
Main Results:
- Identified heterogeneous seasonal trends in %HDD and MHDD across China.
- Observed a significant negative relationship between precipitation deficits and DTR extremes seasonally.
- Found the strongest negative relationship in summer, with dry conditions increasing DTR extreme probability by 22%.
Conclusions:
- Precipitation deficits are linked to increased DTR extremes in China.
- Findings highlight the inhomogeneous behavior of DTR extremes and their connection to precipitation.
- This research provides crucial insights for understanding climate anomalies.
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