What question did this study set out to answer?

Determine whether the frequency and severity of climatic extremes changed globally during the second half of the twentieth century using daily temperature and precipitation records.

January 1, 2002Climate ResearchOpen Access

Observed coherent changes in climatic extremes during the second half of the twentieth century

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Authors

PFP. FrichMet Office LALisa V. AlexanderHealth Sciences Centre PDP. M. Della‐MartaGEO Partner (Switzerland)

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Implication

Global time-series analysis reveals widespread shifts toward warmer nights and extreme rainfall across global land areas, highlighting widespread twentieth-century climatic shifts.

Key Points

Determine whether the frequency and severity of climatic extremes changed globally during the second half of the twentieth century using daily temperature and precipitation records.
Collated approximately 3,000 annual indicator time series derived from national archives spanning 1946 to 1999 with at least 40 years of continuous data.
Evaluated 10 indicators of climatic extremes derived from daily minimum and maximum temperatures and daily precipitation totals.
Mapped multidecadal changes across all seasons to determine the proportion of global land area exhibiting statistically significant trends.
Temperature indicators demonstrated coherent spatial changes, including an increase in warm summer nights, a reduction in frost days, and a compressed intra-annual extreme temperature range.
All temperature-based indicators except one exhibited statistically significant shifts between multidecadal periods from 1946 to 1999.
Precipitation indicators showed mixed spatial patterns, but heavy rainfall events and total rainfall amounts derived from extreme wet spells significantly increased.

Cite This Study

Frich et al. (2002) studied this question.

synapsesocial.com/papers/69dbc3363d9adb00e7684f08 https://doi.org/10.3354/cr019193

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Implication

Global time-series analysis reveals widespread shifts toward warmer nights and extreme rainfall across global land areas, highlighting widespread twentieth-century climatic shifts.

Observed coherent changes in climatic extremes during the second half of the twentieth century

Discussion

Member takes

Implication

Key Points

Cite This Study

Observed coherent changes in climatic extremes during the second half of the twentieth century

Discussion

Member takes

Implication

Key Points

Cite This Study

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