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Regional pollen-based Holocene temperature and precipitation patterns depart from the Northern Hemisphere mean trendsстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Herzschuh Ulrike, Böhmer Thomas, Manuel Chevalier, Dallmeyer Anne, Chenzhi Li, Xianyong Cao, Raphaël Hébert, Peyron Odile, Nazarova Larisa, Novenko Elena Y., Jungjae Park, Rudaya Natalia A., Schlütz Frank, Shumilovskikh Lyudmila S., Tarasov Pavel E., Yongbo Wang, Ruilin Wen, Xu Qinghai, Zhuo Zheng
- Журнал: Climate of the Past
- Год издания: 2023
- Издательство: European Geosciences Union (EGU).
- Местоположение издательства: Germany
- DOI: 10.5194/egusphere-2022-127
- Аннотация: A mismatch between model- and proxy-based Holocene climate change, known as the Holocene conundrum, may partially originate from the poor spatial coverage of climate reconstructions in, for example, Asia, limiting the number of grid-cells for model-data comparisons. Here we investigate hemispheric, latitudinal, and regional mean time-series as well as anomaly maps of pollen-based reconstructions of mean annual temperature, mean July temperature, and annual precipitation from 1676 records in the Northern Hemisphere extratropics. Temperature trends show strong latitudinal patterns and differ between (sub-)continents. While the circum-Atlantic regions in Europe and eastern North America show a pronounced mid-Holocene temperature maximum, western North America shows only weak changes and Asia mostly a continuous Holocene temperature increase but with strong latitudinal differences. Likewise, precipitation trends show certain regional peculiarities such as the pronounced mid-Holocene optimum between 30 and 40° N in Asia and Holocene increasing trends in Europe and western North America which can all be linked with Holocene changes of the regional circulation pattern linked to temperature change. Given a background of strong regional heterogeneity, we conclude that the calculation of global or hemispheric means which initiated the Holocene conundrum debate should focus more on understanding the spatio-temporal patterns and their regional drivers.
- Добавил в систему: Новенко Елена Юрьевна