Leaf onset in the northern hemisphere triggered by daytime temperature
Shilong Piao,Jianguang Tan,Anping Chen,Yongshuo H. Fu,Philippe Ciais,Qiang Liu,Ivan A. Janssens,Sara Vicca,Zhenzhong Zeng,Su-Jong Jeong,Yue Li,Ranga B. Myneni,Shushi Peng,Miaogen Shen,Josep Peñuelas +14 more
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TLDR
This work shows that the interannual anomalies of LUD during 1982–2011 are triggered by daytime (Tmax) more than by nighttime temperature (Tmin), and suggests a new conceptual framework of leaf onset using daytime temperature to improve the performance of phenology modules in current Earth system models.Abstract:
Recent warming significantly advanced leaf onset in the northern hemisphere. This signal cannot be accurately reproduced by current models parameterized by daily mean temperature (Tmean). Here using in situ observations of leaf unfolding dates (LUDs) in Europe and the United States, we show that the interannual anomalies of LUD during 1982–2011 are triggered by daytime (Tmax) more than by nighttime temperature (Tmin). Furthermore, an increase of 1 Ci nTmax would advance LUD by 4.7 days in Europe and 4.3 days in the United States, more than the conventional temperature sensitivity estimated from Tmean. The triggering role of Tmax, rather than the Tmin or Tmean variable, is also supported by analysis of the large-scale patterns of satellite-derived vegetation green-up in spring in the northern hemisphere (430N). Our results suggest a new conceptual framework of leaf onset using daytime temperature to improve the performance of phenology modules in current Earth systemread more
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Plant phenological responses to climate change on the Tibetan Plateau: research status and challenges
Miaogen Shen,Miaogen Shen,Shilong Piao,Shilong Piao,Shilong Piao,Tsechoe Dorji,Qiang Liu,Nan Cong,Xiaoqiu Chen,Shuai An,Shiping Wang,Shiping Wang,Tao Wang,Gengxin Zhang +13 more
TL;DR: In this paper, a review of the role of phenology in ecosystem responses and feedback processes to climate change remains to be solved, and the authors recommend that addressing the following questions should be a high priority: How did other phenological events change, such as flowering and fruiting phenology? What are the influences from environmental changes other than temperature and precipitation, including human activities such as grazing? How does phenological change influence ecosystem structure and function at different scales and feedback to climate system?
Journal ArticleDOI
Land surface phenology derived from normalized difference vegetation index (NDVI) at global FLUXNET sites
Chaoyang Wu,Dailiang Peng,Kamel Soudani,Lukas Siebicke,Christopher M. Gough,M. Altaf Arain,Gil Bohrer,Peter M. Lafleur,Matthias Peichl,Alemu Gonsamo,Shiguang Xu,Bin Fang,Quansheng Ge +12 more
TL;DR: In this article, a comprehensive understanding of the potentials of current algorithms to detect the start and end for growing season (SOS and EOS) from remote sensing is still lacking.
Journal ArticleDOI
Climatic and associated cryospheric, biospheric, and hydrological changes on the Tibetan Plateau: a review
Sadia Bibi,Lei Wang,Lei Wang,Xiuping Li,Jing Zhou,Deliang Chen,Deliang Chen,Tandong Yao,Tandong Yao +8 more
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Pan European Phenological database (PEP725): a single point of access for European data
Barbara Templ,Elisabeth Koch,Kjell Bolmgren,Markus Ungersböck,Anita Paul,Helfried Scheifinger,This Rutishauser,Montserrat Busto,Frank-M. Chmielewski,Lenka Hájková,Sabina Hodzic,Frank Kaspar,Barbara Pietragalla,Ramiro Romero-Fresneda,Anne Tolvanen,Višnja Vučetič,Kirsten Zimmermann,Ana Zust +17 more
TL;DR: Users of the PEP725 database have studied a diversity of topics ranging from climate change impact, plant physiological question, phenological modeling, and remote sensing of vegetation to ecosystem productivity.
Journal ArticleDOI
Contrasting responses of autumn-leaf senescence to daytime and night-time warming
Chaoyang Wu,Xiaoyue Wang,Huanjiong Wang,Philippe Ciais,Josep Peñuelas,Ranga B. Myneni,Ankur R. Desai,Christopher M. Gough,Alemu Gonsamo,Andrew Black,Rachhpal S. Jassal,Weimin Ju,Wenping Yuan,Yongshuo H. Fu,Miaogen Shen,Shihua Li,Ronggao Liu,Jing M. Chen,Quansheng Ge +18 more
TL;DR: The notion of prolonged growth under higher autumn temperatures is challenged, suggesting instead that leaf senescence in the Northern Hemisphere will begin earlier than currently expected, causing a positive climate feedback.
References
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