Sensitivity of gross primary productivity to climatic drivers during the summer drought of 2018 in Europe. Fu, Z., Ciais, P., Bastos, A., Stoy, P., C., Yang, H., Green, J., K., Wang, B., Yu, K., Huang, Y., Knohl, A., Šigut, L., Gharun, M., Cuntz, M., Arriga, N., Roland, M., Peichl, M., Migliavacca, M., Cremonese, E., Varlagin, A., Brümmer, C., Gourlez de la Motte, L., Fares, S., Buchmann, N., El-Madany, T., S., Pitacco, A., Vendrame, N., Li, Z., Vincke, C., Magliulo, E., & Koebsch, F. Philosophical Transactions of the Royal Society B: Biological Sciences, 375(1810):20190747, 10, 2020.
Sensitivity of gross primary productivity to climatic drivers during the summer drought of 2018 in Europe [link]Website  doi  abstract   bibtex   
In summer 2018, Europe experienced a record drought, but it remains unknown how the drought affected ecosystem carbon dynamics. Using observations from 34 eddy covariance sites in different biomes across Europe, we studied the sensitivity of gross primary productivity (GPP) to environmental drivers during the summer drought of 2018 versus the reference summer of 2016. We found a greater drought-induced decline of summer GPP in grasslands (−38%) than in forests (−10%), which coincided with reduced evapotranspiration and soil water content (SWC). As compared to the ‘normal year’ of 2016, GPP in different ecosystems exhibited more negative sensitivity to summer air temperature (Ta) but stronger positive sensitivity to SWC during summer drought in 2018, that is, a stronger reduction of GPP with soil moisture deficit. We found larger negative effects of Ta and vapour pressure deficit (VPD) but a lower positive effect of photosynthetic photon flux density on GPP in 2018 compared to 2016, which contributed to reduced summer GPP in 2018. Our results demonstrate that high temperature-induced increases in VPD and decreases in SWC aggravated drought impacts on GPP.
@article{
 title = {Sensitivity of gross primary productivity to climatic drivers during the summer drought of 2018 in Europe},
 type = {article},
 year = {2020},
 keywords = {FR_BIL,FR_HES},
 pages = {20190747},
 volume = {375},
 websites = {https://royalsocietypublishing.org/doi/10.1098/rstb.2019.0747},
 month = {10},
 day = {26},
 id = {e417a43e-83ce-33a0-b345-6c32ceb54100},
 created = {2020-09-16T10:06:20.558Z},
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 last_modified = {2020-12-16T09:57:58.325Z},
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 abstract = {In summer 2018, Europe experienced a record drought, but it remains unknown how the drought affected ecosystem carbon dynamics. Using observations from 34 eddy covariance sites in different biomes across Europe, we studied the sensitivity of gross primary productivity (GPP) to environmental drivers during the summer drought of 2018 versus the reference summer of 2016. We found a greater drought-induced decline of summer GPP in grasslands (−38%) than in forests (−10%), which coincided with reduced evapotranspiration and soil water content (SWC). As compared to the ‘normal year’ of 2016, GPP in different ecosystems exhibited more negative sensitivity to summer air temperature (Ta) but stronger positive sensitivity to SWC during summer drought in 2018, that is, a stronger reduction of GPP with soil moisture deficit. We found larger negative effects of Ta and vapour pressure deficit (VPD) but a lower positive effect of photosynthetic photon flux density on GPP in 2018 compared to 2016, which contributed to reduced summer GPP in 2018. Our results demonstrate that high temperature-induced increases in VPD and decreases in SWC aggravated drought impacts on GPP.},
 bibtype = {article},
 author = {Fu, Zheng and Ciais, Philippe and Bastos, Ana and Stoy, Paul C and Yang, Hui and Green, Julia K and Wang, Bingxue and Yu, Kailiang and Huang, Yuanyuan and Knohl, Alexander and Šigut, Ladislav and Gharun, Mana and Cuntz, Matthias and Arriga, Nicola and Roland, Marilyn and Peichl, Matthias and Migliavacca, Mirco and Cremonese, Edoardo and Varlagin, Andrej and Brümmer, Christian and Gourlez de la Motte, Louis and Fares, Silvano and Buchmann, Nina and El-Madany, Tarek S. and Pitacco, Andrea and Vendrame, Nadia and Li, Zhaolei and Vincke, Caroline and Magliulo, Enzo and Koebsch, Franziska},
 doi = {10.1098/rstb.2019.0747},
 journal = {Philosophical Transactions of the Royal Society B: Biological Sciences},
 number = {1810}
}

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