Drought Legacy in Sub-Seasonal Vegetation State and Sensitivity to Climate Over the Northern Hemisphere
(2022) In Geophysical Research Letters 49(15).- Abstract
Droughts affect ecosystems at multiple time scales, but their sub-seasonal legacy effects on vegetation activity remain unclear. Combining the satellite-based enhanced vegetation index MODIS EVI with a novel location-specific definition of the growing season, we quantify drought impacts on sub-seasonal vegetation activity and the subsequent recovery in the Northern Hemisphere. Drought legacy effects are quantified as changes in post-drought greenness and sensitivity to climate. We find that greenness losses under severe drought are partially compensated by a ∼+5% greening within 2–6 growing-season months following the droughts, both in woody and herbaceous vegetation but at different timings. In addition, post-drought sensitivity of... (More)
Droughts affect ecosystems at multiple time scales, but their sub-seasonal legacy effects on vegetation activity remain unclear. Combining the satellite-based enhanced vegetation index MODIS EVI with a novel location-specific definition of the growing season, we quantify drought impacts on sub-seasonal vegetation activity and the subsequent recovery in the Northern Hemisphere. Drought legacy effects are quantified as changes in post-drought greenness and sensitivity to climate. We find that greenness losses under severe drought are partially compensated by a ∼+5% greening within 2–6 growing-season months following the droughts, both in woody and herbaceous vegetation but at different timings. In addition, post-drought sensitivity of herbaceous vegetation to hydrological conditions increases noticeably at high latitudes compared with the local normal conditions, regardless of the choice of drought time scales. In general, the legacy effects on sensitivity are larger in herbaceous vegetation than in woody vegetation.
(Less)
- author
- Wu, Minchao
LU
; Manzoni, Stefano ; Vico, Giulia ; Bastos, Ana ; de Vries, Franciska T. and Messori, Gabriele
- organization
- publishing date
- 2022
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- drought legacy, ecosystem resilience, growing season-based analysis, sub-seasonal vegetation sensitivity
- in
- Geophysical Research Letters
- volume
- 49
- issue
- 15
- article number
- e2022GL098700
- publisher
- American Geophysical Union (AGU)
- external identifiers
-
- scopus:85135806425
- ISSN
- 0094-8276
- DOI
- 10.1029/2022GL098700
- language
- English
- LU publication?
- yes
- id
- 9c0d2a07-0f17-4b39-b135-78e9d1dd317a
- date added to LUP
- 2022-10-06 12:14:42
- date last changed
- 2023-05-16 13:24:33
@article{9c0d2a07-0f17-4b39-b135-78e9d1dd317a, abstract = {{<p>Droughts affect ecosystems at multiple time scales, but their sub-seasonal legacy effects on vegetation activity remain unclear. Combining the satellite-based enhanced vegetation index MODIS EVI with a novel location-specific definition of the growing season, we quantify drought impacts on sub-seasonal vegetation activity and the subsequent recovery in the Northern Hemisphere. Drought legacy effects are quantified as changes in post-drought greenness and sensitivity to climate. We find that greenness losses under severe drought are partially compensated by a ∼+5% greening within 2–6 growing-season months following the droughts, both in woody and herbaceous vegetation but at different timings. In addition, post-drought sensitivity of herbaceous vegetation to hydrological conditions increases noticeably at high latitudes compared with the local normal conditions, regardless of the choice of drought time scales. In general, the legacy effects on sensitivity are larger in herbaceous vegetation than in woody vegetation.</p>}}, author = {{Wu, Minchao and Manzoni, Stefano and Vico, Giulia and Bastos, Ana and de Vries, Franciska T. and Messori, Gabriele}}, issn = {{0094-8276}}, keywords = {{drought legacy; ecosystem resilience; growing season-based analysis; sub-seasonal vegetation sensitivity}}, language = {{eng}}, number = {{15}}, publisher = {{American Geophysical Union (AGU)}}, series = {{Geophysical Research Letters}}, title = {{Drought Legacy in Sub-Seasonal Vegetation State and Sensitivity to Climate Over the Northern Hemisphere}}, url = {{http://dx.doi.org/10.1029/2022GL098700}}, doi = {{10.1029/2022GL098700}}, volume = {{49}}, year = {{2022}}, }