Revisiting large-scale interception patterns constrained by a synthesis of global experimental data
-
Published:2022-11-10
Issue:21
Volume:26
Page:5647-5667
-
ISSN:1607-7938
-
Container-title:Hydrology and Earth System Sciences
-
language:en
-
Short-container-title:Hydrol. Earth Syst. Sci.
Author:
Zhong Feng, Jiang Shanhu, van Dijk Albert I. J. M., Ren Liliang, Schellekens Jaap, Miralles Diego G.ORCID
Abstract
Abstract. Rainfall interception loss remains one of the most uncertain fluxes in the global water balance, hindering water management in forested regions and
precluding an accurate formulation in climate models. Here, a synthesis of interception loss data from past field experiments conducted worldwide is
performed, resulting in a meta-analysis comprising 166 forest sites and 17 agricultural plots. This meta-analysis is used to constrain a global
process-based model driven by satellite-observed vegetation dynamics, potential evaporation and precipitation. The model considers sub-grid
heterogeneity and vegetation dynamics and formulates rainfall interception for tall and short vegetation separately. A global, 40-year
(1980–2019), 0.1∘ spatial resolution, daily temporal resolution dataset is created, analysed and validated against in situ data. The
validation shows a good consistency between the modelled interception and field observations over tall vegetation, both in terms of correlations and
bias. While an underestimation is found in short vegetation, the degree to which it responds to in situ representativeness errors and difficulties
inherent to the measurement of interception in short vegetated ecosystems is unclear. Global estimates are compared to existing datasets, showing
overall comparable patterns. According to our findings, global interception averages to 73.81 mm yr−1 or
10.96 × 103 km3 yr−1, accounting for 10.53 % of continental rainfall and approximately 14.06 % of terrestrial
evaporation. The seasonal variability of interception follows the annual cycle of canopy cover, precipitation, and atmospheric demand for
water. Tropical rainforests show low intra-annual vegetation variability, and seasonal patterns are dictated by rainfall. Interception shows a
strong variance among vegetation types and biomes, supported by both the modelling and the meta-analysis of field data. The global synthesis of
field observations and the new global interception dataset will serve as a benchmark for future investigations and facilitate large-scale
hydrological and climate research.
Funder
H2020 European Research Council National Natural Science Foundation of China Fundamental Research Funds for the Central Universities China Scholarship Council
Publisher
Copernicus GmbH
Subject
General Earth and Planetary Sciences,General Engineering,General Environmental Science
Reference126 articles.
1. Acharya, S., McLaughlin, D., Kaplan, D., and Cohen, M. J.:
A proposed method for estimating interception from near-surface soil moisture response, Hydrol. Earth Syst. Sci., 24, 1859–1870, https://doi.org/10.5194/hess-24-1859-2020, 2020. 2. Armstrong, R., Brodzik, M., Knowles, K., and Savoie, M.:
Global monthly EASE-grid snow water equivalent climatology, version 1, National Snow and Ice Data Center Distributed Active Archive Center, Boulder, Colorado USA, https://doi.org/10.5067/KJVERY3MIBPS, 2005. 3. Beck, H. E., Wood, E. F., Pan, M., Fisher, C. K., Miralles, D. G., Van Dijk, A. I., McVicar, T. R., and Adler, R. F.:
MSWEP V2 global 3-hourly 0.1 precipitation: methodology and quantitative assessment, B. Am. Meteorol. Soc., 100, 473–500, https://doi.org/10.1175/BAMS-D-17-0138.1, 2019. 4. Béland, M. and Baldocchi, D. D.:
Vertical structure heterogeneity in broadleaf forests: Effects on light interception and canopy photosynthesis, Agr. Forest. Meteorol., 307, 108525, https://doi.org/10.1016/j.agrformet.2021.108525, 2021. 5. Braghiere, R. K., Quaife, T., Black, E., He, L., and Chen, J.:
Underestimation of global photosynthesis in Earth system models due to representation of vegetation structure, Global Biogeochem. Cy., 33, 1358–1369, https://doi.org/10.1029/2018GB006135, 2019.
Cited by
6 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
|
|