Evaluation of a photosynthesis-based biogenic isoprene emission scheme in JULES and simulation of isoprene emissions under present-day climate conditions

被引：74

作者：

Pacifico, F. ^{[1
,2
]}

Harrison, S. P. ^{[2
,3
]}

Jones, C. D. ^{[1
]}

Arneth, A. ^{[4
,5
]}

Sitch, S. ^{[6
]}

Weedon, G. P. ^{[1
]}

Barkley, M. P. ^{[7
]}

Palmer, P. I. ^{[7
]}

Serca, D. ^{[8
]}

Potosnak, M. ^{[9
]}

Fu, T. -M. ^{[10
]}

Goldstein, A. ^{[11
]}

Bai, J. ^{[12
]}

Schurgers, G. ^{[4
]}

机构：

[1] Met Off Hadley Ctr, Exeter EX1 3PB, Devon, England

[2] Univ Bristol, Sch Geog Sci, Bristol BS8 1SS, Avon, England

[3] Macquarie Univ, Sch Biol Sci, N Ryde, NSW 2109, Australia

[4] Lund Univ, Dept Earth & Ecosyst Sci, S-22362 Lund, Sweden

[5] Karlsruhe Inst Technol, Inst Meteorol & Climate Res KIT IMK IFU, D-82467 Garmisch Partenkirchen, Germany

[6] Univ Leeds, Sch Geog, Leeds LS2 9JT, W Yorkshire, England

[7] Univ Edinburgh, Sch Geosci, Edinburgh EH9 3JW, Midlothian, Scotland

[8] Univ Toulouse, Lab Aerol, F-31400 Toulouse, France

[9] De Paul Univ, Environm Sci Program, Chicago, IL 60614 USA

[10] Peking Univ, Dept Atmospher & Ocean Sci, Sch Phys, Beijing 100871, Peoples R China

[11] Univ Calif Berkeley, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA

[12] Chinese Acad Sci, LAGEO, Inst Atmospher Phys, Beijing 100029, Peoples R China

来源：

ATMOSPHERIC CHEMISTRY AND PHYSICS | 2011年 / 11卷 / 09期

基金：

英国自然环境研究理事会;

关键词：

TERRESTRIAL ECOSYSTEMS; STOMATAL CONDUCTANCE; FLUX MEASUREMENTS; RATE VARIABILITY; LONG-TERM; MODEL; LEAVES; CARBON; REPRESENTATION; VEGETATION;

D O I：

10.5194/acp-11-4371-2011

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

We have incorporated a semi-mechanistic isoprene emission module into the JULES land-surface scheme, as a first step towards a modelling tool that can be applied for studies of vegetation - atmospheric chemistry interactions, including chemistry-climate feedbacks. Here, we evaluate the coupled model against local above-canopy isoprene emission flux measurements from six flux tower sites as well as satellite-derived estimates of isoprene emission over tropical South America and east and south Asia. The model simulates diurnal variability well: correlation coefficients are significant (at the 95% level) for all flux tower sites. The model reproduces day-to-day variability with significant correlations (at the 95% confidence level) at four of the six flux tower sites. At the UMBS site, a complete set of seasonal observations is available for two years (2000 and 2002). The model reproduces the seasonal pattern of emission during 2002, but does less well in the year 2000. The model overestimates observed emissions at all sites, which is partially because it does not include isoprene loss through the canopy. Comparison with the satellite-derived isoprene-emission estimates suggests that the model simulates the main spatial patterns, seasonal and inter-annual variability over tropical regions. The model yields a global annual isoprene emission of 535 +/- 9 TgC yr(-1) during the 1990s, 78% of which from forested areas.

引用

页码：4371 / 4389

页数：19