A soil-vegetation-atmosphere transfer scheme for the modeling of water and energy balance processes in high latitudes 2. Application and validation

被引:32
作者
Pauwels, VRN [1 ]
Wood, EF [1 ]
机构
[1] Princeton Univ, Dept Civil Engn & Operat Res, Water Resources Program, Princeton, NJ 08544 USA
关键词
D O I
10.1029/1999JD900004
中图分类号
P4 [大气科学(气象学)];
学科分类号
0706 ; 070601 ;
摘要
In support of the overall scientific objective of the Boreal Ecosystem-Atmosphere Study (BOREAS), which encompasses the improved understanding of the interactions between the boreal forest and the atmosphere, a process-based water and energy balance model is applied to observed forcing data, and the results are presented and discussed. Observed tower forcing and validation data are analyzed. A consistent diurnal pattern in the energy balance closure of the validation data is obtained. Simulations are performed for a number of BOREAS flux tower sites. The model successfully simulates the temporally averaged Bowen ratio and the evaporative part of precipitation over the different BOREAS flux tower sites during the 1994 and 1996 intensive field campaigns. At finer temporal scales a small phase shift in sensible heat flux and net radiation exists between the observed and model-derived quantities. The ground heat flux is found to be slightly larger than the observations during the course of the day. It is suggested that the sensitivity of the model to parameters such as the moss thickness, thermal conductivity, and heat capacity is responsible for these differences. The moss moisture content and the different components of the energy balance were very well matched for a continuous simulation during 1996. Overall, the accuracy performance of the model is equivalent to the accuracy of the input forcing data.
引用
收藏
页码:27823 / 27839
页数:17
相关论文
共 16 条
[1]  
[Anonymous], 1992, HDB HYDROLOGY
[2]  
Beven K.J., 1979, HYDROL SCI B, V24, P43, DOI [DOI 10.1080/02626667909491834, 10.1080/02626667909491834]
[3]  
COUGHLAN JC, 1994, BOREAS MODEL INTERCO
[4]  
DESILANS P, 1986, THESIS NATL POLYTECH
[5]  
Donatelli M., 1995, SISTEMINELLAGESTIONE
[6]   MULTISCALE MODELING OF SPATIALLY-VARIABLE WATER AND ENERGY-BALANCE PROCESSES [J].
FAMIGLIETTI, JS ;
WOOD, EF .
WATER RESOURCES RESEARCH, 1994, 30 (11) :3061-3078
[7]   REMOTE-SENSING OF FOREST BIOPHYSICAL STRUCTURE USING MIXTURE DECOMPOSITION AND GEOMETRIC REFLECTANCE MODELS [J].
HALL, FG ;
SHIMABUKURO, YE ;
HUEMMRICH, KF .
ECOLOGICAL APPLICATIONS, 1995, 5 (04) :993-1013
[8]  
HALLIWELL DH, 1997, BOREAL ECOSYSTEM ATM
[9]   Intercalibration, objective analysis, intercomparison and synthesis of BOREAS surface net radiation measurements [J].
Hodges, GB ;
Smith, EA .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 1997, 102 (D24) :28885-28900
[10]  
LOVELAND TR, 1991, PHOTOGRAMM ENG REM S, V57, P1453