Analysis of the surface energy budget at a site of GAME/Tibet using a single-source model

被引:41
|
作者
Yang, K [1 ]
Koike, T [1 ]
Ishikawa, H [1 ]
Ma, YM [1 ]
机构
[1] Univ Tokyo, Dept Civil Engn, River Lab, Bunkyo Ku, Tokyo 1138656, Japan
关键词
D O I
10.2151/jmsj.82.131
中图分类号
P4 [大气科学(气象学)];
学科分类号
0706 ; 070601 ;
摘要
In the GAME/Tibet project, the Anduo site is a typical plateau prairie area that is covered by short and sparse vegetation. From May to September 1998, we measured all the surface energy fluxes at this site to quantitatively describe the surface energy budget, but it was still questionable because of low energy closure ratios in most days of the rainy season. To clarify the surface energy budget at this site, this study proposes a single-source energy partition model, to simplify the processes of heat and water vapor transfer from the surface. The model does not distinguish the contribution of turbulent fluxes from the vegetation, and the one from the ground, and thus has fewer parameters to be calibrated comparing to a dual-source model. The main model parameters are: the soil surface evaporation resistance, the parameter kB(-1) (the logarithm of the ratio of the aerodynamic roughness length to the thermal roughness length), and the surface emissivity. Their values are calibrated by minimizing the discrepancy between measured and model-predicted values of soil temperatures. This tuned single-source model is then validated by the agreement between the measured and simulated net radiation flux, surface soil heat flux, sensible heat flux, and latent heat flux on the days with high energy closure ratios. This model also reproduces these measured fluxes, except latent heat flux on the days with low closure ratios. The simulated latent heat flux is much higher than the measured one. We further show that the measured latent heat flux is untrustable due to an instrumental limitation, while the model provides a reasonable surrogate. Therefore, the single-source concept is applicable to the heat and water vapor transfer on the Tibetan plateau sparse-vegetation surface, and would contribute to a further research on the land-atmosphere interactions over the plateau.
引用
收藏
页码:131 / 153
页数:23
相关论文
共 50 条
  • [41] Growth of lead chalcogenide thin films using single-source precursors
    Afzaal, M
    Ellwood, K
    Pickett, NL
    O'Brien, P
    Raftery, J
    Waters, J
    JOURNAL OF MATERIALS CHEMISTRY, 2004, 14 (08) : 1310 - 1315
  • [42] CHEMICAL BEAM EPITAXY OF GAAS FILMS USING SINGLE-SOURCE PRECURSORS
    EKERDT, JG
    SUN, YM
    JACKSON, MS
    LAKHOTIA, V
    PACHECO, KA
    KOSCHMIEDER, SU
    COWLEY, AH
    JONES, RA
    JOURNAL OF CRYSTAL GROWTH, 1992, 124 (1-4) : 158 - 164
  • [43] Synthesis of CdS and ZnS nanowires using single-source molecular precursors
    Barrelet, CJ
    Wu, Y
    Bell, DC
    Lieber, CM
    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (38) : 11498 - 11499
  • [44] Silver Itaconate as Single-Source Precursor of Nanocomposites for the Analysis of Chloride Ions
    Kolesnikova, Tatiana S.
    Zarubina, Anastasiya O.
    Gorbunova, Marina O.
    Zhinzhilo, Vladimir A.
    Dzhardimalieva, Gulzhian I.
    Uflyand, Igor E.
    MATERIALS, 2022, 15 (23)
  • [45] Modeling heterogeneous effective advertising stock using single-source data
    Nobuhiko Terui
    Masataka Ban
    Quantitative Marketing and Economics, 2008, 6 : 415 - 438
  • [46] Direct Writing of Cobalt Silicide Nanostructures Using Single-Source Precursors
    Jungwirth, Felix
    Porrati, Fabrizio
    Schuck, Alfons G.
    Huth, Michael
    Barth, Sven
    ACS APPLIED MATERIALS & INTERFACES, 2021, 13 (40) : 48252 - 48259
  • [47] GROWTH OF ZNO BY MOCVD USING ALKYLZINC ALKOXIDES AS SINGLE-SOURCE PRECURSORS
    AULD, J
    HOULTON, DJ
    JONES, AC
    RUSHWORTH, SA
    MALIK, MA
    OBRIEN, P
    CRITCHLOW, GW
    JOURNAL OF MATERIALS CHEMISTRY, 1994, 4 (08) : 1249 - 1253
  • [48] An Optimization Approach to Single-Source Localization using Direction and Range Estimates
    Reed, Jesse D.
    Buehrer, R. Michael
    da Silva, Claudio R. C. M.
    GLOBECOM 2009 - 2009 IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE, VOLS 1-8, 2009, : 3800 - 3804
  • [49] Single-Source Magnetic Nanorattles By Using Convenient Emulsion Polymerization Protocols
    Scheid, Daniel
    Cherkashinin, Gennady
    Ionescu, Emanuel
    Gallei, Markus
    LANGMUIR, 2014, 30 (05) : 1204 - 1209
  • [50] Preparation of the Noble Metals Nanoalloys Using Single-Source Precursors.
    Shubin, Yuri
    Korenev, Sergey
    Zadesenez, Andrey
    Plusnin, Pavel
    Filatov, Evgeny
    ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES, 2009, 65 : S339 - S339