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153篇 您的检索式:作者名="Harrison H C"
    题名 作者 年代 出处 被引量
1Comparison of two remote sensing models for estimating evapotranspiration: algorithm evaluation and application in seasonally arid ecosystems in South Africa显示文摘Remote sensing tools are becoming increasingly important for providing spatial information on water use by different ecosystems. Despite significant advances in remote sensing based evapotranspiration(ET) models in recent years, important information gaps still exist on the accuracy of the models particularly in arid and semi-arid environments. In this study, we evaluated the Penman-Monteith based MOD16 and the modified Priestley-Taylor(PT-JPL) models at the daily time step against three measured ET datasets. We used data from two summer and one winter rainfall sites in South Africa. One site was dominated by native broad leaf and the other by fine leafed deciduous savanna tree species and C4 grasses. The third site was in the winter rainfall Cape region and had shrubby fynbos vegetation. Actual ET was measured using open-path eddy covariance systems at the summer rainfall sites while a surface energy balance system utilizing the large aperture boundary layer scintillometer was used in the Cape. Model performance varied between sites and between years with the worst estimates(R2<0.50 and RMSE>0.80 mm/d) observed during years with prolonged mid-summer dry spells in the summer rainfall areas. Sensitivity tests on MOD16 showed that the leaf area index, surface conductance and radiation budget parameters had the largest effect on simulated ET. MOD16 ET predictions were improved by:(1) reformulating the emissivity expressions in the net radiation equation;(2) incorporating representative surface conductance values;and(3) including a soil moisture stress function in the transpiration sub-model. Implementing these changes increased the accuracy of MOD16 daily ET predictions at all sites. However, similar adjustments to the PT-JPL model yielded minimal improvements. We conclude that the MOD16 ET model has the potential to accurately predict water use in arid environments provided soil water stress and accurate biome-specific parameters are incorporated.Sebinasi DZIKITI Nebo Z JOVANOVIC Richard DH BUGAN Abel RAMOELO Nobuhle P MAJOZI Alecia NICKLESS Moses A CHO David C LE MAITRE Zanele NTSHIDI Harrison H PIENAAR 2019Journal of Arid Land2019,11,4:4
2Evaluation of polymers for controlledrelease properties when incorporated with nitrogen fertilizer solutions显示文摘Smith J D Harrison H C 0,,5:1
3Prevalence, isolation, and partial sequence analysis of hepatitis E virus from domestic animals in China 显示文摘Wang Y C Zhang H Y Xia N S Peng G Lan H Y Zhuang H Zhu Y H Li S W Tian K G Gu W J Lin W J Wu J X Li X Harrison T J 2002Journal of Medical Virology2002,67,4:1
4Cytogenetics of multiple myeloma:interpretation of fluorescene in situ hybridization results显示文摘HARRISON C J MAZZULLO H CHEUNG K L 2003Br J Haematol2003,120,:1
5Tolerability of high-dose venlafaxine in depressed patients显示文摘HARRISON C L FERRIER N YOUNG A H 2004J Psychopharmacol2004,18,:1
6ldentification of pancreatic beta cell-related genes by representational difference analysis显示文摘Niwa H Harrison L C DeAizpurua H J 1997Endocrinology1997,138,4:1
7High incidence of defective high-shear platelet function among platelet donors显示文摘Harrison P Segal H Furtado C 2004Transfusion2004,44,7:1
8Transport,manipulation, and reaction of biological cells on-chip using electrokinetic effects 显示文摘LI P C H HARRISON D J 1997Anal Chem1997,69,8:1
9Block copolymer lithography:Periodic arrays of -10 to the 11th power holes in 1 square centimeter显示文摘PARK M HARRISON C CHAIKIN P M REGISTER R A ADAMSON D H 1997Science1997,276,5317:1
10Herpes zoster burden of illness and health care resource utilization in the Australian population aged 50years and older显示文摘Stein AN Britt H Harrison C 2009Vaccine2009,27,:1
11Limiting postpartum weight retention through early antenatal intervention : the HeLP-her randomised controlled trial 显示文摘Harrison C L Lombard C B Teede H J 2014Int J Behav Nutr Phys Act2014,11,:1
12Instrumenting the planet显示文摘Chen-ritzo C H Harrison C Paraszczak J 2009IBM Journal of Research & Development2009,53,3:1
13Evaluation of polymers for controlled release properties when incorporated with nitrogen fertilizer solutions显示文摘Smith J D Harrison H C 1991Comm Soil Sci Plant Anal1991,22,56:1
14Impact of diagnostic cytogenetics on outcome in AML analysis of 1 613 patients entered into the UK MRC AML 10 trial显示文摘Grimwde D Walker H Harrison C 1996Blood1996,88,:1
15Expression analysis of human HL60 cells exposed to 60 Hz square- or sinewave magnetic fields 显示文摘BALCER-KUBICZEK E K HARRISON G H DAVIS C C 2000Radiat Res2000,153,52:1
16Impact of immunological platelet counting (by the Platelet Ratio ) on haematological practice显示文摘Harrison P Segal H Briggs C 2005Clinical Cytometry2005,67,1:1
17Formulas for ambient noise level and coherence显示文摘HARRISON C H 1996J Acoust Soc Am1996,99,4:1
18Aqueous phase oxidation of sulfites by ozone in the presence of iron and manganese显示文摘HARRISON H LARSON T V MONKMAN C S 1982Atmospheric Environment1982,16,5:1
192009, Organic and metal contamination in surface mangrove sediments of South China显示文摘VANE C H HARRISON I KIM A W 2009Marine Pollution Bulletin2009,58,1:1
20Subcutaneous endoscopieally assisted ligation(SEAL) of the internal ring for repair of inguinal hernias in children:a novel technique显示文摘Harrison M B Lee H Albanese C T 2005J Pediatr Surg2005,40,7:1
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