نتایج جستجو برای: land surface model

تعداد نتایج: 2715685  

Journal: :Global and Planetary Change 1998

Surface waters are the most important economic resource for humans which provide water for agricultural, industrial and anthropogenic activities. Surface water quality plays vital role in protecting aquatic ecosystems. Unplanned urbanization, intense agricultural activities and deforestation are positively associated with carbon, nitrogen and phosphorous related water quality parameters. Multip...

Rashtbari, Maryam, Taleai, Mohammad,

Access to current and future water resources is one of the concerned problems for managers and policymakers around the world. Because of the communication between water resources and land use, these two topics had come together in different researches. Scenarios designed in regional land planning provide the basis for analyzing the existing opportunities and making the right decisions for manag...

1985
M. Haggag T. Yamashita

Papers published in Hydrology and Earth System Sciences Discussions are under open-access review for the journal Hydrology and Earth System Sciences Abstract A multi-layer land surface model (SOLVEG) is dynamically coupled to the non-hydrostatic atmospheric model (MM5) in order to represent better spatial variations and changes in land surface characteristics compared with the land surface para...

2004
Peter J. Lawrence

Tian et al., (2004a), Oleson et al., (2003), and Tian et al., (2004b) recently identified significant differences between the current land surface parameters of the Community Land Model (CLM) used with the Community Climate System Model (CCSM), and global land surface descriptions from Moderate Resolution Imaging Spectroradiometer (MODIS) satellite mapping. Specifically these investigations ide...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1382

‏‎the main purpose of this research was to:1.develop a coking model for thermal cracking of naphtha.2.study coke inhibition methods using different coke inhibitors.developing a coking model in naphtha cracking reactors requires a suitable model of the thermal cracking reactor based on a reliable kinetic model.to obtain reliable results all these models shall be solved simultaneously.for this pu...

1998
Ferenc Acs Michael Hantel

Ž . The land-surface flux model PROGSURF designed jointly at the Universities of Vienna and Budapest is reviewed; it belongs to the broad spectrum of PILPS 1 models. PROGSURF comprises one vegetation layer and three soil layers. Temperature prediction is made by the heat conduction equation in conjunction with the force-restore method. Turbulent heat fluxes are parameterized by gradient laws us...

Journal: :اکو هیدرولوژی 0
مهدی وفاخواه دانشکده منابع طبیعی دانشگاه تربیت مدرس محمدرضا جوادی استادیار دانشگاه آزاد اسلامی واحد نور جوانشیر نجفی مجد دانشجوی کارشناسی ارشد آبخیزداری دانشگاه آزاد اسلامی واحد نور

due to the importance of the role of land use changes on runoff changes, several studies have taken place to develop models with simulating land use changes. in this study, the l-thia model was used for estimating the runoff made by land use changes in chalousrud watershed. results of runoff modeling using l-thia model showed that runoff depth increased from 422.98mm to 809.168mm during 1984 to...

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