نتایج جستجو برای: land surface model

تعداد نتایج: 2715685  

2001
Yubao Liu Fei Chen Tom Warner Scott Swerdlin

* Corresponding author address: Yubao Liu, National Center for Atmospheric Research, P. O. Box 3000, Boulder, CO 80307-3000. Phone: (303) 497-8211 Email: [email protected]

Journal: :Remote Sensing 2016
Emily Black Elena Tarnavsky Ross Maidment Helen Greatrex Agrotosh Mookerjee Tristan Quaife Matthew Brown

Remotely sensed rainfall is increasingly being used to manage climate-related risk in gauge sparse regions. Applications based on such data must make maximal use of the skill of the methodology in order to avoid doing harm by providing misleading information. This is especially challenging in regions, such as Africa, which lack gauge data for validation. In this study, we show how calibrated en...

2017
R. Garcia Gonzalez A. Verhoef P. Luigi Vidale I. Braud Raquel Garcia Gonzalez Anne Verhoef Pier Luigi Vidale Isabelle Braud

2016
Xingjie Lu Ying-Ping Wang Ian J. Wright Peter B. Reich Zheng Shi Yongjiu Dai

CSIRO Ocean and Atmosphere Flagship, Private Bag 1, Vic. 3195, Australia, Department of Biological Sciences, Macquarie University, NSW 2109, Australia, Department of Forest Resources, University of Minnesota, St Paul, MN 55108, USA, Hawkesbury Institute for the Environment, University of Western Sydney, Penrith, NSW 2751, Australia, Department of Microbiology and Plant Biology, University of Ok...

Journal: :Remote Sensing 2018
Ally M. Toure R. H. Reichle Barton A. Forman Augusto Getirana Gabrielle J. M. De Lannoy

The NASA Catchment land surface model (CLSM) is the land model component used for the Modern-Era Retrospective Analysis for Research and Applications (MERRA). Here, the CLSM versions of MERRA and MERRA-Land are evaluated using snow cover fraction (SCF) observations from the Moderate Resolution Imaging Spectroradiometer (MODIS). Moreover, a computationally-efficient empirical scheme is designed ...

Journal: :اکو هیدرولوژی 0
مجید محمدی استادیار گروه مرتع و آبخیزداری، دانشکدۀ منابع طبیعی، دانشگاه سمنان، سمنان، ایران حسین زینی وند استادیار گروه مهندسی مرتع و آبخیزداری، دانشکدۀ کشاورزی، دانشگاه لرستان حمیدرضا مرادی دانشیار گروه مهندسی آبخیزداری، دانشکدۀ منابع طبیعی و علوم دریایی دانشگاه تربیت مدرس، مازندران، نور حمیدرضا پورقاسمی استادیار گروه مهندسی منابع طبیعی و محیط زیست، دانشکدۀ کشاورزی، دانشگاه شیراز، شیراز، ایران حسن فرازجو مدیر دفتر مطالعات پایۀ شرکت آب منطقه‏ای گلستان

the main objective of this research was assessing the effects of land use on runoff parameters such as total runoff, surface runoff and peak discharges at the baghsalian watershed as a case study site. at first, land use maps of 1986 and 2012 were prepared using a synthetic method and landsat images. wetspa model was applied to simulate daily runoff for 8 years (the first 5 years as calibration...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه 1377

the methods which are used to analyze microstrip antennas, are divited into three categories: empirical methods, semi-empirical methods and full-wave analysis. empirical and semi-empirical methods are generally based on some fundamental simplifying assumptions about quality of surface current distribution and substrate thickness. thses simplificatioms cause low accuracy in field evaluation. ful...

Journal: :Journal of Applied Meteorology 1997

Journal: :international journal of industrial engineering and productional research- 0
hossein shams shemirani golpayegan university of technology faride bahrami golpayegan university of technology mohammad modarres sharif university of technology

in this paper we develop a new approach for land leveling in order to improve the topology of a large area for irrigation or civil projects. the objective in proposed model is to minimize the total volume of cutting so that technical requirements of land leveling such as suitable slope and standard ratio of cutting to filling and maximum penstock point’s height are considered. we develop a warp...

Predicting the impact of land cover and climate change on hydrologic responses using modeling tools are essential in understanding the movement and pattern of hydrologic processes within the watershed. The paper provided potential implications of land conversions and climate change scenarios on the hydrologic processes of Muleta watershed using soil and water assessment tool model. Model inputs...

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