نتایج جستجو برای: aqua crop model

تعداد نتایج: 2166057  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم کشاورزی و منابع طبیعی گرگان - دانشکده کشاورزی 1391

با توجه به محدودیت های منابع آب و رشد سریع تقاضای آب و توزیع غیر یکنواخت خصوصیات زمانی و مکانی بارندگی در کشور، مدیریت آبیاری تبدیل به یکی از موضوعات مهم شده است. در این تحقیق، هدف تعیین برنامه ریزی و زمانبندی آبیاری بر اساس نیاز واقعی آب می باشد. برای این منظور، مطالعه موردی در منطقه دشت دردوزن انجام شده است. نقشه تبخیر- تعرق منطقه در یکی از نرم افزارهای جانبی arcgis به نام arcet با استفاده از...

2004
Patrick Minnis David Young Sunny Sun-Mack Patrick W. Heck David R. Doelling Qing Z. Trepte

The microand macrophysical properties of clouds play a crucial role in Earth’s radiation budget. The NASA Clouds and Earth’s Radiant Energy System (CERES) is providing simultaneous measurements of the radiation and cloud fields on a global basis to improve the understanding and modeling of the interaction between clouds and radiation at the top of the atmosphere, at the surface, and within the ...

2010
Lili Wang Yuesi Wang Jinyuan Xin Zhanqing Li Xiaoyuan Wang

Article history: Received 15 July 2009 Received in revised form 8 February 2010 Accepted 9 April 2010 The latestMODIS aerosol optical depth (AOD) retrieval algorithm (C005) based on analyses of global AERONET data for both Terra and Aqua satellites has gradually supplanted the older algorithm (C004) since 2006. However, due to few AERONET sites in China, assessing applications of MODIS products...

2009
Sasmita Chaurasia Do Thanh Tung P. K. Thapliyal P. C. Joshi

Present study is an attempt to examine the suitability of soil moisture products available from Aqua-AMSR-E for their application in monsoon simulations at different temporal scales ranging from medium range to climate scales. For this purpose we have analysed the AMSR-E soil moisture products over 18 locations in India to evaluate their suitability for assimilation in numerical models. It has ...

Journal: :علوم گیاهان زراعی ایران 0
علیجان بافکار دانشجوی دکتری گروه مهندسی آب دانشگاه شهید چمران اهواز سعید برومند نسب استاد گروه مهندسی آب دانشگاه شهید چمران اهواز مجید بهزاد استاد گروه مهندسی آب دانشگاه شهید چمران اهواز بهمن فرهادی بانسوله استادیار گروه مهندسی آب دانشگاه رازی، کرمانشاه

wofost is a crop growth simulation model which can simulate crop growth and yield components of annual crops dynamically in the various stages of growth period. some parts of the model outputs (crop yield and crop water requirements) can be used in irrigation planning and management of water resources. in this study, a field research was carried out in a randomized complete block design with th...

2004
C. J. Huang Y. K. Su S. L. Wu

In this study, the effect of solvents, HCl and aqua regia at room temperature, on the etching behavior of ITO film was investigated. A higher etching rate was obtained in aqua regia than in HCl. However, via XPS analysis, it was found that there was more surface residual byproduct in aqua regia etchant than in HCl. The surface concentration (ratio of chlorine to indium) was 7.2 and 0.38 in aqua...

2006
W. Yang N. V. Shabanov D. Huang W. Wang Y. Knyazikhin

A prototype product suite, containing the Terra 8-day, Aqua 8-day, Terra–Aqua combined 8and 4-day products, was generated as part of testing for the next version (Collection 5) of the MODerate resolution Imaging Spectroradiometer (MODIS) leaf area index (LAI) products. These products were analyzed for consistency between Terra and Aqua retrievals over the following data subsets in North America...

Journal: :International Journal of Nanomedicine 2006
Venu Perla Thomas J Webster

The objective of the present in vitro study was to estimate the adhesion strength of nanometer crystalline hydroxyapatite (HA)-small intestine sub-mucosa (SIS) composites on model implant surfaces. Techniques of thermal denaturation (60 degrees C, 20 min) of SIS were used to enhance the adhesion strength of entheses materials to underlying implants. Specifically, results indicated that the adhe...

Journal: :پژوهش های تولید گیاهی 0
علیرضا نه بندانی دانشجو/دانشگاه علوم کشاورزی و منابع طبیعی گرگان افشین سلطانی استاد دانشگاه علوم کشاورزی و منابع طبیعی گرگان ابراهیم زینلی استاد دانشگاه علوم کشاورزی و منابع طبیعی گرگان سامیه رئیسی عضو هیئت علمی مرکز تحقیقات گرگان روح الله نجفی دانشجوی دانشگاه علوم کشاورزی و منابع طبیعی گرگان

crop simulation models are mathematical representations of plant growth processes as influenced by interactions among genotype, environment and crop management. using crop simulation models can be an efficient complement to experimental research. models are being used to understand the response of crops to possible changes in crop, cultural management and environmental variables.while there are...

Journal: :Remote Sensing 2016
Xiaohui Lin Wen Zhang Yao Huang Wenjuan Sun Pengfei Han Lingfei Yu Feifei Sun

Spatially and temporally resolved observations of near-surface air temperatures (Ta, 1.5–2 m above ground) are essential for understanding hydrothermal circulation at the land–atmosphere interface. However, the uneven spatial distribution of meteorological stations may not effectively capture the true nature of the overall climate pattern. Several studies have attempted to retrieve spatially co...

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