نتایج جستجو برای: integrated water

تعداد نتایج: 810787  

Journal: :Atmospheric Measurement Techniques 2021

Abstract. Microwave radiometers are widely used for the retrieval of liquid water path (LWP) and integrated vapor (IWV) in context cloud precipitation studies. This paper presents a new site-independent algorithm LWP IWV, relying on single-frequency 89 GHz ground-based radiometer. A statistical approach is based neural network, which trained tested synthetic dataset constructed from radiosonde ...

2005
S. C. Reising F. Iturbide-Sanchez

Knowledge of the temporal and spatial distribution of water vapor and liquid water in the troposphere is fundamental for shortand medium-range prediction of precipitation and severe weather. Current measurements of these quantities in the troposphere are limited by optical extinction in clouds (lidar), in temporal resolution (radiosondes), in spatial resolution (GPS networks) and in spatial cov...

2003
Haixia Liu Ming Xue

*It is very important to accurately characterize the three-dimensional distribution of water vapor in the atmosphere for the understanding and prediction of mesoscale and storm-scale weather, especially with regard to quantitative precipitation forecasting (Emanuel et al. 1995). Skills in these predictions have been improved rather slowly owing to the high spatial and temporal variability of wa...

2004
J. Rockström F. Penning de Vries

The challenge of producing food for a rapidly increasing population in semi-arid agro-ecosystems in Southern Africa is daunting. More food necessarily means more consumptive use of so-called green water flow (vapour flow sustaining crop growth). Every increase in food production upstream in a watershed will impact on water user and using systems downstream. Intensifying agriculture has in the p...

ژورنال: علوم آب و خاک 2011
رسول مهدوی نجف‌آبادی, , سیدحسن طباطبائی, , عاطفه مهدوی, , محمدرضا نوری امام‌زاده‌یی, ,

In recent years, surface water resources in Chaharmahal and Bakhtiari province have decreased and groundwater level has fallen down. Thus, groundwater must be strengthened by surface water resources. The objective of this search was identification of artificial recharge sites thorough Fuzzy Logic in Shahrekord Basin. Effective factors in ground water recharge such as slope, infiltration rate, t...

Journal: :به زراعی کشاورزی 0
جلال جلیلیان استادیار گروه زراعت، دانشکدة کشاورزی، دانشگاه ارومیه، ارومیه، ایران عظیمه خاده دانشجوی کارشناسی ارشد زراعت، دانشکدة کشاورزی، دانشگاه ارومیه، ارومیه، ایران علیرضا پیرزاد دانشیار گروه زراعت، دانشکدة کشاورزی، دانشگاه ارومیه، ارومیه، ایران

to study effect of fe and zn spraying on some characteristics of mungbean, an experiment was designed as factorial based on randomized complete block with three replications in urmia university, 2012. treatments were nutrition systems (organic, chemical, integrated and no nutrition) and micronutrients (fe, zinc, no foliar application and water spraying). the plant height, pod length, number of ...

Journal: :به زراعی کشاورزی 0
سعیده ملکی فراهانی استادیار، گروه زراعت و اصلاح نباتات، دانشکده کشاورزی، دانشگاه شاهد، تهران ـ ایران داریوش مظاهری استاد، گروه زراعت و اصلاح نباتات، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج ـ ایران محمدرضا چائی چی استاد، گروه زراعت و اصلاح نباتات، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج ـ ایران

to evaluate the effects of fertilizing and deficit irrigation regimes on some chemical properties of soil and plant, an experiment was conducted during 2007 and 2008 growing seasons. experimental design was a split plot based on a randomized complete block design with four replications. the treatments consisted of three deficit irrigation regimes (main plots) and six soil fertilizing systems (s...

Water plays a vital role in the development of activities in an area. The surface water resources are inadequate to fulfill the water demand. Productivity through groundwater is quite high as compared to surface water, but groundwater resources have not yet been properly exploited. Keeping this view, the present study attempts to select and delineate various groundwater potential zones for the ...

2016
Yuan Chang Guijun Li Yuan Yao Lixiao Zhang Chang Yu

Water, energy, and food are lifelines for modern societies. The continuously rising world population, growing desires for higher living standards, and inextricable links among the three sectors make the water-energy-food (WEF) nexus a vibrant research pursuit. For the integrated delivery of WEF systems, quantifying WEF connections helps understand synergies and trade-offs across the water, ener...

Journal: :Environmental Modelling and Software 2002
P. Perez N. Ardlie P. Kuneepong C. Dietrich Wendy S. Merritt

As part of an Integrated Water Resource Assessment and Management project (IWRAM) in Northern Thailand, a Decision Support System is being constructed in order to provide guidelines for crop diversification and water allocation. The IWRAM software integrates a crop model with hydrological and economic models. Presented here is the integrated crop model, called CATCHCROP, which is capable of sim...

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