نتایج جستجو برای: temperature and soil moisture parameters or recently

تعداد نتایج: 17161421  

2013
SWATI DEVABHAKTUNI

This paper aims in providing a user friendly, reliable and automated water pumping system. The paper aims in designing a system which is capable of detecting moisture level in the soil and capable of taking the decision of switching ON/OFF water pump. The system also uses temperature sensor to detect the temperature and automatically the fan speed can be controlled like coolants. In this paper ...

A.H. Halabian A.R. Dehghanpour, M. Fallahpour

Dust is a common atmospheric phenomenon in Iran especially in central arid regions.  This severely affects environment as well as resident’s health. Among the results of this phenomenon are Respiratory diseases, bash radiation, accelerated soil erosion, Desertification and degradation of ecosystems. Some dusts are originated from local desert conditions but adjacency to neighboring countries de...

A.H. Halabian A.R. Dehghanpour, M. Fallahpour

Dust is a common atmospheric phenomenon in Iran especially in central arid regions.  This severely affects environment as well as resident’s health. Among the results of this phenomenon are Respiratory diseases, bash radiation, accelerated soil erosion, Desertification and degradation of ecosystems. Some dusts are originated from local desert conditions but adjacency to neighboring countries de...

2009
N. Ye J. P. Walker R. Panciera D. Ryu C. Rüdiger

The Soil Moisture and Ocean Salinity (SMOS) mission, developed by the European Space Agency (ESA), will be launched in the second half of 2009. It will be the first L-band (~1.4 GHz) passive microwave satellite specifically designed for global soil moisture observations, with an expected accuracy for the retrieved soil moisture of ~0.04 m/m. While passive microwave observations have been widely...

2013
Ranmalee Bandara Jeffrey P. Walker Christoph Rüdiger

Soil moisture is among the key environmental variables controlling evaporation, infiltration and runoff. However, the temporal evolution of soil moisture is not easy to measure or monitor at large scales due to its spatial variability, which is largely driven by local variation in soil properties and vegetation cover. Consequently, soil moisture estimates using land surface models are typically...

2012
Christoph Rüdiger Jeffrey P. Walker Yann H. Kerr Arnaud Mialon Olivier Merlin Edward J. Kim

Extensive airborne field campaigns (Australian Airborne Cal/val Experiments for SMOS – AACES [1]) were undertaken during the 2010 summer and winter seasons of the southern hemisphere. The purpose of those campaigns was the validation of the Level 1c (brightness temperature) and Level 2 (soil moisture) products of the ESA-led Soil Moisture and Ocean Salinity (SMOS) mission [2]. As SMOS is the fi...

2012
J. Van doninck J. Peters H. Lievens B. De Baets E. C. Verhoest

A change detection algorithm is applied on a three year time series of ASAR Wide Swath images in VV polarization over Calabria, Italy, in order to derive information on temporal soil moisture dynamics. The algorithm, adapted from an algorithm originally developed for ERS scatterometer, was validated using a simple hydrological model incorporating meteorological and pedological data. Strong posi...

2016
Xiaoying Bao Xiaoxue Zhu Xiaofeng Chang Shiping Wang Burenbayin Xu Caiyun Luo Zhenhua Zhang Qi Wang Yichao Rui Xiaoying Cui

Understanding of effects of soil temperature and soil moisture on soil respiration (Rs) under future warming is critical to reduce uncertainty in predictions of feedbacks to atmospheric CO2 concentrations from grassland soil carbon. Intact cores with roots taken from a full factorial, 5-year alpine meadow warming and grazing experiment in the field were incubated at three different temperatures...

1985
A. Loew

Land surface models (LSM) are widely used as scientific and operational tools to simulate mass and energy fluxes within the soil vegetation atmosphere continuum for numerous applications in meteorology, hydrology or for geobiochemistry studies. A reliable parameterization of these models is important to improve the simulation skills. 5 Soil moisture is a key variable, linking the water and ener...

2001
Z. C. Alex J. Behari Elizabeth Rufus A. V. Karpagam

The potential of passive microwave radiometry for the soil moisture measurement is a well established one, especially in the long wave length regions due to its high penetrating capacity through vegetation. Radiometric data can be used as a mapping tool for classifying the crops, examining their health and viability and monitoring the farming practices. The radiometric data or the emission of m...

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