A5018812344- Radiation Detection and Scintillator Technologies
- Astronomical Observations and Instrumentation
- Atmospheric Ozone and Climate
- Graphite, nuclear technology, radiation studies
- Nuclear Physics and Applications
- Atmospheric and Environmental Gas Dynamics
- Radioactive contamination and transfer
- Advanced Computational Techniques and Applications
- Marine and environmental studies
- Crystallography and Radiation Phenomena
- Atmospheric chemistry and aerosols
- Geophysics and Sensor Technology
- Calibration and Measurement Techniques
- Radiation Dose and Imaging
- Geophysics and Gravity Measurements
- Atmospheric aerosols and clouds
- Ionosphere and magnetosphere dynamics
- Nuclear Issues and Defense
- Adaptive Control of Nonlinear Systems
- Astro and Planetary Science
- Robotic Path Planning Algorithms
- Earthquake Detection and Analysis
- Aeolian processes and effects
- Air Quality Monitoring and Forecasting
- Meteorological Phenomena and Simulations
Polytechnic School of Algiers
2017-2023
Office National de la Météorologie
2008-2021
Abstract. Small changes in the radiation budget at earth's surface can lead to large climatological responses when persistent over time. With increasing debate on anthropogenic influences climatic processes during 1980s need for accurate radiometric measurements with higher temporal resolution was identified, and it determined that existing measurement networks did not have or accuracy required meet this need. In 1988 WMO therefore proposed establishment of a new international Baseline...
Abstract. More than 2 years of columnar atmospheric aerosol measurements (2006–2009) at the Tamanrasset site (22.79° N, 5.53° E, 1377 m a.s.l.), in heart Sahara, are analysed. Aerosol Robotic Network (AERONET) level 2.0 data were used. The KCICLO (K is name a constant and ciclo means cycle Spanish) method was applied to part 1.5 series improve quality results. annual variability optical depth (AOD) Ångström exponent (AE) has been found be strongly linked convective boundary layer (CBL)...
We document the seasonal evolution of Saharan atmospheric boundary layer (SABL), in terms vertical structure, diurnal cycle, aerosol content, and cloud cover as well surface radiative budget, during 2006, using a mobile multiplatform observatory implemented Tamanrasset (Algeria). Ground‐based remote sensing (both active passive) situ instruments were deployed framework African Monsoon Multidisciplinary Analysis field experiment used synergy with satellite observations. Observations showed...
Abstract. The concentration of ozone at the Earth's surface is measured many locations across globe for purposes air quality monitoring and atmospheric chemistry research. We have brought together all publicly available observations from online databases modern era to build a consistent data set evaluation chemical transport chemistry-climate (Earth System) models projects such as Chemistry-Climate Model Initiative Aer-Chem-MIP. From total approximately 6600 sites 500 million hourly...
Abstract The Hoggar Massif is a comparatively populated region in the Sahara, where water supply critical problem due to lack of nearby sources and unaffordable pumping. In present paper, we analyse influence West African monsoon (WAM) on precipitation over during summer. We investigate (1) two rainfall events 23–27 July 2006, accounting for almost half this year, (2) representativity period with regard ERA‐40 ECMWF re‐analyses (1979 2001). By end consecutive northward bursts WAM flow...
Abstract. Small changes in the radiation budget at earth’s surface can lead to large climatological responses when persistent over time. With increasing debate on anthropogenic influences climatic processes during 1980s need for accurate radiometric measurements with higher temporal resolution was identified, and it determined that existing measurement networks did not have or accuracy required meet this need. In 1988 WMO therefore proposed establishment of a new international Baseline...
Abstract The Saharan heat low ( SHL ) is defined as a stationary thermal depression below 700 hPa located over the Sahara during boreal summer season. This feature has significant impact on seasonal and intra‐seasonal variability of rainfall Sahel. For various reasons, few observations are assimilated in operational numerical weather prediction models, especially surface sensitive observations. In this study we make use advanced microwave sounding unit AMSU ‐A) brightness temperatures...
Radiative transfer in the Earth’s atmosphere under clear-sky conditions strongly depends on turbidity due to aerosols and hydrometeors. It is therefore important know its temporal radiative properties for a given site when objective optimize solar energy that collected there. Turbidity can be studied via measurements models of global radiation reaching ground cloudless conditions. These generally depend two parameters, namely Angström coefficient Linke factor. This article aims do...
Abstract. More than two years of columnar atmospheric aerosol measurements (2006–2009) at Tamanrasset site, in the heart Sahara desert, are analysed. AERONET level 2.0 data were used. The KCICLO method was applied to a part 1.5 series improve quality results. annual variability optical depth (AOD) and Angstrom exponent (AE) has been found be strongly linked Convective Boundary Layer (CBL) thermodynamic features. dry-cool season (autumn winter time) is characterized by shallow CBL very low...
Abstract This paper is concerned with the design and control of a tilt-rotor UAV (TRUAV), purpose simplifying mechanical structure transition handling. Previous works on TRUAVs consider different controller for each flight mode. Furthermore, two sets actuators are used: propellers in VTOL mode, aerodynamic surfaces fixed-wing In this work, new that does not contain any proposed. A strategy also presented to accommodate particularity. Unlike previous works, uses single handle both phases,...
Abstract. The concentration of ozone at the Earth's surface is measured many locations across globe for purposes air quality monitoring and atmospheric chemistry research. We have brought together all publicly available observations from online databases modern era to build a consistent dataset evaluation chemical transport chemistry-climate (Earth System) models projects such as Chemistry-Climate Model Initiative Aer-Chem-MIP. From total approximately 6600 sites 500 million hourly...
Although significant progress has been achieved in multirotor UAV control, further improvement can be attained when accurate modelling is available. This paper presents a simple yet efficient approach for the identification of aerodynamic and inertial parameters UAV. The proposed solution tested on one most popular platforms among researchers - F450 quadrotor from DJI. technique obtained results would benefit not only working but also those simulation fault detection isolation problems....