Results 21 to 30 of about 2,440,582 (249)

Measurement of Atmospheric CO₂ Column Concentrations Based on Open-Path TDLAS

Sensors, 2021
Monitoring of CO2 column concentrations is valuable for atmospheric research. A mobile open-path system was developed based on tunable diode laser absorption spectroscopy (TDLAS) to measure atmospheric CO2 column concentrations.
Fengxin Xin, Jie Li, Jinjia Guo, Dewang Yang, Yong Wang, Qiuhua Tang, Zhishen Liu   +6 more
doaj   +1 more source

Tropospheric Vertical Profiles of Aerosol Optical, Microphysical and Concentration Properties in the Frame of the Hygra-CD Campaign (Athens, Greece 2014): A Case Study of Long-Range Transport of Mixed Aerosols

EPJ Web of Conferences, 2016
Combined multi-wavelength aerosol Raman lidar and sun photometry measurements were performed during the HYGRA-CD campaign over Athens, Greece during May-June 2014.
Papayannis Alexandros, Argyrouli Athina, Müller Detlef, Tsaknakis Georgios, Kokkalis Panayotis, Binietoglou Ioannis, Kazadzis Stelios, Solomos Stavros, Amiridis Vassilis   +8 more
doaj   +1 more source

Combining optical satellite data and airborne laser scanner data for vegetation classification [PDF]

, 2011
The aim of this study was to investigate to which degree the accuracy of vegetation classification could be improved by combining optical satellite data and airborne laser scanner (ALS) data, compared with using satellite data only.
Nordkvist, Karin,, Sveriges lantbruksuniversitet., Olsson, Håkan,, Holmgren, Johan,, Håkan Olsson, Granholm, Ann-Helen, Karin Nordkvist, Nordkvist, Karin, Johan Holmgren, Ann-Helen Granholm, Holmgren, Johan, Nilsson, Mats,, Nilsson, Mats, Olsson, Håkan, Granholm, Ann-Helen,, Mats Nilsson   +15 more
core   +1 more source

Aerosol Typing Based on Multiwavelength Lidar Observations and Meteorological Model Data [PDF]

EPJ Web of Conferences, 2020
Three different aerosol classification methods have been used to characterize lidar observations: Mahalanobis distance automatic aerosol type classification, Neural Network Aerosol Typing Algorithm (NATALI) and Source and Analysis (SCAN) aerosol ...
Mylonaki Maria, Giannakaki Elina, Papayannis Alexandros, Floca Elena, Komppula Mika   +4 more
doaj   +1 more source

Evaluation of remote sensing techniques for estimation of forest variables at stand level [PDF]

, 2006
There is a continuous need for accurate forest description. Forest data at stand level is required in forestry planning, in particular when scheduling treatments within the next few years.
Magnusson, Mattias
core   +1 more source

Intense dust transport event over Athens, Greece during the BIOSPHERE campaign Summer 2023: Aerosol profiling in relation to the near-ground UVB levels [PDF]

EPJ Web of Conferences
We present an intense dust transport event occurred over Athens, Greece during the BIOSPHERE campaign in summer 2023. Three multi-wavelength lidar systems have been used to provide the vertical profiles of the aerosol optical properties, and relevant ...
Papayannis Alexandros, Gidarakou Marilena, Kralli Eleni, Mylonaki Maria, Kokkalis Panagiotis, Tsaknakis Georgios, Eleftheratos Kostas   +6 more
doaj   +1 more source

Soil aggregate structure, stability, and stoichiometric characteristics in a smelter-impacted soil under phytoremediation

Frontiers in Environmental Science, 2022
Smelter-impacted soils often result in soil degradation and the destruction of the soil structure. Although soil aggregate typically plays a crucial role in soil structure, the influence of phytoremediation on soil aggregate structure stability and ...
Lei Xu, Lei Xu, Xiangyu Xing, Jingfeng Bai, Ding Li   +4 more
doaj   +1 more source

Preliminary Detection of Geothermal Manifestation Potential Using Microwave Satellite Remote Sensing [PDF]

, 2018
The satellite technology has developed significantly. The sensors of remote sensing satellites are in the form of optical, Microwave, and LIDAR. These sensors can be used for energy and mineral resources applications.
Nugroho, Udhi Catur, Udhi Catur Nugroho, Julzarika, Atriyon, Atriyon Julzarika   +3 more
core   +1 more source

Exploitation of Multi-Band Lidar for the Classification of Free-Flying Migratory Birds: A Pilot Study Over Athens, Greece

EPJ Web of Conferences, 2016
A multi-wavelength lidar system was used to detect free-flying birds passing over Athens, Greece. The location is strategically located in one of the important migratory corridors for birds migrating between Europe and Africa.
Jansson Samuel, Papayannis Alexandros, Åkesson Susanne, Tsaknakis Georgios, Brydegaard Mikkel   +4 more
doaj   +1 more source

Canadian Biomass Burning Aerosol Properties Modification during a Long-Ranged Event on August 2018

Sensors, 2020
The aim of this paper is to study the spatio-temporal evolution of a long-lasting Canadian biomass burning event that affected Europe in August 2018. The event produced biomass burning aerosol layers which were observed during their transport from Canada
Christina-Anna Papanikolaou, Elina Giannakaki, Alexandros Papayannis, Maria Mylonaki, Ourania Soupiona   +4 more
doaj   +1 more source