Results 21 to 30 of about 4,267,101 (310)

Same but Different: A Framework to Design and Compare Riverbank Plastic Monitoring Strategies

open access: yesFrontiers in Water, 2020
Plastic pollution in rivers negatively impacts human livelihood and aquatic ecosystems. Monitoring data are crucial for a better understanding of sources, sinks and transport mechanisms of riverine macroplastics.
Paul Vriend   +2 more
doaj   +1 more source

Observations on the observer pattern [PDF]

open access: yesProceedings of the 17th Conference on Pattern Languages of Programs, 2010
A group of students who should have been familiar with basic design principles and MVC all failed to implement the Observer design pattern correctly while at the same time violating several design principles. This paper discusses what went wrong and why it probably went wrong.
openaire   +1 more source

Earth observation in service of the 2030 Agenda for Sustainable Development

open access: yesGeo-spatial Information Science, 2017
This paper reviews the key role that Earth Observations (EO) play in achieving the Sustainable Development Goals (SDGs) as articulated in the 2030 Agenda document and in monitoring, measuring, and reporting on progress towards the associated targets ...
Katherine Anderson   +4 more
doaj   +1 more source

Improvements in aerosol layer height retrievals from TROPOMI oxygen A-band measurements by surface albedo fitting in optimal estimation [PDF]

open access: yesAtmospheric Measurement Techniques
The aerosol layer height (ALH), from the Sentinel-5P/TROPOMI L2_AER_LH product, is based on an optimal estimation (OE) approach, fitting cloud-free measurements to synthetic reflectances in the strongest oxygen absorption band, provided by a neural ...
M. de Graaf   +6 more
doaj   +1 more source

Low Ionosphere under Influence of Strong Solar Radiation: Diagnostics and Modeling

open access: yesApplied Sciences, 2021
Solar flares (SFs) and intense radiation can generate additional ionization in the Earth’s atmosphere and affect its structure. These types of solar radiation and activity create sudden ionospheric disturbances (SIDs), affect electronic equipment on the ...
Vladimir A. Srećković   +3 more
doaj   +1 more source

Chemical observations of a polar vortex intrusion [PDF]

open access: yes, 2006
An intrusion of vortex edge air into the interior of the Arctic polar vortex was observed on the 31 January 2005 flight of the NASA DC-8 aircraft. This intrusion was identified as anomalously high values of ozone by Airborne Raman Ozone, Temperature, and
Lait, L. R.   +12 more
core   +1 more source

Overlap Correction Function For an Airborne Based Lidar

open access: yesEPJ Web of Conferences, 2016
The present research envisages the estimation of the overlap correction function for an airborne nadir-mounted lidar using multi-angle measurements. We have scanned a series of offnadir angles and after data processing we have been able to determine the ...
Adam Mariana, Marenco Franco
doaj   +1 more source

Generating Continental Scale Pixel-Based Surface Reflectance Composites in Coastal Regions with the Use of a Multi-Resolution Tidal Model

open access: yesRemote Sensing, 2018
Generating continental-scale pixel composites in dynamic coastal and estuarine environments presents a unique challenge, as the application of a temporal or seasonal approach to composite generation is confounded by tidal influences.
Stephen Sagar   +4 more
doaj   +1 more source

Ukrainian spiritual song of oral tradition : research state and perspectives

open access: yesOpera slavica, 2023
The author attempts to define approaches that would allow a large-scale study of the spiritual song as a phenomenon of folk tradition. For this purpose, "a top view" is formed, so to speak, from a modern point of view on the history and state of ...
Олена Ігорівна Сироїд
doaj   +1 more source

Harmonized cloud datasets for the Ozone Monitoring Instrument (OMI) and TROPOspheric Monitoring Instrument (TROPOMI) using the O2–O2 477 nm absorption band [PDF]

open access: yesAtmospheric Measurement Techniques
We present a new cloud retrieval algorithm using the O2–O2 absorption band at 477 nm, designed to provide harmonized cloud datasets from the Ozone Monitoring Instrument (OMI) and TROPOspheric Monitoring Instrument (TROPOMI).
H. Yu   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy