Near-real-time detection of unexpected atmospheric events using principal component analysis on the Infrared Atmospheric Sounding Interferometer (IASI) radiances [PDF]
Atmospheric Measurement Techniques, 2023 The three Infrared Atmospheric Sounding Interferometer (IASI) instruments on board the Metop family of satellites have been sounding the atmospheric composition since 2006.
A. Vu Van +13 more
doaj +1 more source
The impact of organic pollutants from Indonesian peatland fires on the tropospheric and lower stratospheric composition [PDF]
Atmospheric Chemistry and Physics, 2021 The particularly strong dry season in Indonesia in 2015, caused by an exceptionally strong El Niño, led to severe peatland fires resulting in high volatile organic compound (VOC) biomass burning emissions.
S. Rosanka +6 more
doaj +1 more source
Multiscale observations of NH3 around Toronto, Canada [PDF]
Atmospheric Measurement Techniques, 2021 Ammonia (NH3) is a major source of nitrates in the atmosphere and a major source of fine particulate matter. As such, there have been increasing efforts to measure the atmospheric abundance of NH3 and its spatial and temporal variability.
S. Yamanouchi +8 more
doaj +1 more source
Online Square-into-Square Packing [PDF]
Algorithmica, 2013 In 1967, Moon and Moser proved a tight bound on the critical density of squares in squares: any set of squares with a total area of at most 1/2 can be packed into a unit square, which is tight. The proof requires full knowledge of the set, as the algorithmic solution consists in sorting the objects by decreasing size, and packing them greedily into ...
Fekete, Sándor P. +1 more
openaire +2 more sources
An integrated approach to assessing the ecological state of urban park soils, Kirov, Russia
Юг России: экология, развитие, 2023 Aim. Assess the ecological state of soils in park areas and public gardens in the city of Kirov, Kirov region, Russia, which are located near areas of heavy traffic, using an integrated approach based on data from physicochemical, microbiological ...
S. G. Skugoreva +6 more
doaj +1 more source
A roadmap to estimating agricultural ammonia volatilization over Europe using satellite observations and simulation data [PDF]
Atmospheric Chemistry and Physics, 2023 Ammonia (NH3) is one of the most important gases emitted from agricultural practices. It affects air quality and the overall climate and is in turn influenced by long-term climate trends as well as by short-term fluctuations in local and regional ...
R. Abeed +10 more
doaj +1 more source
Irreducibility of tensor squares, symmetric squares and alternating squares [PDF]
Pacific Journal of Mathematics, 2002 The authors investigate the question when the tensor square, the alternating square, or the symmetric square of an absolutely irreducible projective representation \(V\) of an almost simple group \(G\) is again irreducible. The information about such representations can be used in the study of the maximal subgroups of simple classical groups of Lie ...
Magaard, Kay +2 more
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Magic Square from Yang-Mills Squared [PDF]
Physical Review Letters, 2014 4 pages, refs 11 and 12 added, footnote 1 modified.
Borsten, L. +3 more
openaire +3 more sources
Atmospheric ammonia variability and link with particulate matter formation: a case study over the Paris area [PDF]
Atmospheric Chemistry and Physics, 2020 The Paris megacity experiences frequent particulate matter (i.e.PM2.5, particulate matter with a diameter less than 2.5 µm) pollution episodes in spring (March–April).
C. Viatte +11 more
doaj +1 more source
Computation of sum of squares polynomials from data points [PDF]
, 2020 We propose an iterative algorithm for the numerical computation of sums of squares of polynomials approximating given data at prescribed interpolation points.
Després, Bruno, Herda, Maxime
core +4 more sources