Browsing NILU Brage by Author "Vallejo, Islen"

Now showing items 1-5 of 5

    • Data fusion of sparse, heterogeneous, and mobile sensor devices using adaptive distance attention 

      Lepioufle, Jean-Marie; Schneider, Philipp; Hamer, Paul David; Ødegård, Rune Åvar; Vallejo, Islen; Cao, Tuan-Vu; Taherkordi, Amirhosein; Wojcikowski, Marek (Peer reviewed; Journal article, 2024)
      In environmental science, where information from sensor devices are sparse, data fusion for mapping purposes is often based on geostatistical approaches. We propose a methodology called adaptive distance attention that ...

    • The influence of vegetation drought stress on formaldehyde and ozone distributions over a central European city 

      Trimmel, Heidelinde; Hamer, Paul David; Mayer, Monika; Schreier, Stefan F.; Weihs, Philipp; Eitzinger, Josef; Sandén, Hans; Fitzky, Anne Charlott; Richter, Andreas; Calvet, Jean-Christophe; Bonan, Bertrand; Meurey, Catherine; Vallejo, Islen; Eckhardt, Sabine; Sousa Santos, Gabriela; Oumami, Safae; Arteta, Joaquim; Marécal, Virginie; Tarrasón, Leonor; Karl, Thomas; Rieder, Harald E. (Peer reviewed; Journal article, 2023)
      To estimate the effect of vegetation stress and changes in biogenic volatile organic compound (BVOC) emissions on urban ozone (O3) levels we perform a systematic, observation-based analysis of the relationship between ...

    • A surrogate-assisted measurement correction method for accurate and low-cost monitoring of particulate matter pollutants 

      Wojcikowski, Marek; Pankiewicz, Bogdan; Bekasiewicz, Adrian; Cao, Tuan-Vu; Lepioufle, Jean-Marie; Vallejo, Islen; Ødegård, Rune Åvar; Ha, Hoai Phuong (Peer reviewed; Journal article, 2022)
      Air pollution involves multiple health and economic challenges. Its accurate and low-cost monitoring is important for developing services dedicated to reduce the exposure of living beings to the pollution. Particulate ...

    • Teknisk løsning for nasjonalt beregningsverktøy. Dataflyt, systemdesign og krav til infrastruktur. 

      Kjølerbakken, Morgan; Vallejo, Islen (NILU OR;13/2015, Research report, 2015)
      Rapporten beskriver dataflyt, systemdesign og krav til infrastruktur for et system som modellerer og beregner luftkvalitet. Rapporten inneholder også beskrivelse av brukergrensesnittet i en webløsning.

    • Webcrawling and machine learning as a new approach for the spatial distribution of atmospheric emissions 

      Lopez-Aparicio, Susana; Grythe, Henrik; Vogt, Matthias; Pierce, Matthew; Vallejo, Islen (Journal article; Peer reviewed, 2018)
      In this study we apply two methods for data collection that are relatively new in the field of atmospheric science. The two developed methods are designed to collect essential geo-localized information to be used as input ...