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Visar resultat 21 - 25 av 127 uppsatser som matchar ovanstående sökkriterier.

  1. 21. Fragmentation in graupel snow collisions

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Martanda Gautam; [2022]
    Nyckelord :Ecosystem Analysis; Clouds; Snow; Graupel; SIP; Fragmentation; CKE; Rime Fraction; Earth and Environmental Sciences;

    Sammanfattning : Aircraft observations of precipitating clouds with cloud top temperatures higher than -38°C have revealed that Secondary Ice Production (SIP) is responsible for presence of majority of ice particles. One such SIP mechanism is fragmentation via collisions between ice particles. LÄS MER

  3. 22. Diatoms from the late Holocene of the western Chukchi Sea, Arctic Ocean: environmental signals and palaeoceanography

    Master-uppsats, Stockholms universitet/Institutionen för geologiska vetenskaper

    Författare :Erik Browaldh; [2022]
    Nyckelord :diatoms; late holocene; SWERUS-L2-2-PC1; Herald Canyon; Chukchi Sea; ice-algae; sympagic; cryophilic; warm water diatom; Bering Sea Water species; bottom water temperature; BWT; benthic foraminifera; palaeothermometry; ice dynamics; Fragilariopsis; Fossula arctica; Paralia sulcata; Shionodiscus oestrupii; Thalassiosira simonsenii; Chaetoceros; Chaetoceros sp. 7;

    Sammanfattning : The sediment Core SWERUS-L2-2-PC1 (2PC) retrieved from the Chukchi Sea, Arctic Ocean sits in an oceanographically dynamic location at the Arctic-Pacific Ocean gateway. The 8.3 m-long core was retrieved in Herald Canyon at the marginal ice zone at 57 m depth. LÄS MER

  4. 23. Storskalig solkraft i Arktis - vilka förutsättningar finns på 69°N?

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Miljö- och energisystem

    Författare :Anton Asplund; [2022]
    Nyckelord :Solar power Arctic Bifacial LCOE PV NPV LCA GWP High latitude area NO4; Technology and Engineering;

    Sammanfattning : Norge behöver utöka sin elproduktion för att möta ett framtida ökat elbehov. Vattenkraften i Norge uppskattas endast ha 23 TWh kapacitet kvar att bygga ut och vindkraft har mött starkt motstånd på senare tid. Solkraft finns fortfarande bara på liten skala i landet men uppskattas öka kraftigt i närtid. LÄS MER

  5. 24. Non-target screening of sediment samples fromthe Canadian Arctic: comparing two different gas chromatography – high resolution mass spectrometry (GC-HRMS) techniques

    Kandidat-uppsats, Örebro universitet/Institutionen för naturvetenskap och teknik

    Författare :Mathilda Timner; [2022]
    Nyckelord :Arctic marine sediment ׀ GC×GC-HR-ToF-MS ׀ GC-Orbitrap-MS ׀ Identification ׀ Non-target screening ׀ Organic pollutants;

    Sammanfattning : Since the late 18th century, chemicals have been industrially produced, and used by consumers. Today, the number of registered chemicals are over 150 000 in North America and Europe alone, and the number is predicted to increase. LÄS MER

  7. 25. Diversification of predators in multi-trophic communities: A trait-based theoretical approach

    Master-uppsats, Lunds universitet/Examensarbeten i bioinformatik

    Författare :Julio Antonio Ayala Lopez; [2022]
    Nyckelord :Biology and Life Sciences;

    Sammanfattning : One of the main challenges in ecology and evolutionary biology is to understand how biodiversity emerges and is maintained, given the complexity of ecological and evolutionary processes combined. Understanding how multi-trophic interactions occur from a theoretical perspective is highly relevant for our understanding of diversification in complex ecosystems. LÄS MER