Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Hans Tommervik"'
Autor:
Laura Stendardi, Stein Rune Karlsen, Eirik Malnes, Lennart Nilsen, Hans Tømmervik, Elisabeth J. Cooper, Claudia Notarnicola
Publikováno v:
Remote Sensing, Vol 14, Iss 8, p 1866 (2022)
Snow melt timing and the last day of snow cover have a significant impact on vegetation phenology in the Svalbard archipelago. The aim of this study is to assess the seasonal variations of the snow using a multi-sensor approach and to analyze the sen
Externí odkaz:
https://doaj.org/article/2b884029a347498a8d49d977f4eb3cc7
Autor:
Stein Rune Karlsen, Laura Stendardi, Hans Tømmervik, Lennart Nilsen, Ingar Arntzen, Elisabeth J. Cooper
Publikováno v:
Remote Sensing, Vol 13, Iss 15, p 3031 (2021)
The Arctic is a region that is expected to experience a high increase in temperature. Changes in the timing of phenological phases, such as the onset of growth (as observed by remote sensing), is a sensitive bio-indicator of climate change. In this p
Externí odkaz:
https://doaj.org/article/afca92d5bf9049ba98699c6c5c52c8c0
Autor:
Bogdan Zagajewski, Marlena Kycko, Hans Tømmervik, Zbigniew Bochenek, Bronisław Wojtuń, Jarle W. Bjerke, Andrzej Kłos
Publikováno v:
Acta Societatis Botanicorum Poloniae, Vol 87, Iss 4 (2018)
Remote sensing, which is based on a reflected electromagnetic spectrum, offers a wide range of research methods. It allows for the identification of plant properties, e.g., chlorophyll, but a registered signal not only comes from green parts but also
Externí odkaz:
https://doaj.org/article/82dd40af44e04a8387449340f0409e58
Autor:
Shridhar D. Jawak, Bo N. Andersen, Veijo A. Pohjola, Øystein Godøy, Christiane Hübner, Inger Jennings, Dariusz Ignatiuk, Kim Holmén, Agnar Sivertsen, Richard Hann, Hans Tømmervik, Andreas Kääb, Małgorzata Błaszczyk, Roberto Salzano, Bartłomiej Luks, Kjell Arild Høgda, Rune Storvold, Lennart Nilsen, Rosamaria Salvatori, Kottekkatu Padinchati Krishnan, Sourav Chatterjee, Dag A. Lorentzen, Rasmus Erlandsson, Tom Rune Lauknes, Eirik Malnes, Stein Rune Karlsen, Hiroyuki Enomoto, Ann Mari Fjæraa, Jie Zhang, Sabine Marty, Knut Ove Nygård, Heikki Lihavainen
Publikováno v:
Remote Sensing, Vol 13, Iss 4, p 712 (2021)
Svalbard Integrated Arctic Earth Observing System (SIOS) is an international partnership of research institutions studying the environment and climate in and around Svalbard. SIOS is developing an efficient observing system, where researchers share t
Externí odkaz:
https://doaj.org/article/24f3d822057c49a299f745aaa5a024ab
Publikováno v:
Sensors, Vol 20, Iss 7, p 2102 (2020)
In this study, we focused on three species that have proven to be vulnerable to winter stress: Empetrum nigrum, Vaccinium vitis-idaea and Hylocomium splendens. Our objective was to determine plant traits suitable for monitoring plant stress as well a
Externí odkaz:
https://doaj.org/article/401312e1db5e47e5b9eda7cd7546709b
Autor:
Stef Bokhorst, Matty P. Berg, Guro K. Edvinsen, Jacintha Ellers, Amber Heitman, Laura Jaakola, Hanne K. Mæhre, Gareth K. Phoenix, Hans Tømmervik, Jarle W. Bjerke
Publikováno v:
Frontiers in Plant Science, Vol 9 (2018)
Climate change is one of many ongoing human-induced environmental changes, but few studies consider interactive effects between multiple anthropogenic disturbances. In coastal sub-arctic heathland, we quantified the impact of a factorial design simul
Externí odkaz:
https://doaj.org/article/94cd6d8779e446cdb875767e078c22ef
Autor:
Ivana Živojinović, Jerbelle Elomina, Helga Pülzl, Karen Calanasan, Isidora Dabić, Rannveig Ólafsdóttir, Sten Siikavuopio, Audun Iversen, Roy Robertsen, Jarle Bjerke, Sigrid Engen, Hans Tommervik, Ragnheidur Bogadóttir, Sara Moioli, Seija Tuulentie, Pasi Rautio, Kristine Lynge-Pedersen, Gun Lidestav, Anna Guðrún Edvardsdòttir, Vigdis Nygaard
Publikováno v:
Journal of Land Use Science, Vol 19, Iss 1, Pp 186-210 (2024)
The European Arctic is commonly thought of as a pristine and homogeneous area. In reality, it is a diverse region experiencing growth relying on natural resource extraction. Despite local communities being primarily affected by industry activities, m
Externí odkaz:
https://doaj.org/article/e9a42364c9ee4b168c7ddacf07691f26
Autor:
Francisco Javier Ancin-Murguzur, Gregory Taff, Corine Davids, Hans Tømmervik, Jørgen Mølmann, Marit Jørgensen
Publikováno v:
Remote Sensing, Vol 11, Iss 4, p 400 (2019)
Ruminant fodder production in agricultural lands in latitudes above the Arctic Circle is constrained by short and hectic growing seasons with a 24-hour photoperiod and low growth temperatures. The use of remote sensing to measure crop production at h
Externí odkaz:
https://doaj.org/article/0323d57c2e3a40d58b932ed14226f409
Publikováno v:
Remote Sensing, Vol 5, Iss 9, Pp 4304-4318 (2013)
Global temperature is increasing, and this is affecting the vegetation phenology in many parts of the world. In Fennoscandia, as well as Northern Europe, the advances of phenological events in spring have been recorded in recent decades. In this stud
Externí odkaz:
https://doaj.org/article/93396e41b1e4415b89f70b680f6ce5dd
Autor:
Bogdan Zagajewski, Hans Tømmervik, Jarle W. Bjerke, Edwin Raczko, Zbigniew Bochenek, Andrzej Kłos, Anna Jarocińska, Samantha Lavender, Dariusz Ziółkowski
Publikováno v:
Remote Sensing, Vol 9, Iss 12, p 1289 (2017)
Remote sensing is a suitable candidate for monitoring rapid changes in Polar regions, offering high-resolution spectral, spatial and radiometric data. This paper focuses on the spectral properties of dominant plant species acquired during the first w
Externí odkaz:
https://doaj.org/article/714dfb4108a64c6e95518e650d4cb387