Zobrazeno 1 - 10
of 139
pro vyhledávání: '"Natascha Kljun"'
Autor:
Sofia Junttila, Jonas Ardö, Zhanzhang Cai, Hongxiao Jin, Natascha Kljun, Leif Klemedtsson, Alisa Krasnova, Holger Lange, Anders Lindroth, Meelis Mölder, Steffen M. Noe, Torbern Tagesson, Patrik Vestin, Per Weslien, Lars Eklundh
Publikováno v:
Science of Remote Sensing, Vol 7, Iss , Pp 100075- (2023)
Northern forest ecosystems make up an important part of the global carbon cycle. Hence, monitoring local-scale gross primary production (GPP) of northern forest is essential for understanding climatic change impacts on terrestrial carbon sequestratio
Externí odkaz:
https://doaj.org/article/398b8a41150f458abaebe0449199e798
Autor:
Sofia Junttila, Julia Kelly, Natascha Kljun, Mika Aurela, Leif Klemedtsson, Annalea Lohila, Mats B. Nilsson, Janne Rinne, Eeva-Stiina Tuittila, Patrik Vestin, Per Weslien, Lars Eklundh
Publikováno v:
Remote Sensing, Vol 13, Iss 4, p 818 (2021)
Peatlands play an important role in the global carbon cycle as they contain a large soil carbon stock. However, current climate change could potentially shift peatlands from being carbon sinks to carbon sources. Remote sensing methods provide an oppo
Externí odkaz:
https://doaj.org/article/d3bb60bf2db040fa92b4e3b3d9ec380b
Publikováno v:
Canadian Journal of Remote Sensing, Vol 43, Iss 2, Pp 215-229 (2017)
Over the last several decades the hydrologically sensitive Boreal Plains ecoregion of Western Canada has experienced significant warming and drying. To better predict implications of land cover changes on evapotranspiration (ET) and future water reso
Externí odkaz:
https://doaj.org/article/e30573be6fc34f6687a96e5123aa0314
Autor:
Patrik Vestin, Meelis Mölder, Natascha Kljun, Zhanzhang Cai, Abdulghani Hasan, Jutta Holst, Leif Klemedtsson, Anders Lindroth
Publikováno v:
Forests, Vol 11, Iss 9, p 961 (2020)
The 2015 Paris Agreement encourages stakeholders to implement sustainable forest management policies to mitigate anthropogenic emissions of greenhouse gases (GHG). The net effects of forest management on the climate and the environment are, however,
Externí odkaz:
https://doaj.org/article/5a975e3c4d6e46a39e489ba9a5e5e117
Publikováno v:
Tellus: Series B, Chemical and Physical Meteorology, Vol 67, Iss 0, Pp 1-16 (2015)
Forests are generally considered to be net sinks of atmospheric methane (CH4) because of oxidation by methanotrophic bacteria in well-aerated forests soils. However, emissions from wet forest soils, and sometimes canopy fluxes, are often neglected wh
Externí odkaz:
https://doaj.org/article/fffe737ecda74fd88d0fcd8815426563
Autor:
Craig Mahoney, Natascha Kljun, Sietse O. Los, Laura Chasmer, Jorg M. Hacker, Christopher Hopkinson, Peter R. J. North, Jacqueline A. B. Rosette, Eva van Gorsel
Publikováno v:
Remote Sensing, Vol 6, Iss 10, Pp 10051-10069 (2014)
We present a novel technique to infer ground slope angle from waveform LiDAR, known as the independent slope method (ISM). The technique is applied to large footprint waveforms (\(\sim\) mean diameter) from the Ice, Cloud and Land Elevation Satellite
Externí odkaz:
https://doaj.org/article/3352db413e284dabac02abae07efc225
Publikováno v:
Forests, Vol 5, Iss 5, Pp 992-1010 (2014)
Knowledge of the forest biomass and its change in time is crucial to understanding the carbon cycle and its interactions with climate change. LiDAR (Light Detection and Ranging) technology, in this respect, has proven to be a valuable tool, providing
Externí odkaz:
https://doaj.org/article/4f5d930578a940128246ffcca88807c8
Autor:
Julia Kelly, Natascha Kljun, Per-Ola Olsson, Laura Mihai, Bengt Liljeblad, Per Weslien, Leif Klemedtsson, Lars Eklundh
Publikováno v:
Remote Sensing, Vol 11, Iss 5, p 567 (2019)
Miniaturized thermal infrared (TIR) cameras that measure surface temperature are increasingly available for use with unmanned aerial vehicles (UAVs). However, deriving accurate temperature data from these cameras is non-trivialsince they are highly s
Externí odkaz:
https://doaj.org/article/4138a41338324209ac031ad09361686f
Publikováno v:
Meteorologische Zeitschrift, Vol 19, Iss 6, Pp 539-547 (2010)
Two models for predicting near-surface flux and concentration footprints are compared concerning their performance in the presence of heterogeneous surface conditions. One of the models is a conventional Lagrangian backward model and the second an LE
Externí odkaz:
https://doaj.org/article/3f5f6a63a8cb46b89f24844364a51847
Publikováno v:
Remote Sensing, Vol 9, Iss 1, p 59 (2017)
Spaceborne laser altimetry waveform estimates of canopy Gap Fraction (GF) vary with respect to discrete return airborne equivalents due to their greater sensitivity to reflectance differences between canopy and ground surfaces resulting from differen
Externí odkaz:
https://doaj.org/article/16fa70618ea34fbfa3b905797c0a095e