Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
An Optical Sensor Network for Vegetation Phenology Monitoring and Satellite Data Calibration
Lund Univ, Dept Earth & Ecosyst Sci, SE-22362 Lund, Sweden..ORCID-id: 0000-0001-7644-6517
Lund Univ, Dept Earth & Ecosyst Sci, SE-22362 Lund, Sweden..ORCID-id: 0000-0003-3100-7814
Lund Univ, Dept Earth & Ecosyst Sci, SE-22362 Lund, Sweden..
Univ Copenhagen, Dept Geog & Geol, DK-1350 Copenhagen K, Denmark..
Visa övriga samt affilieringar
Ansvarig organisation
2011 (Engelska)Ingår i: Sensors, ISSN 1424-8220, E-ISSN 1424-8220, Vol. 11, nr 8, s. 7678-7709Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

We present a network of sites across Fennoscandia for optical sampling of vegetation properties relevant for phenology monitoring and satellite data calibration. The network currently consists of five sites, distributed along an N-S gradient through Sweden and Finland. Two sites are located in coniferous forests, one in a deciduous forest, and two on peatland. The instrumentation consists of dual-beam sensors measuring incoming and reflected red, green, NIR, and PAR fluxes at 10-min intervals, year-round. The sensors are mounted on separate masts or in flux towers in order to capture radiation reflected from within the flux footprint of current eddy covariance measurements. Our computations and model simulations demonstrate the validity of using off-nadir sampling, and we show the results from the first year of measurement. NDVI is computed and compared to that of the MODIS instrument on-board Aqua and Terra satellite platforms. PAR fluxes are partitioned into reflected and absorbed components for the ground and canopy. The measurements demonstrate that the instrumentation provides detailed information about the vegetation phenology and variations in reflectance due to snow cover variations and vegetation development. Valuable information about PAR absorption of ground and canopy is obtained that may be linked to vegetation productivity.

Ort, förlag, år, upplaga, sidor
2011. Vol. 11, nr 8, s. 7678-7709
Nyckelord [en]
optical sampling, Normalized Difference Vegetation Index (NDVI), remote sensing, spectral sensor, photosynthetically active radiation (PAR), phenology
Nationell ämneskategori
Naturvetenskap
Identifikatorer
URN: urn:nbn:se:polar:diva-3506DOI: 10.3390/s110807678ISI: 000294253900022PubMedID: 22164039OAI: oai:DiVA.org:polar-3506DiVA, id: diva2:1083470
Tillgänglig från: 2017-03-21 Skapad: 2017-03-21 Senast uppdaterad: 2017-11-29

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltextPubMed

Sök vidare i DiVA

Av författaren/redaktören
Eklundh, LarsJin, Hongxiao
I samma tidskrift
Sensors
Naturvetenskap

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
pubmed
urn-nbn

Altmetricpoäng

doi
pubmed
urn-nbn
Totalt: 24 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf