High-resolution climate reconstructions from varved Arctic lakes: exploring the potential and limits of non-destructive analytical techniques

Description: Das Projekt "High-resolution climate reconstructions from varved Arctic lakes: exploring the potential and limits of non-destructive analytical techniques" wird vom Umweltbundesamt gefördert und von Universität Bern, Geographisches Institut, Gruppe für Klimatologie,Meteorologie durchgeführt. This project centered on the creation of a high-resolution climate reconstruction from Arctic lake sediments and investigation of the potential of high resolution scanning methods, in particular, reflectance spectroscopy. The most significant result was the development of a new approach to calibrate high-resolution biogeochemical measurements (e.g. reflectance spectroscopy or XRF scanning) by combining them with paleothermometer data (e.g. Alkenones or Tex86). This 'proxy-to-proxy' method is especially significant for the Arctic region where a 'calibration-in-time' technique cannot always be applied due to the short and sparse meteorological data network and the difficulties in precisely dating modern sediments. In this study scanning reflectance data from a lake in Western Greenland were calibrated using Alkenone data to create a new high-resolution 6000-year long temperature record. The resolution of the original temperature reconstruction was enhanced to resolve decadal to subdecadal changes, compared to an original multidecaldal to centennial resolution.

Types:

SupportProgram

Origin: /Bund/UBA/UFORDAT

Tags: Paläoklimatologie ? Seen ? Grönland ? Kalibrierung ? Klimatologie ? Meteorologie ? Seensediment ? Datenverbund ? Datierung ? Reflexionsmessung ? Spektralanalyse ? Temperatur ? Thermografie ? Wetterdaten ? Arktis ? Messung ? Daten ? Messdaten ? Reflexion ? Studie ? Technik ? Sediment ? Klima ? Gebiet ? reflectance spectroscopy ? ANGEWANDT ? KURZ ? METHODE ? NEU ? POTENZIAL ? PROJEKT ? See [Binnengewässer] ? UMGESTALTUNG ? UNTERSUCHUNG ? VERGLEICHEN ? X-ray fluorescence ? digital image analysis ? high-performance liquid chromatography ? in-situ reflectance spectroscopy ? lake sediments ? ANALYTISCH ? varved lake sediments ? BIOGEOCHEMISCH ? EINGESCHRAENKT ? ENTWICKLUNG ? ERGEBNIS ?

License: cc-by-nc-nd/4.0

Language: Deutsch

Organisations

• Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (Bereitsteller*in)
• Umweltbundesamt (Bereitsteller*in)
• Universität Bern, Geographisches Institut, Gruppe für Klimatologie,Meteorologie (Betreiber*in)

Time ranges: 2009-07-01 - 2010-06-30

Alternatives

• Language: Englisch/English https://ufordat.uba.de/

Status

Aktiv

Quality score

• Overall: 0.37
• Findability: 0.33

  • Description: 0.29
  • Identifier: false
  • Keywords: 0.52
  • Spatial: NoRegion (0.00)
  • Temporal: true
• Accessibility: 0.50

  • Landing page: Unknown (0.00)
  • Direct access: false
  • Publicly accessible: true
• Interoperability: 0.00

  • Open file format: false
  • Media type: false
  • Machine-readable metadata: false
  • Machine-readable data: false
• Reusability: 0.67

  • License: ClearlySpecifiedAndFree (1.00)
  • Contact info: false
  • Publisher info: true

Accessed 1 times.