Science Keywords>PALEOCLIMATE>LAND RECORDS>TREE RINGS
Development of tree ring like proxy on arctic shrubs Cassiope tetragona to reconstruct polar climate
Entry ID: Cassiope_Arctic_Climate_Proxy_Weijers_IPY59_NL

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Summary
Abstract: Annual stem length, annual number of leaves, annual average leaf length, annual total leaf length and leaf lifespan. All of Cassiope tetragona. These parameters were measured at three sites: Ny-Ålesund and Endalen in Svalbard and for Abisko, Sweden. Same parameters were measured in 17 control and 17 Open Top Chambers plots near Ny-Ålesund. Same parameters were measured in 20 control and 20 ... View entire text

Purpose: The study aims to validate the use of annual growth parameters of the arctic dwarf shrubs Cassiope tetragona as proxy for past arctic summer temperatures. Dendrochronological techniques are applied in order to establish reliable growth-temperature transfer functions that allow temperature reconstruction on the high arctic archipelago Svalbard.

Subsequently climate-growth relationships are further experimentally assessed by manipulating growth in the field through warming of the tundra with Open Top Chambers (OTC's), lowering of the Photosynthetically Active Radiation (PAR) with tents (-50%) and doubling the ambient precipitation in field sites near Longyearbyen and Ny-Ålesund in Svalbard.
Related URL
Link: VIEW RELATED INFORMATION
Description: Faculty home page
Geographic Coverage
(Click for Interactive Map)
Spatial coordinates   
  N: 78.9   S: 68.4   E: 18.8   W: 11.9
Min Altitude: 6 M Max Altitude: 500 M

Data Set Citation
Dataset Originator/Creator: Weijers, S.
Dataset Title: Annual growth parameters of Cassiope tetragona
Dataset Publisher: Weijers, S.
Temporal Coverage
Start Date: 2008-01-15
Stop Date: 2012-01-14
Location Keywords
Science Keywords
ISO Topic Category
Platform
SORCE > Solar Radiation and Climate Experiment Ancillary Description
Instrument
SOLSTICE > Solar-Stellar Irradiance Comparison Experiment Ancillary Description
SIM > Spectral Irradiance Monitor Ancillary Description
TIM > Total Irradiance Monitor Ancillary Description
Ancillary Keywords
Data Center
Goddard Institute for Space Studies, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA Supplemental Info
Data Center URL: http://www.giss.nasa.gov/
Dataset ID: GISS_TotalSolarIrradiance1975-2008

Data Center Personnel
Name: CLAUS FROHLICH
Email: cfrohlich at pmodwrc.ch
Contact Address:
World Radiation Center
Physikalisch-Meteorologisches Observatorium-Davos
Dorfstrasse 33
City: Davos
Postal Code: CH-7260
Country: Switzerland


Data Center Personnel
Name: DR. JAMES E. HANSEN
Phone: (212) 678-5500
Email: James.E.Hansen at nasa.gov
Contact Address:
NASA Goddard Institute for Space Studies
2880 Broadway
City: New York
Province or State: New York
Postal Code: 10025
Country: USA
Personnel
MICHAEL MORAHAN
Role: CLIMATE DIAGNOSTIC RECORD AUTHOR
Phone: 301-614-5107
Fax: 301-614-5304
Email: Michael.P.Morahan at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Code 610.2
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA
Publications/References
Frohlich, C., and J. Lean, 2004. Solar radiative output and its variability: Evidence and mechanisms. Astron. Astrophys. Rev., 12, 273-320, doi:10.1007/s00159-004-0024-1.

Hansen, J., Mki. Sato, P. Kharecha, and K. von Schuckmann (2011), Earth's energy imbalance and implications., 11, 13421-13449, Atmos. Chem. Phys., doi:doi:10.5194/acp-11-13421-2011, http://pubs.giss.nasa.gov/abs/ha06510a.html
Creation and Review Dates
DIF Creation Date: 2010-03-11
Last DIF Revision Date: 2012-03-02

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