logo image for top of page

a core project of
2018WCRPspon col July2018 01 1

B Runkle: Multi-annual evapotranspiration in the Lena River Delta: Eddy covariance and remote sensing


This presentation was held at the DUE Permafrost 2014 workshop, 12th of Febuary 2014, Frascati, Italy
Workshop: climate-cryosphere.org/meetings/due-permafrost-2014


Runkle, Benjamin
Institute of Soil Science, University of Hamburg, Hamburg Germany

Evapotranspiration (ET) is a key component of the energy and water balances in permafrost tundra, establishing hydrological conditions for the next year and controlling several aspects of the carbon cycle. Its accurate measurement provides crucial information on ecosystem functioning. In this study we report field measurements from seven summers (2002-06; 2012-13) using the eddy covariance method in Russia’s Lena River Delta. Interannual differences – including two August periods with high ET and two with low ET – are locally driven more by changes in air temperature and vapor pressure deficit than in land surface characteristics or radiation. We explore predictive relationships between various land surface indicators (e.g., NDVI, LAI, LST, Growing season length) derived from remote sensing products (MODIS and ESA DUE Permafrost products) to quantify local mechanisms necessary for upscaling to the Delta region. We conclude with implications for the local carbon cycle, particularly CO2 uptake and release.

Keywords: Permafrost, hydrology, remote sensing, carbon cycle, peatlands, eddy covariance, gas exchange, environmental science, soil



Mass Balance of the Antarctic Ice Sheet 1992-2008
(Media / Mass Balance of the Antarctic Ice Sheet 1992-2008)
Mass Balance of the Antarctic Ice Sheet 1992-2008 from ERS and ICESat: Gains exceed losses - Presented by Jay Zwally, NASA Goddard, USA
(Media / 2012-Boundary-Layer-Workshop-Report)
The atmosphere-ocean boundary layer in which sea ice resides includes many complex processes that require a more realistic treatment in GCMs, particularly as models move toward full earth system descriptions. The primary purpose of the workshop was to define and discuss such coupled processes...
2008-01 No. 10 Ice and Climate News
(Media / 2008-01 No. 10 Ice and Climate News)
- CliC Scientific Steering Group (comings and goings) - Atmosphere-Ocean General Circulation Models - Global Prediction: Permafrost - Operational Sea-Ice Analysis and Forecasting at met.no - Arctic Council Climate and Cryosphere Project - Seasonal Forecast of Antarctic Sea Ice - The Global...

View all

Back to Top