KYTALYK /CHOKURDAGH site PAGE21 WP4 Meeting, Department of Geography and Geology –University of Copenaghen 9-10 February 2012 (1)Vrije Universiteit, Faculty.

KYTALYK /CHOKURDAGH site

PAGE21 WP4 Meeting, Department of Geography and Geology –University of Copenaghen

9-10 February 2012

(1)Vrije Universiteit, Faculty of Earth and Life Sciences Amsterdam, The Netherlands 

Ko van Huissteden(1)

Luca Belelli Marchesini(1)

PAGE21 observation sites in Siberian tundra

Cherskii, continuous tundra

Kytalyk, continuous tundra

Samoylov Island, continuous tundra

Vorkuta, discontinuous boreal forest

Nadym, discontinuous boreal forest

Yakutsk

Kytalyk

Kytalyk research station (70o 49’ 45’’N; 147o 29’ 39’’E)

Kytalyk

Kytalyk

Yakutsk

Quite a remote site!!Equipment (and researchers) travel:by airplane from Yakutsk to Chokurdakh Airport (1239 Km)From Chokurdakh to destination by boat (~3hrs), despite air distance only 30 km.

Chokhurdakh

Kytalyk site: main features

Cold continental climateMean annual air T: -10.5oCAir T range: [-25,-45] oC winter

[+5,+25] oC summerGrowing season limited to July and August

Vegetation: graminoid tussock tundra (Walker et al., 2005)(tussock-sedge, dwarf shrub, moss tundra)

'Yedoma': organic-rich (about 2% carbon by mass) Pleistocene-age loess permafrost with ice content of 50–90% by volume.

Active thaw lakes

Kytalyk landscape spatial variability

Dry/wet tundra on drained thaw lake bottomactive layer 20-40 cmactive layer tickest on wet locations

River floodplain,active layer > 40 cm

Dry tundra on 'ice complex' hills and plateausactive layer 20 - 40 cm

Lakes: 20% of area

floodplain

'ice complex’ hills

drained thaw lakes

Ecosystem scale fluxes: NEE and surface energyMicrometeorological (Eddy Covariance) measurements of:

CO2 and energy turbulent fluxes (H, LE) (relevant for WP2)

operated since 2003 with maximum duration from early spring (April) to late autumn ( end of September)

CO2 vertical profile measurements added in 2008

Location: thaw lake bottom

* start of measurementsx end of measurements

(Parmentier et al. JGR 2011)

Meteo tower:wind profile,air temperature and humidityupward, downward PAR radiationnet radiation (LW+SW)rainatm. pressure

Eddy covariance tower:3D wind speed sonic temperatureCO2 ,H2O molar densitiesCH4 with laser spectroscopy

Soil temperature profiles (20 sensors)Soil heat flux (4 replicates)Deeper borehole: 6 m, since 2010, operated by Hokkaido University (Go Iwahana / Atsuko Sugimoto)

Measured variables

Thaw lake flux tower (#1)

CH4 eddy covariance measurements started in 2008 but…

2010: inoperable methane analyzer due to power supply failure2011: few good quality data in due hardware communication problems

EC tower (#2) for CO2/H2O/CH4 fluxes installed over the river floodplain in June 2011

LI7700 open path analyzer failure- no methane fluxes data collected yet.

Ecosystem scale methane fluxes

DLT-100Cavity Ringdown Laser

Los Gatos Researchscrollpump

Gill R3-50Sonic

anemometer

data logging

power supply:180 kg 5 kW diesel generatorwind generatorssolar panels

LI7500CO2/H2O

IRGA

CO2, CH

4, N

2O

Chambers (opaque, transparent) +photo-acoustic multi gas analyzer (INNOVA)

1-6 week(s) summer campaigns since 2004

Location: thaw lake bottom, river plain

Leaf photosynthesis measurements

Chamber based measurements

Wet / dry tundra transect

flux chamber transects 2010

Ice-rich Pleistocene deposits with mass wasting (down slope movement)

Floodplain transect

CH4 emission outside the growing seasonMastepanov et al., 2009 (Nature): tundra in northern Greenland has high CH4 emission in the autumnescape from the stored CH4 during freezing? Not measured so far because of logistical difficulties in Kytalyk

Involved scientific staff:•Ko van Huissteden (PI); [email protected]•Luca Belelli Marchesini (post doc) ; [email protected]•Angela Gallagher (PhD)*; [email protected]•Artem Budishchev (PhD)*; [email protected]

*cooperation with Wageningen University in manipulative experiments on vegetation/active layer.

Looking forward to start..

Plan 2012

1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4(CO2,H2O)

(CH4)

(CO2,H2O)

(CH4)

chambers (CO2,CH4,N2O) ?

October

Novem

ber

flux tower #1

flux tower #2

staff

April

May

June

July

August

September