GISP 2003 / Khon Keaen, Thailand1 Summary and Follow on of GAME- Siberia Activity Takeshi OHTA...

GISP 2003 / Khon Keaen, Thailand 1

Summary and Follow on of

GAME- Siberia ActivityTakeshi OHTA

Nagoya University, JAPAN

FORSGC, JAPAN


Activities Water and energy exchanges above typical land surface 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　

/ cross cutting studies Key words; Phenology, Tree ages, Permafrost, Snowmelt water

Water balance in the Lena river basin Key words; spatial distribution, permafrost

Modeling of water and energy exchange Key words; winter processes

Regional distribution of the fluxes obtained from the airplane observations -> ABL/AAN

Date set Key words; Dataset CD-ROM

Domestic workshop including not only GAME-Siberia but also other projects related to Siberian regions Key words; High-speed information exchanges


Water and energy exchanges Importance of phenology

There was a difference between these two forest types in spring seasons.

Effects of tree ages and tree species There was no differences between the young and old stands,

and larch and pine forets. Role of permafrost

Permafrost was buffer of the annual variation of precipitation for evapotranspiration.

Role of snow melt water Release of latent heat caused by refreezing of snowmelt wate

r was important for the increase of soiltemp.


Water balance and runoff characteristics 　　　　　　　　　　　　　　　　　　　 in the Lena river basin There was a significant difference

of water budget in the Lena river basin.

Direct runoff characteristics changed according to the seasonal variation of permafrost thawing depth.

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Dir

ect r

unof

f ra

tio

Jun. Jul. Aug. Sep.

Figure 9. Seasonal change in direct runoff ratio.

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essi

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radi

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May Jun. Jul. Aug. Sep.

Figure 11. Seasonal changes in recession gradient.

1st-comp.2nd-comp.3rd-comp.


Modeling of water and energy exchange

The winter processes, e.g. snow interception loss, were slotted into the basic land surface model. Solid water storage on the canopy is assumed to be about five

times of rainfall storage. The role of snow interception might be important for water and energy cycle in the boreal zone.

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15-Apr 14- J ul 12-Oct 10- J an 10-Apr 9- J ul 7-Oct

Liqu

id w

ater

sto

rage

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m)

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Sol

id w

ater

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LiquidSolid


Date set The dataset CD obtained from

GAME-Siberia was published in November, 2003. The CD is delivered during this meeting.


Domestic workshop including other projects related to Siberian regions A number of project, e.g. IGBP, Fluxnet, promoted b

y Japanese foundation are operated in eastern Siberia. It is necessary to implement high-speed information exchanges.

Domestic WS Objectives

Summarizing the results obtained from GAME-Siberia Information exchanges among the science projects in Siberia

Date and Place 17 – 19 Dec., 2004 Tokyo


Follow on -Major topics unsolved in GAME-Siberis- The effects of plant (forest) ecosystem and physiology

Ecological effect: stand structure (e.g. LAI, Stand density, Crown Projection) aerodyanamics, energy balance on the floors and so on.

Physioligical effects canopy conductance vs environment vs tree species

The winter processes Snow interception Heterogeneity of micrometeorological condition snow/permafrost thawing

Long-term variations Warming issue Land use change


Follow on -Project and/or Program- Frontier Observational Research System for Global Change -

FORSGC - Winter processes, Regional systems, Long-term monitoring 1999 -

Core Research for Evolutional Science and Technology - CREST-

The effects of biosphere on the water, energy an carbon cycles in boreal forest zone

2002 - 2007 Northern Eurasian Earth Science Partnership Initiative - NEESPI -

An umbrella project for a number of project in northern Eurasia 2003 – By NASA and RAS


-FORSGC – cooperation with CREST Landsurface conditions related with the e

nergy cycle and their long-term monitoring Long-term monitoring of soil temp. and soil mo

isture Changes on permaforst cased by the warming

issue and landuse change Water and energy exchanges in boreal fo

rest during the winter season Snow/permafrost thawing characteristics Snow interception loss

Runoff processes in Siberian region Modeling of the above processes Data-base of the boreal zone FORSGC Study

Area


- CREST – cooperation with FORSGC

Plant physiological effects Responses of canopy conductance to environmental variab

les Climatic conditions and tree species and/or forest types

Forest ecological effects Canopy structure and aerodynamic characteristics Evapotranspiration from forest floors Winter processes

Spatial & temporal distributions of physiological and ecological effects What is the controlling factors for these distributions?

Modeling of physiological/ecological effects in the landsurface skeam Estimating of on water/energy/carbon exchanges caused b

y the biosphere changes under the global changes

CREST Study Line


- NEESPI - NEESPI’s Role

To provide the “framework” for developing an integrated understanding of the Earth system for this part of the globe

NEESPI’s Goal Establish a large scale, interdisciplinary program b

etween the ecosystem, atmosphere and human dynamics

Develop a science plan, initially based on U.S. & Russia Earth Science research funding

Assess institution, information and infrastructure resources in Russia & other northern Eurasia

Prepare research proposal Develop international agreements that facilitate joi

nt research Implement a high-speed information and data exc

hange networkNEESPI Study Area

GISP 2003 / Khon Keaen, Thailand1 Summary and Follow on of GAME- Siberia Activity Takeshi OHTA...

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