SiB-RAMS/LPDM modeling for evaluating regional scale CO 2 fluxes
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Transcript of SiB-RAMS/LPDM modeling for evaluating regional scale CO 2 fluxes
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SiB-RAMS/LPDM modeling for evaluating regional scale CO2 fluxes
Marek Uliasz, Colorado State University
2007 ChEAS meeting
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global CO2 - PCTM
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global CO2 - PCTM
SiB-RAMS
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global CO2 - PCTM
SiB-RAMS
LPDM
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global CO2 - PCTM
SiB-RAMS
LPDM
influence functions for concentrations and flux measurements
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Influence functions for 31 towers for 30 day sampling period starting June 9, 2004 (passive tracer)
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respiration flux
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fossil fuel flux
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assimilation flux
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WLEF 30m WLEF 396m
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WLEF 396mWLEF 30m
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Effect of local and distanst CO2 fluxesEffect of local and distanst CO2 fluxes
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SiB-RAMS vertical resolution
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SiB-RAMS vertical resolution
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WLEF 396m
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How big area around the WLEF need to be considered to allow surface CO2 fluxes to catch a larger scale concentration variability?
50 km?500 km?1000 km?Go global?
How big area around the WLEF need to be considered to allow surface CO2 fluxes to catch a larger scale concentration variability?
50 km?500 km?1000 km?Go global?
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time [hours]
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SiB-RAMS
LPDM R=50 km
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SiB-RAMS
LPDM R=200 km
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LPDM R=500 km
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time [hours]
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LPDM R=1000 km
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time [hours]
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SiB-RAMS
LPDM R=1500 km
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time [hours]
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SiB-RAMS
LPDM RAMS domain
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tracer residence time in US domain [days]
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KWKT 457m
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WLEF 396m
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AMT 107m
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ARM 60m
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CDL 30m
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FRS 20m
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HRV 30m
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WPL 10m
Tracer residence time [days] for different towers in 5800x3400 km modeling domain over continental US derived from SiB-RAMS/LPDM simulations for 30 day period (June 9 - July 8, 2004)
0 20 days
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0 12 24 36 48 60 72tracer residence time [hours]
600x600km domain
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CO2 at 396m WLEF towerinfluence functions analysis for 600x600kn domain
CO2 at 396m WLEF towerinfluence functions analysis for 600x600kn domain
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161 162 163 164 165 166 167 168 169 170 171sampling time [days]
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initial field
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161 162 163 164 165 166 167 168 169 170 171sampling time [days]
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initial field
inflow flux
WLEF 396m
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161 162 163 164 165 166 167 168 169 170 171sampling time [days]
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backgroundWLEF 396m
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161 162 163 164 165 166 167 168 169 170 171sampling time [days]
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surface flux
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161 162 163 164 165 166 167 168 169 170 171sampling time [days]
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background variations
surface flux
WLEF 396m
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161 162 163 164 165 166 167 168 169 170 171sampling time [days]
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background variationsWLEF 396m
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161 162 163 164 165 166 167 168 169 170 171sampling time [days]
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background variations
respiration
WLEF 396m
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161 162 163 164 165 166 167 168 169 170 171sampling time [days]
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CO2 [ppm]
assimilation
background variations
respiration
WLEF 396m
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161 162 163 164 165 166 167 168 169 170 171sampling time [days]
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respiration
WLEF 396m
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171 172 173 174 175 176 177 178 179 180 181sampling time [days]
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181 182 183 184 185 186 187 188 189 190 191sampling time [days]
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WLEF 396m
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162 165 168 171 174 177 180 183 186 189sampling time [days]
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WLEF 396m
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216 240 264 288 312 336 360 384 408 432 456 480
sampling time [hours]
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WLEF 396m obsSiB-RAMSSiB-RAMS/LPDM (600x600km)
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sampling time [hours]
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WLEF 396m obsSiB-RAMSSiB-RAMS/LPDM (600x600km)
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216 240 264 288 312 336 360 384 408 432 456 480
sampling time [hours]
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WLEF 396m obsSiB-RAMSSiB-RAMS/LPDM (600x600km)
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WLEF 396m obsSiB-RAMS/LPDM, c0=5
SiB-RAMS/LPDM, c0=2
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sampling time [hours]
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WLEF 396m obsSiB-RAMS/LPDM, c0=5
SiB-RAMS/LPDM, c0=2
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sampling time [hours]
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2 ( , , ) (( , , , ) ( , ,) ( ) ), )RCO AFLUX x y t R x y t A x yx ty x yβ β= +
respiration & assimilation fluxes simulated by SiB-RAMS
respiration & assimilation fluxes simulated by SiB-RAMS
time independent corrections to beestimated from concentration data
for each inversion cycle
time independent corrections to beestimated from concentration data
for each inversion cycle
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k – index over observations (sampling times and towers)i – index over source areas (grid cells)
Implementation for a given inversion cycle Implementation for a given inversion cycle