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Pallas-Sammaltunturi, GAW Station, Finland
Site Latitude | 67° 58' 12.00" N (67.97000 °N) | |||
Site Longitude | 24° 7' 12.00" E (24.12000 °E) | |||
Site Elevation | 560.0 masl | |||
Site code | PAL | |||
Dataset | co2_pal_surface-insitu_30_marine (GLOBALVIEW identifier PAL_30C0) | |||
Assimilated | Yes | |||
Selection scheme | Marine selection includes non-local data, for which 5-day back trajectory is >70% of the time over sea, and remaining outliers are rejected. | |||
Data provider | Juha Hatakka, Finnish Meteorological Institute, Climate Change Research, P.O.Box 503, FI-00101 Helsinki, Finland, and Tuula Aalto, Finnish Meteorological Institute, Climate Change Research, P.O.Box 503, FI-00101 Helsinki, Finland | |||
Laboratory |
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Download these data via ObsPack. |
(a) Time series of CO2 mole fractions, both simulated and observed, at this CarbonTracker observation site. In the top panel, measured mole fractions (open black circles) are plotted along with CarbonTracker simulated values (filled light blue circles). Any observations that CarbonTracker can not assimilate successfully are shown as filled red circles.
(b) The time series of model residuals--the difference between the simulated and measured mole fractions--shown with dark green filled circles. These residuals should be uncorrelated in time, unbiased (i.e., have a mean of zero), and distributed normally. Also shown in the lower panel is the imposed model-data mismatch ("MDM", orange lines), which in part defines the rejection criterion (see documentation). Any model first guess value which is more than three times the MDM away from zero, after accounting for potential adjustments to the simulated value due to optimizing fluxes, is rejected by the optimization system. Rejected values, if there are any, are shown with filled red circles.