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| Titel |
Three years of vertically resolved CO2/CH4/CO measurements at the tallest tower in the Amazon - Amazonian Tall Tower Observatory (ATTO, Brazil) |
| VerfasserIn |
Jošt Valentin Lavrič, Jan Winderlich, David Walter, Xuguang Chi, Meinrat O. Andreae, Martin Heimann |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250110132
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| Publikation (Nr.) |
 EGU/EGU2015-10107.pdf |
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| Zusammenfassung |
| The 330 m-tall tower that is currently in its final phase of construction at the Amazonian Tall
Tower Observatory (ATTO, Brazil; 2Ë 08’S, 59Ë 00’W), is the counterpart of the 304 m-tall
tower of the Zotino Tall Tower Observatory tower (ZOTTO), located in central Siberia
(Russia; 60Ë 48’N, 89Ë 21’E). The ATTO tall tower will extend above the atmospheric
surface layer and the nocturnal stable boundary layer, and aims at delivering ground breaking
findings that will be the basis for improved climate models. While awaiting the completion of
the tall tower, a number of campaign or continuous pilot measurements are taking place on
the ATTO site at and around the currently tallest Amazonian tower and mast (80 m
a.g.l.).
Since March 2012, we run continuous high precision CO2/CH4/CO measurements in an
air-conditioned container at the foot of the 80 m tower. The sample air inlets are installed at
five levels; 79, 53, 38, 24, and 4 m a.g.l. Two frequently calibrated CRDS analyzers (G1301
and G1302; Picarro Inc., USA) are used for measuring CO2/CH4 and CO/CO2,
respectively.
Even if due to proximity of our measurements to the canopy (~ 35 m a.g.l.) the data is
influenced by local sources and sinks, it still provides a valuable insight into the diurnal and
seasonal variations of the measured gas species. Additionally, the data set has proven to be
also interesting combined with the parameters that are measured by other groups
at the site in parallel either continuously or during intensive observation periods
(e.g. VOCs, reactive trace gases, aerosols). A first analysis of the available data is
presented.
Our work was performed within the frame of the German-Brazilian project ATTO and
supported by the federal government agencies BMBF and MCT (Grant number BMBF
01LB1001A). We acknowledge the fundamental support by the Max Planck Society, INPA
and UEA. Special thanks go to the Amazonas State SDS/CEUC-RDS Uatumã. |
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