Unterschiede zwischen den Revisionen 2 und 86 (über 84 Versionen hinweg)

Trace gas observations with Los Gatos ICOS Analyzers on the FZJ meteorological tower

USE OF THE DATA

The data here are provided free of charge and you are free to use them as you like, provided you confer to thte following terms and conditions

The data have been carefully quality checked as described below. However, we do not give any guarantee whatsoever with respect to the accuracy of the data and information provided, and under no circumstances will we accept liability claims (if you do find or suspect errors or inconsistencies, please let us know and we will try to fix it).
The data are acquired and provided by Forschungszentrum Jülich GmbH, Institute for Energy and Climate Research, IEK-7: Stratosphere, which should be acknowledged with any use of the data.
In case the data are used extensively (i.e. representing a major contribution) in a scientific publication, please consider offering co-authorship to those making the efforts to acquire and quality check these data.
CONTACT: Marc von Hobe, Forschungszentrum Jülich GmbH, IEK-7, Tel.: +49 2461 614620

100 m Platform, Fast Greenhouse Gas Analyzer, CO2, CH4, H2O

Near real time data of the past 24 hours can be viewed here.

Past data starting from February 2014 can be downloaded from the table below. Data are grouped in monthly files of 10-minute averages.
If you would like to get older data or data with higher time resolution, please contact Marc von Hobe.

Month	Graph	Data file	Accuracy¹	Precision²	Remarks
Sep 2014	fgga2014_09.png	fzj100m_2014_09.csv	CO₂: +2.5/-4.5 ppm	CO₂: 0.7 ppm CH₄: 0.003 ppm
Aug 2014	fgga2014_08.png	fzj100m_2014_08.csv	CO₂: +2.5/-4.5 ppm	CO₂: 0.6 ppm CH₄: 0.003 ppm
Jul 2014	fgga2014_07.png	fzj100m_2014_07.csv	CO₂: +2.5/-4.0 ppm	CO₂: 0.7 ppm CH₄: 0.003 ppm
Jun 2014	fgga2014_06.png	fzj100m_2014_06.csv	CO₂: +2.5/-5.5 ppm	CO₂: 0.6 ppm CH₄: 0.003 ppm
May 2014	fgga2014_05.png	fzj100m_2014_05.csv	CO₂: +2.5/-2.5 ppm	CO₂: 0.6 ppm CH₄: 0.003 ppm
Apr 2014	fgga2014_04.png	fzj100m_2014_04.csv	CO₂: +2.5/-4.5 ppm	CO₂: 0.6 ppm CH₄: 0.003 ppm
Mar 2014	fgga2014_03.png	fzj100m_2014_03.csv	CO₂: +4.5/-2.5 ppm	CO₂: 0.5 ppm CH₄: 0.003 ppm
Feb 2014	fgga2014_02.png	fzj100m_2014_02.csv	CO₂: +/- 4.5 ppm	CO₂: 0.6 ppm CH₄: 0.004 ppm

The FGGA is compared to a CO₂ standard gas approximately every two weeks. There are currently no standards for CH₄ and H₂O. However, because it is a direct spectroscopic method over entire absorption lines with known line characteristics, accuracy for all gases is expected to fall within 2 %.
¹Accuracy is given here in terms of the maximum deviation between FGGA and the CO₂ standard, combined with the 2.5 ppm uncertainty of the standard.
²Instrument presision is determined as the standard deviation determined during the standard measurements.

Full specifications of the Fast Greenhouse Gas Analyzer are found here (note that ours is the 2009 model, not the current one).

20 m Platform, Mid Infrared Cavity Enhanced Spectrometer (MICA) CO2, CO, H2O

Month	Graph	Data file	Accuracy¹	Precision²	Remarks
Sep 2014	ccia2014_09.png	fzj20m_2014_09.csv	CO₂: +4.5/-7.5 ppm	CO₂: 0.3 ppm	Due to the temporary absence of the MICA instrument (for a ship cruise in the Indian Ocean), CO₂ measurements from 2. April, 12:35 utc have been made by a Carbon Dioxide Isotope Analyzer (2009 model). Starting in mid-May, there have been problems with the internal pressure regulation. The resulting CO2 bias has been experimentally determined and data have been corrected, introducing an additional uncertainty of about 2 ppm, which has been added to the accuracy in this table. Because pressure changes are slow, precision is not affected. At cavity pressure below 22 hPa, the corrections function is not well understood, and data were discarded when the pressure dropped below this value.
Aug 2014	ccia2014_08.png	fzj20m_2014_08.csv	CO₂: +4.5/-7.5 ppm	CO₂: 0.3 ppm
Jul 2014	ccia2014_07.png	fzj20m_2014_07.csv	CO₂: +4.5/-7.5 ppm	CO₂: 0.3 ppm
Jun 2014	ccia2014_06.png	fzj20m_2014_06.csv	CO₂: +7.5/-4.5 ppm	CO₂: 0.3 ppm
May 2014	ccia2014_05.png	fzj20m_2014_05.csv	CO₂: +4.5/-12.5 ppm	CO₂: 0.4 ppm
Apr 2014	ccia2014_04.png	fzj20m_2014_04.csv	CO₂: +2.5/-6.5 ppm	CO₂: 0.4 ppm
Mar 2014	mica2014_03.png	fzj20m_2014_03.csv	CO₂: +2.5/-2.5 ppm	CO₂: 0.4 ppm CO: 2.3 ppb
Feb 2014	mica2014_02.png	fzj20m_2014_02.csv	CO₂: +3.5/-2.5 ppm	CO₂: 0.5 ppm CO: 2.3 ppb

The instrument is compared to a CO₂ standard gas approximately every two weeks. There are currently no standards for CO and H₂O. However, because it is a direct spectroscopic method over entire absorption lines with known line characteristics, accuracy for all gases is expected to fall within 2 %.
¹Accuracy is given here in terms of the maximum deviation between MICA and the CO₂ standard, combined with the 2.5 ppm uncertainty of the standard.
²Instrument presision is determined as the standard deviation determined during the standard measurements.

Meteorological data

An overview of the meteorological data measured at the FZJ tower is given at http://www.fz-juelich.de/gs/DE/UeberUns/Organisation/S-U/Meteorologie/wetter/wetterdaten_node.html. These data are also archived in 10-minute-averages and can be obtained from Dr. Axel Knaps.

Our Team

Current operation and maintenance of ICOS instruments: MarcVonHobe, CorinnaKloss, NicoleSpelten, AnneRichter (all IEK-7)

Special thanks to former IEK-7 student Stephanie Schrade, who carried out the original installations of the analyzers at the meteorological tower

AMICA: TowerObservations (zuletzt geändert am 2017-11-24 13:49:58 durch MarcVonHobe)

-  ⇤ ← Revision 2 vom 2014-05-20 19:58:48 → 
  Größe: 818
  Autor: MarcVonHobe
  Kommentar:
+   ← Revision 86 vom 2014-09-30 12:58:29 → ⇥
  Größe: 8790
  Autor: HannaPlaggenborg
  Kommentar:
-Gelöschter Text ist auf diese Art markiert.
+Hinzugefügter Text ist auf diese Art markiert.
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+#acl AdminGroup:admin,read,write,delete,revert UserGroup:read,write GuestGroup:read All:read
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+{{{#!wiki red/solid
==== USE OF THE DATA ====
The data here are provided free of charge and you are free to use them as you like, provided you confer to thte following '''<<Color(red: terms and conditions)>>'''
 1. The data have been carefully quality checked as described below. However, we do not give any guarantee whatsoever with respect to the accuracy of the data and information provided, and under no circumstances will we accept liability claims (if you do find or suspect errors or inconsistencies, please let us know and we will try to fix it).
 2. The data are acquired and provided by '''Forschungszentrum Jülich GmbH, Institute for Energy and Climate Research, IEK-7: Stratosphere''', which should be acknowledged with any use of the data.
 3. In case the data are used extensively (i.e. representing a major contribution) in a scientific publication, please consider offering co-authorship to those making the efforts to acquire and quality check these data.
 4. CONTACT: '''[[mailto:m.von.hobe@fz-juelich.de|Marc von Hobe, Forschungszentrum Jülich GmbH, IEK-7, Tel.: +49 2461 614620]]'''
}}}

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-Zeile 10:
+Zeile 22:
-||'''Month'''||'''Graph'''||'''Data file'''||'''Accuracy'''||'''Precision'''||'''Remarks'''||
||May 2014|| || || || || ||
||Apr 2014|| || || || || ||
||Mar 2014|| || || || || ||
||Feb 2014|| || || || || ||
+||<#8080FF> '''Month'''||<#8080FF> '''Graph'''||<#8080FF> '''Data file'''||<#8080FF> '''Accuracy~-^1^-~'''||<#8080FF> '''Precision~-^2^-~'''||<#8080FF> '''Remarks'''||
||<#E0E0FF> Sep 2014||<#E0E0FF> [[attachment:fgga2014_09.png]] ||<#E0E0FF> [[attachment:fzj100m_2014_09.csv]] ||<#E0E0FF>~- CO,,2,,: +2.5/-4.5 ppm-~  ||<#E0E0FF>~- CO,,2,,: 0.7 ppm <<BR>> CH,,4,,: 0.003 ppm -~||<#E0E0FF>  ||
||<#E0E0FF> Aug 2014||<#E0E0FF> [[attachment:fgga2014_08.png]] ||<#E0E0FF> [[attachment:fzj100m_2014_08.csv]] ||<#E0E0FF>~- CO,,2,,: +2.5/-4.5 ppm-~  ||<#E0E0FF>~- CO,,2,,: 0.6 ppm <<BR>> CH,,4,,: 0.003 ppm -~||<#E0E0FF>  ||
||<#E0E0FF> Jul 2014||<#E0E0FF> [[attachment:fgga2014_07.png]] ||<#E0E0FF> [[attachment:fzj100m_2014_07.csv]] ||<#E0E0FF>~- CO,,2,,: +2.5/-4.0 ppm-~  ||<#E0E0FF>~- CO,,2,,: 0.7 ppm <<BR>> CH,,4,,: 0.003 ppm -~||<#E0E0FF>  ||
||<#E0E0FF> Jun 2014||<#E0E0FF> [[attachment:fgga2014_06.png]] ||<#E0E0FF> [[attachment:fzj100m_2014_06.csv]] ||<#E0E0FF>~- CO,,2,,: +2.5/-5.5 ppm-~  ||<#E0E0FF>~- CO,,2,,: 0.6 ppm <<BR>> CH,,4,,: 0.003 ppm -~||<#E0E0FF>  ||
||<#E0E0FF> May 2014||<#E0E0FF> [[attachment:fgga2014_05.png]] ||<#E0E0FF> [[attachment:fzj100m_2014_05.csv]] ||<#E0E0FF>~- CO,,2,,: +2.5/-2.5 ppm-~  ||<#E0E0FF>~- CO,,2,,: 0.6 ppm <<BR>> CH,,4,,: 0.003 ppm -~||<#E0E0FF>  ||
||<#E0E0FF> Apr 2014||<#E0E0FF> [[attachment:fgga2014_04.png]] ||<#E0E0FF> [[attachment:fzj100m_2014_04.csv]] ||<#E0E0FF>~- CO,,2,,: +2.5/-4.5 ppm-~  ||<#E0E0FF>~- CO,,2,,: 0.6 ppm <<BR>> CH,,4,,: 0.003 ppm -~||<#E0E0FF>  ||
||<#E0E0FF> Mar 2014||<#E0E0FF> [[attachment:fgga2014_03.png]] ||<#E0E0FF> [[attachment:fzj100m_2014_03.csv]] ||<#E0E0FF>~- CO,,2,,: +4.5/-2.5 ppm-~  ||<#E0E0FF>~- CO,,2,,: 0.5 ppm <<BR>> CH,,4,,: 0.003 ppm -~||<#E0E0FF>  ||
||<#E0E0FF> Feb 2014||<#E0E0FF> [[attachment:fgga2014_02.png]] ||<#E0E0FF> [[attachment:fzj100m_2014_02.csv]] ||<#E0E0FF>~- CO,,2,,: +/- 4.5 ppm-~||<#E0E0FF>~- CO,,2,,: 0.6 ppm <<BR>> CH,,4,,: 0.004 ppm -~||<#E0E0FF>  ||
~- The FGGA is compared to a CO,,2,, standard gas approximately every two weeks. There are currently no standards for CH,,4,, and H,,2,,O. However, because it is a direct spectroscopic method over entire absorption lines with known line characteristics, accuracy for all gases is expected to fall within 2 %. -~ <<BR>>
~- ^1^Accuracy is given here in terms of the maximum deviation between FGGA and the  CO,,2,, standard, combined with the 2.5 ppm uncertainty of the standard. -~ <<BR>>
~- ^2^Instrument presision is determined as the standard deviation determined during the standard measurements. -~ <<BR>>

Full specifications of the Fast Greenhouse Gas Analyzer are found [[http://www.lgrinc.com/analyzers/overview.php?prodid=23&type=gas|here]] (note that ours is the 2009 model, not the current one).

== 20 m Platform, Mid Infrared Cavity Enhanced Spectrometer (MICA) CO2, CO, H2O ==

Past data starting from February 2014 can be downloaded from the table below. Data are grouped in monthly files of 10-minute averages. <<BR>>
If you would like to get older data or data with higher time resolution, please contact [[mailto:m.von.hobe@fz-juelich.de|Marc von Hobe]].

||<#8080FF> '''Month'''||<#8080FF> '''Graph'''||<#8080FF> '''Data file'''||<#8080FF> '''Accuracy~-^1^-~'''||<#8080FF> '''Precision~-^2^-~'''||<#8080FF> '''Remarks'''||
||<#E0E0FF> Sep 2014||<#E0E0FF> [[attachment:ccia2014_09.png]] ||<#E0E0FF> [[attachment:fzj20m_2014_09.csv]] ||<#E0E0FF>~- CO,,2,,: +4.5/-7.5 ppm-~  ||<#E0E0FF>~- CO,,2,,: 0.3 ppm -~||<|6 #E0E0FF> ~- Due to the temporary absence of the MICA instrument (for a ship cruise in the Indian Ocean), CO,,2,, measurements from 2. April, 12:35 utc have been made by a [[http://www.lgrinc.com/analyzers/overview.php?prodid=14&type=isotope|Carbon Dioxide Isotope Analyzer]] (2009 model). -~ <<BR>><<BR>> ~- <<Color(red: Starting in mid-May, there have been problems with the internal pressure regulation. The resulting CO2 bias has been experimentally determined and data have been corrected, introducing an additional uncertainty of about 2 ppm, which has been added to the accuracy in this table. Because pressure changes are slow, precision is not affected. At cavity pressure below 22 hPa, the corrections function is not well understood, and data were discarded when the pressure dropped below this value.)>> -~||
||<#E0E0FF> Aug 2014||<#E0E0FF> [[attachment:ccia2014_08.png]] ||<#E0E0FF> [[attachment:fzj20m_2014_08.csv]] ||<#E0E0FF>~- CO,,2,,: +4.5/-7.5 ppm-~  ||<#E0E0FF>~- CO,,2,,: 0.3 ppm -~||
||<#E0E0FF> Jul 2014||<#E0E0FF> [[attachment:ccia2014_07.png]] ||<#E0E0FF> [[attachment:fzj20m_2014_07.csv]] ||<#E0E0FF>~- CO,,2,,: +4.5/-7.5 ppm-~  ||<#E0E0FF>~- CO,,2,,: 0.3 ppm -~||
||<#E0E0FF> Jun 2014||<#E0E0FF> [[attachment:ccia2014_06.png]] ||<#E0E0FF> [[attachment:fzj20m_2014_06.csv]] ||<#E0E0FF>~- CO,,2,,: +7.5/-4.5 ppm-~  ||<#E0E0FF>~- CO,,2,,: 0.3 ppm -~||
||<#E0E0FF> May 2014||<#E0E0FF> [[attachment:ccia2014_05.png]] ||<#E0E0FF> [[attachment:fzj20m_2014_05.csv]] ||<#E0E0FF>~- CO,,2,,: +4.5/-12.5 ppm-~ ||<#E0E0FF>~- CO,,2,,: 0.4 ppm -~||
||<#E0E0FF> Apr 2014||<#E0E0FF> [[attachment:ccia2014_04.png]] ||<#E0E0FF> [[attachment:fzj20m_2014_04.csv]] ||<#E0E0FF>~- CO,,2,,: +2.5/-6.5 ppm-~  ||<#E0E0FF>~- CO,,2,,: 0.4 ppm -~||
||<#E0E0FF> Mar 2014||<#E0E0FF> [[attachment:mica2014_03.png]] ||<#E0E0FF> [[attachment:fzj20m_2014_03.csv]] ||<#E0E0FF>~- CO,,2,,: +2.5/-2.5 ppm-~  ||<#E0E0FF>~- CO,,2,,: 0.4 ppm <<BR>> CO: 2.3 ppb -~||<#E0E0FF>  ||
||<#E0E0FF> Feb 2014||<#E0E0FF> [[attachment:mica2014_02.png]] ||<#E0E0FF> [[attachment:fzj20m_2014_02.csv]] ||<#E0E0FF>~- CO,,2,,: +3.5/-2.5 ppm-~||<#E0E0FF>~- CO,,2,,: 0.5 ppm <<BR>> CO: 2.3 ppb -~||<#E0E0FF>  ||
~- The instrument is compared to a CO,,2,, standard gas approximately every two weeks. There are currently no standards for CO and H,,2,,O. However, because it is a direct spectroscopic method over entire absorption lines with known line characteristics, accuracy for all gases is expected to fall within 2 %. -~ <<BR>>
~- ^1^Accuracy is given here in terms of the maximum deviation between MICA and the  CO,,2,, standard, combined with the 2.5 ppm uncertainty of the standard. -~ <<BR>>
~- ^2^Instrument presision is determined as the standard deviation determined during the standard measurements. -~ <<BR>>

== Meteorological data ==

An overview of the meteorological data measured at the FZJ tower is given at [[http://www.fz-juelich.de/gs/DE/UeberUns/Organisation/S-U/Meteorologie/wetter/wetterdaten_node.html]]. These data are also archived in 10-minute-averages and can be obtained from [[mailto:A.Knaps@fz-juelich.de|Dr. Axel Knaps]].

------
== Our Team ==
__Current operation and maintenance of ICOS instruments__: MarcVonHobe, CorinnaKloss, NicoleSpelten, AnneRichter (all IEK-7)

Special thanks to former IEK-7 student Stephanie Schrade, who carried out the original installations of the analyzers at the meteorological tower
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AMICA: Änderungen von "TowerObservations"