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Near-Real-Time Products from ERS-2 GOME

PLEASE NOTE: This service is limited due to the failure of the tape recorder aboard ERS-2. Latest news on the instrument can be found here.

The following near-real-time products from the Global Ozone Monitoring Experiment aboard ESAs ERS-2 are computed operationally at DLR within the N-GONG project (Near-real-time Global Ozone Network from GOME). Maps of ozone and NO2 observations, clouds and radiances are available three hours after ERS-2 overpass.

Due to the failure of the tape recorder of ERS-2 on June 22, 2003 the data coverage of GOME is limited to the north hemispheric receiving stations of ESA. Therefore, data assimilation of the GOME observations has been discontinued.

From October to December 2003 and from January to March 2004 additional orbits are available for the southern hemisphere. On behalf of ESA the Antarctic Receiving Station of DLR in O'Higgins was operated to gain information on the ozone hole. The Matera Ground Station (MA), Italy, has started acquiring ERS-LBR data as from March 1, 2004.

Click the images to enter the product pages!

Ozone Columns - still available in NRT
Global, Northern and Southern Hemisphere
Global 3D Ozone Analysis (Level 4)	Ozone Profiles (Level 2)
Derived by data assimilation / Service discontinued	Derived by a Neural Network approach (NNORSY)
Nitrogen Dioxide- still available in NRT	Clouds - still available in NRT
Vertical Column Densitites	OCRA Cloud Coverage
Radiances
Level 1 Data

The N-GONG Project

The near-real-time Global Ozone Network from GOME (N-GONG) is a national financed joint collaboration between the German Aerospace Center (DLR/IMF and DLR/DFD) and the Institute of Environmental Physics (IUP) at the University of Bremen in cooperation with the European Space Agency (ESA).

The N-GONG project provides an extreme cost effective near-real-time service utilizing all the information within the GOME data. The GOME near-real-time service was initiated in January 1997 with the installation of GDP at the Kiruna station (10 out of 14 daily orbits) and completed in February 2002 with the GDP installation at the Maspalomas station.

Special thanks to the ERS-2 receiving stations: Kiruna operated by SSC; Gatineau operated by NRCan; and Maspalomas operated by INTA.

Related Links

• The GOME Product Survey describes the GOME Products available from DLR
• The method for accessing the GOME products can be found here
• GOME NRT Products are have been used in the EU QUILT campaign
• Additional GOME-NRT images and information on the QUILT campaign can be found at IUP
• The Institute of Environmental Physics at the University of Heidelberg contributes to the GOME NRT service producing OClO maps
• Other GOME fast delivery products can be found at KNMI.

Contact

For further information please contact the GOME Team at DLR.