ARCTIC  NRT  SERVICE  2002/2003

 

  Mirror sites at Uni-Heidelberg , Uni-Bremen and DLR Oberpfaffenhofen  
H o m e O v e r v i e w                  A r c h i v e

L i n k s

The Arctic near real time (NRT) Service 2002/2003 is a joint collaboration between the Institutes of Environmental Physics (IUP) at the Universities of Bremen and Heidelberg, the German Aerospace Center (DLR/DFD and DLR/IAP). It is a continuation of previous GOME NRT data services since the winter 1998/1999  (see http://www.nilu.no/projects/nadir/godiva/godiva.html and http://www.iup.uni-bremen.de/gome/) including stratospheric meteorological data (PV and temperature).

The main goal of the Arctic NRT Service is to provide a quick and comprehensive overview on important meteorological and chemical quantities which allow to characterise the state of stratospheric chlorine activation. In particular it is aimed to support coordination of field campaigns for measuring stratospheric trace constituents and to inform the public on the actual state of the atmosphere with regard to ozone depletion.

Find here a more detailed description of the GOME maps of NO2 and OClO.

Please note that:

Since the GOME maps and trace gas data are produced in near real time, the results of the NRT data analysis is considered preliminary. The NRT level 1 data products (radiance and solar irradiance) are generated by the GOME data processor (GDP) located at ESA's Kiruna ground station, which is one of four ESA stations receiving global data from the ERS-2 (European Remote Sensing satellite) carrying GOME. In December 2001 and January 2002 additional GDPs were installed at Gatineau and Maspalomas, respectively. The GDP was developed and is operated by DLR/IMF in Oberpfaffenhofen; the internet connection between Kiruna GS and NILU for the level-1 data transmission is kindly provided by the Swedish Space Corporation.

In the normal operational data flow all GOME transmissions (raw data) are collected on tape at each ground station and the tapes are mailed to DLR Oberpfaffenhofen. Level 1 data for further processing become typically available after one to several weeks depending on the location of the stations. The NRT data service represents an enormous speed-up of data dissemination.