22/41

The  aerosol  optical  depth  is  detected  at  the  four  stations  Lindenberg,  Hohenpeissenberg,
Zingst  (a  GAW  regional  station),  and  Zugspitze/  Schneefernerhaus.
Other  aerosol  properties  are  additionally  measured  at  Schauinsland,  Neuglobsow,  Neumayer
and  Ny  Alesund/AWIPEV.  At  Lindenberg  only  the  optical  depth  is  measured  but  no  other
components.

Table  1c:  National  contributions  to  the  Atmospheric  Composition

ECVs  Contributing ­
  Networks
specified  in  the
GCOS  Implementation ­
  Plan

ECVs

Number  of
Stations  or
Platforms
currently
operating

Number  of
Stations  or
Platforms
operating  in
accordance
with  the
GCMPs

Number  of
Stations  or
Platforms
expected  to
be  operating ­
  in  2010

Number  of
Stations  or
Platforms
providing
data  to  the
International
Data  Centres

Number  of
Stations  or
Platforms  with
complete  historical ­
  record
available  in
International
Data  Centres

World  Meteorological ­
  Organization/ ­
  Global
Atmospheric
Watch
(WMO/GAW)
Global  Atmospheric ­
  CO 2  &
CH4  Monitoring
Network

Carbon  Dioxide ­

(C0 2 )

4

4

4

4

3

Methane
(CH 4 )

4

4

4

4

3

Other  greenhouse ­
  gases

3

3

3

3

2

WMO/GAW
ozone  sonde
network 3

Ozone

4

4

4

4

2

WMO/GAW
column  ozone
network 15

Ozone

4

2

4

4

2

WMO/GAW
Aerosol  Network ­
 0

Aerosol  optical ­
  depth

4

4

4

4

4

Other  Aerosol
Properties

7

7

7

7

7

a  Including  SHODOZ,  NDACC,  remote  sensing  and  ozone  sondes.
b  Including  filter,  Dobson  and  Brewer  stations.
c  Including  AERONET,  SKYNET,  BSRN  and  GAWPER.