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  AIR MONITORING                                                                                                   
  NETWORKS FOR                                                                                                     
  CLIMATE FORCING,                                                                                                 
  TRANSPORT, AND                                                                                                   
  STRATOPHERIC                                                                                                     
  OZONE                                                                                                            

  **Network**              **Lead Federal **Number of     **Initiated**   **Measurement Parameters**               **Location of Information and/or Data**
                           Agency**       Sites**                                                                  

  **Global                                                                                                         
  Monitoring                                                                                                       
  Division Baseline                                                                                                
  Observatories**                                                                                                  

  Manua Loa                NOAA           1               1957            CO2, CO, CH4, SO2, O3, SF6, N2O, H2,     <http://www.cmdl.noaa.gov/obop/MLO/>
                                                                          CFCs, HCFCs, HFC\'s, Aerosols, Solar     
                                                                          Radiation, Surface Meteorology           

  Point Barrow             NOAA           1               1973            CO2, CO, CH4, SO2, O3, SF6, N2O, H2,     <http://www.cmdl.noaa.gov/obop/BRW/>
                                                                          CFCs, HCFCs, HFC\'s, Aerosols, Solar     
                                                                          Radiation, Surface Meteorology           

  Samoa                    NOAA           1               1974            CO2, CO, CH4, SO2, O3, SF6, N2O, H2,     <http://www.cmdl.noaa.gov/obop/smo/>
                                                                          CFCs, HCFCs, HFC\'s, Aerosols, Solar     
                                                                          Radiation, Surface Meteorology           

  South Pole               NOAA           1               1957            CO2, CO, CH4, SO2, O3, SF6, N2O, H2,     <http://www.cmdl.noaa.gov/obop/SPO/>
                                                                          CFCs, HCFCs, HFC\'s, Aerosols, Solar     
                                                                          Radiation, Surface Meteorology           

  Trinidad Head            NOAA           1               2002            CO2, CO, CH4, SO2, O3, SF6, N2O, H2,     <http://www.cmdl.noaa.gov/obop/THD/>
                                                                          CFCs, HCFCs, HFC\'s, Aerosols, Solar     
                                                                          Radiation, Surface Meteorology           

  **Global                                                                                                         
  Monitoring                                                                                                       
  Division \--                                                                                                     
  Carbon Cycle                                                                                                     
  Greenhouse Gases                                                                                                 
  Group (CCGG)**                                                                                                   

  Observatory              NOAA           4               1957            See above baseline observatories         <http://www.cmdl.noaa.gov/ccgg/insitu.html>
  Measurements                                                                                                     

  Cooperative fixed        NOAA           62              1967            [CO2, CH4, CO, H2, N2O, and SF6, stable  <http://www.cmdl.noaa.gov/ccgg/flask.html>
  sites                                                                   isotopes of CO2 and                      
                                                                          CH4](http://instaar.colorado.edu/sil/)   

  Comercial Ships          ?????          ?????           ?????                                                    

  **Others**                                                                                                       

  Tall Tower               NOAA           3               1992            CO2, CO, CH4, H2, CFCs, methyl           <http://www.cmdl.noaa.gov/ccgg/towers.html>
  Measurements                                                            chloroform, carbon tetrachloride,        
                                                                          chloroform, sulfur hexafluoride,         
                                                                          perchloroethylene                        

  Aircraft                 NOAA           16 airport      1992            CO2, CH4, N2O, CO, H2, SF6               <http://www.cmdl.noaa.gov/ccgg/aircraft.html>
  Measurements                            sites                                                                    

  Networks for             NOAA           Multiple        1986            nitrous oxide (N2O), CFCs, HCFCs, HFCs,  <http://www.cmdl.noaa.gov/hats/>
  Halogenated Gases                       platforms                       CH3Br, CH3Cl, CH3I), halons              
  and Ozone                                                                                                        

  Network for              NOAA           Multiple        mid-1970s       light absorption, total scattering and   <http://www.cmdl.noaa.gov/aero/>
  Aerosols                                platforms                       backscattering                           

  North American           NOAA           10 Aircraft 3   1992            CO, CO2, CH4                             [http://www.cmdl.noaa.gov/carbonamerica/]{.underline}
  Aircraft and Tall                       tall towers                                                              
  Tower Carbon                                                                                                     
  Observing System                                                                                                 

  North American           Multiple       Multiple        2001            CO, CO2, CH4                             <http://www.nacarbon.org/nacp/>
  Carbon Program           participants   platforms                                                                
  Atmospheric                                                                                                      
  Observing System                                                                                                 

  Aeronet                  NASA           14 network      1998            aerosol spectral optical depths, aerosol <http://aeronet.gsfc.nasa.gov/index.html>
                                          participants                    size distributions, and precipitable     
                                                                          water                                    

  **University of                                                                                                  
  Washington**                                                                                                     

  Cheeka Peak       None                  1               1997            O3, CO, Aerosols, Solar Radiation,       <http://research.uwb.edu/jaffegroup/modules/cpo_plot/>
  Observatory                                                             Surface Meteorology                      

  Mt. Bachelor      None                  1               2004            O3, CO, NO/NO2, Aerosols, Hg, Surface    <http://research.uwb.edu/jaffegroup/modules/mbo_plot/>
  Observatory                                                             Meteorology                              

  **AIR MONITORING                                                                                                 
  NETWORKS FOR                                                                                                     
  CLIMATE FORCING,                                                                                                 
  TRANSPORT, AND                                                                                                   
  STRATOPHERIC                                                                                                     
  OZONE**                                                                                                          
  (continued)                                                                                                      

  **International                                                                                                  
  Aircraft                                                                                                         
  Measurements**                                                                                                   

  MOZAIC            None                  2500 Airbus     1994            O3, H2O, CO, NOx                         <http://www.fz-juelich.de/icg/icg-ii/mozaic/home>
  (Measurement of                         international                                                            
  ozone, water                            flights/year                                                             
  vapour, carbon                                                                                                   
  monoxide and                                                                                                     
  nitrogen oxides                                                                                                  
  aboard Airbus                                                                                                    
  in-service                                                                                                       
  aircraft)                                                                                                        

  NOXAR             None                  500 Swiss Air   1995 - 1996     O3, NO, NO2                              <http://www.iac.ethz.ch/en/research/chemie/tpeter/Noxar.html>
  (Measurements of                        flights to U.S.                                                          
  Nitrogen Oxides                         and far east                                                             
  and Ozone Along                                                                                                  
  Air Routes)                                                                                                      

  CARIBIC (Civil    None                  \~100 Lufthansa 1997            CO, O3,CO, CH4, CO2, N2O, SF6, NMHC,     <http://www.caribic-atmospheric.com/>
  Aircraft for the                        flights                         Position & Meteorology and Cloud cover.  
  Regulary                                                                                                         
  Investigation of                                                                                                 
  the atmosphere                                                                                                   
  Based on an                                                                                                      
  Instrument                                                                                                       
  Container)                                                                                                       

  AMATRAS           None                  262 flights     1993            CO2, CH4, CO and SF6                     <http://www.jal.com/en/press/0000336/img/AMATRAS.pdf>
  (Atmospheric                            between Japan                                                            
  Measurement by                          and Australia                                                            
  Airliners for                                                                                                    
  Trace Species)                                                                                                   
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