The files contain the first version of the integrated water vapor (IWV) estimates obtained 
by use GPS (Global Positioning System) data collected during GPM-CHUVA experiment.   
  
There is a directory for each GPS stations belonging to campaign.   
These directories and files are denominated with 4 letters to indicate the station name.   
  
The names, coordinates and periods available of each GPS station are:   
  
BSMG: GPM-CHUVA-BELEM São Miguel do Guamá-PA 
      Latitude:            -1.623761156
      Longitude:           -47.47907453
      Geometric Altitude:   10.974 m
      Begin: 151 (31/05/2011) 21:00
      End:   185 (04/07/2011) 23:55
      Meteorological station used: Station Vaisala F2910032

BTLG: GPM-CHUVA-BELEM Telégrafo-PA
      Latitude:            -1.4272226
      Longitude:           -48.48833086
      Geometric Altitude:   6.275 m
      Begin: 145 (25/05/2011) 15:30
      End:   185 (04/07/2011) 23:55
      Meteorological station used: Station Vaisala F2910020


BSPC: GPM-CHUVA-BELEM Santa Isabel do Pará-PA
      Latitude:            -1.352908067        
      Longitude:           -48.13260799
      Geometric Altitude:    8.251 m 
      Begin: 142 (22/05/2011)  00:00
      End:   183 (02/07/2011)  12:55
      Meteorological station used: Station Vaisala F2910026


BSSG: GPM-CHUVA-BELEM Vigia-PA
      Latitude:            -0.903715594
      Longitude:           -48.10081335 
      Geometric Altitude:    14 m
      Begin: 142 (22/05/2011)  16:20 
      End:   183 (02/07/2011)  16:55
      Meteorological station used: Station Vaisala F2910014

BABT: GPM-CHUVA-BELEM Abaetetuba-PA
      Latitude:            -1.694123397
      Longitude:           -48.79757961
      Geometric Altitude:    11.5 m
      Begin: 143 (23/05/2011) 23:15
      End:   187 (06/07/2011) 15:55 
      Meteorological station used: Station Vaisala F2910017              

BVCB: GPM-CHUVA-BELEM Vila dos Cabanos-PA 
      Latitude:            -1.51919505 
      Longitude:           -48.68473347
      Geometric Altitude:   0.252 m
      Begin: 145 (25/05/2011) 00:00
      End:   163 (12/06/2011) 17:45
      Meteorological station used: Station Vaisala F2910005                      

BJRN: GPM-CHUVA-BELEM Jurunas-PA
      Latitude:            -1.470286759  
      Longitude:           -48.49075854  
      Geometric Altitude:    3 m
      Begin: 144 (24/05/2011) 23:00
      End:   185 (04/07/2011) 18:55   
      Meteorological station used: Station Vaisala F2910015                   

BMGR: GPM-CHUVA-BELEM Mangeirão-PA
      Latitude:            -1.376038431
      Longitude:           -48.43791428
      Geometric Altitude:   3.270 m
      Begin: 145 (25/05/2011) 22:05
      End:   183 (02/07/2011) 19:55
      Meteorological station used: Station Vaisala F2910011                
 
BAGB: GPM-CHUVA-BELEM Águas Brancas-PA
      Latitude:            -1.388224036
      Longitude:           -48.37170737
      Geometric Altitude:   5.092 m
      Begin: 146 (26/05/2011) 14:55
      End:   185 (04/07/2011) 23:55
      Meteorological station used: Station Vaisala F2910018               

UFPA: GPM-CHUVA-BELEM Guamá-UFPA-PA
      Latitude:            -1.474897284 
      Longitude:           -48.45784567 
      Geometric Altitude:     2.145 m
      Begin: 168 (17/06/2011)   20:30
      End:   185 (04/07/2011)   17:10
      Meteorological station used: Automatic Station Model Davis          

BMSQ: GPM-CHUVA-BELEM Mosqueiro-PA
      Latitude:            -1.126213839 
      Longitude:           -48.43290173
      Geometric Altitude:    8.749 m
      Begin: 148 (28/05/2011)  19:20
      End:   182 (01/07/2011)  16:55
      Meteorological station used: Station Vaisala F2910010           

BSOR: GPM-CHUVA-BELEM Soure-PA
      Latitude:            -0.725351984
      Longitude:           -48.51656749
      Geometric Altitude:   10.292 m
      Begin: 149 (29/05/2011)  16:25 
      End:   190 (09/07/2011)  10:55
      Meteorological station used:  Station Vaisala F2910003     

BSPM: GPM-CHUVA-BELEM SIPAM-PA
      Latitude:            -1.408834592 
      Longitude:           -48.46251348
      Geometric Altitude:    6.368 m
      Begin: 168 (17/06/2011)  13:10
      End:   188 (07/07/2011)  13:55
      Meteorological station used: Automatic Station Model Davis                  

BEMA: GPM-CHUVA-BELEM DTCEA-EMA-PA
      Latitude:            -1.389082594 
      Longitude:           -48.48255997 
      Geometric Altitude:   9.832 m
      Begin: 168 (17/06/2011) 19:45
      End:   188 (07/07/2011) 12:15
      Meteorological station used: Automatic Station Model Davis                

BBNV: GPM-CHUVA-BELEM Benevides-PA
      Latitude:            -1.307336028
      Longitude:           -48.28572706 
      Geometric Altitude:   13.631 m
      Begin: 160 (09/06/2011)  14:55
      End:   181 (30/06/2011)  13:40 
      Meteorological station used: Automatic Station Model Davis               


The data are presented in the following columns:   
  
 1. Date (YYYMMDDHHMI) (GMT)  
 2. Simple second Julian of the year - (GMT)   
 3. Integrated Water Vapor (IWV) - [kg/m²]   
  
PS. Simple Second Julian is equal to number of second of the year in the required date.
For instance a measurement done at 15:30:18 GMT at Marc 2nd, 2010 has Simple Second 
Julian equal to 5239818.  
  
Supplementary information about this version, contact:   
- Luiz Fernando Sapucci (luiz.sapucci@cptec.inpe.br);