1. National Institute for Space Research; São José dos Campos Brazil
2. Department of Civil and Environmental Engineering; Massachusetts Institute of Technology; Cambridge Massachusetts USA
3. Earth Networks; Germantown Maryland USA
4. Earth System Science Center; University of Alabama in Huntsville; Huntsville Alabama USA
5. Instituto de Astronomia, Geofísica e Ciências Atmosféricas; Universidade de São Paulo; São Paulo Brazil
6. NASA Marshall Space Flight Center; Huntsville Alabama USA