The NASA African Monsoon Multidisciplinary Analyses (NAMMA) campaign was conducted primarily to explore the relationship between African Easterly Waves (AEWs) and tropical cyclogenesis in the Atlantic basin, as well as the role of the Saharan Air Layer (SAL) in modulating the intensity of the waves and tropical cyclone growth.
The CSU Radar Meteorology Group, in cooperation with NASA Wallops Flight Facility, was responsible for the deployment of the TOGA radar during NAMMA. The TOGA radar was located near Praia, Sao Taigo in the Republic of Cape Verde. The radar collected data nearly continuously from 15 August - 16 September 2006.
TOGA was deployed primarily to:
Russell, B., E. R. Williams, M. Gosset, F. Cazenave, L. Descroix, N. Guy, T. Lebel, A. Ali, F. Metayer, and G. Quantin, 2010: Radar/rain-gauge comparisons on squall lines in Niamey, Niger for the AMMA. Q. J. R.. Meteor. Soc., 136(s1), 289-303, doi:10.1002/qj.548. [PDF]
Nieto-Ferreira, R., T. Rickenbach, N. Guy, and E. Williams, 2009: Radar observations of convective system variability and the interaction with African easterly waves during the 2006 AMMA IOP. Mon. Wea. Rev., 137, 4136-4150. doi: 10.1175/2009MWR2740.1 [PDF]
Rickenbach, T., R. Nieto Ferreira, N. Guy, and E. Williams, 2009: Radar-observed squall line propagation and the diurnal cycle of convection in Niamey, Niger, during the 2006 African Monsoon and Multidisciplinary Analyses Intensive Observing Period, J. Geophys. Res., 114, D03107, doi:10.1029/2008JD010871. [PDF]
Cifelli, R., T. J. Lang, S. A. Rutledge, B. F. Smull, and E. J. Zipser, 2007: Radar observations of convection in a large-scale disturbance during NAMMA. Preprint Volume, 33rd International Radar Meteorology Conference, American Meteorological Society, 6 - 10 August, 2007, Cairns, Australia. [PDF]
Cifelli R., T. J. Lang, and S. A. Rutledge, 2008: Characteristics of Convection in an African Easterly Wave Observed During NAMMA. PPM Science Team Meeting, Ft. Collins, CO, 4-7 August 2008. [PPT]
Tropical Rainfall Regimes: Issues for TRMM PR Rainfall Estimation Presented by Prof. Steven Rutledge on 28 October 2009, NASA PMM Science Team meeting, Salt Lake City, UT