The Energy Cycle Associated to the Pacific Walker Circulation and Its Relationship to ENSO
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Effects of Sky Conditions Measured by the Clearness Index on the Estimation of Solar Radiation Using a Digital Elevation Model
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Hans A. Panofsky’s Integral Similarity Function—At Fifty
Gerhard Kramm, Dillon J. Amaya, Thomas Foken, Nicole Mölders

Solar Activity, Solar Wind and Geomagnetic Signatures
Jean-Louis Zerbo, Frédéric Ouattara, Christine Amory Mazaudier, Jean-Pierre Legrand, John D. Richardson

Rainfall Infiltration Return Frequency Estimates
T. V. Hromadka II, M. Phillips, P. Rao, B. Espinosa, T. Hromadka III