[1] The surface fluxes in the wavelength range 280 -2800 nm were measured during the pre-monsoon period, AprilJune 2003 along with the spectral distribution of aerosol optical depth (AOD) in the visible and near infrared wavelengths. The Å ngström exponent alpha retrieved from the data showed abundance of desert aerosols over Delhi during this period. The aerosol composition constructed using the OPAC model indicated a typical mixture of two aerosol types: urban and desert. Due to this the aerosol mixture had a very low value of single scattering albedo $0.67. The average total radiative forcing efficiency observed at the surface in the broad wavelength band (280 -2800 nm) was estimated and compared with the SBDART model calculated values. Citation: Singh, S., S. Nath, R. Kohli, and R. Singh (2005), Aerosols over Delhi during pre-monsoon months: Characteristics and effects on surface radiation forcing, Geophys. Res. Lett., 32, L13808,

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The effect of deposition temperature (Tdep) and subsequent annealing time (tanl) of atomic layer deposited aluminum oxide (Al2O3) films on silicon surface passivation (in terms of surface recombination velocity, SRV) is investigated. The pristine samples (as-deposited) show presence of positive fixed charges, QF. The interface defect density (Dit) decreases with increase in Tdep which further decreases with tanl up to 100s. An effective surface passivation (SRV<8 cm/s) is realized for Tdep ≥ 200 °C. The present investigation suggests that low thermal budget processing provides the same quality of passivation as realized by high thermal budget process (tanl between 10 to 30 min).