Patrick J. Sheridan

TL;DR: The Indian Ocean Experiment (INDOEX) documented this Indo-Asian haze at scales ranging from individual particles to its contribution to the regional climate forcing as discussed by the authors, and integrated the multiplatform observations (satellites, aircraft, ships, surface stations, and balloons) with one-and four-dimensional models to derive the regional aerosol forcing resulting from the direct, the semidirect and the two indirect effects.

TL;DR: In this paper, a model-based calibration scheme for the 7-wavelength aethalometer was developed to evaluate the filter loading effect caused by aerosol light absorption, and the model is tested against ambient measurements and is found to require coefficients that are situation specific.

TL;DR: A filter-based single-wavelength photometer (Particle Soot Absorption Photometer, PSAP) for measuring light absorption by aerosols was modified to measure at three wavelengths, 467 nm, 530 nm and 660 nm.

TL;DR: In this article, a multiangle absorption photometer (MAAP) was introduced for the measurement of aerosol light absorption, which builds on the simultaneous measurement of radiation transmitted through and scattered back from a particle-loaded fiber filter at multiple detection angles.

TL;DR: In this paper, the authors compared the performance of different types of absorption photometers for real-time analysis of aerosol particles. But, the results showed that the current corrections of a cross sensitivity to particle scattering are not sufficient and the remaining cross sensitivities were a function of the total particle load on the filter.