On average 1–2 tropical cyclones form over the Arabian Sea each year, and few of these storms are intense enough to be classified as very severe or super cyclonic storms. As such, few studies have explicitly identified the seasonal to interannual changes in environmental conditions that are associated with Arabian Sea tropical cyclogenesis. However, over the last 30 yr several intense Arabian s...

A QuikSCAT climatology of tropical cyclone size. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. [1] QuikSCAT data of near‐surface wind vectors for the years 1999–...

NO2 climatology in the northern subtropical region: diurnal, seasonal and interannual variability M. Gil, M. Yela, L. N. Gunn, A. Richter, I. Alonso, M. P. Chipperfield, E. Cuevas, J. Iglesias, M. Navarro, O. Puentedura, and S. Rodrı́guez Area de Investigación e Instrumentación Atmosférica, INTA, Torrejón de Ardoz, Spain Inst. for Atmospheric Science, School of Earth and Environment, Univ. of Le...

This paper asks whether oneto five-year predictions of United States hurricane landfalls and damages improve upon a baseline expectation derived from the climatological record. The paper argues that the large diversity of available predictions means that some predictions will improve upon climatology, but for decades if not longer it will be impossible to know whether these improvements were du...

The Hayman forest fire occurred near Denver, burning ~138,000 acres during 8 June-2 July 2002. It produced aerosol that filled the troposphere over Colorado, allowing an investigation of the effects of increased aerosol concentration on cloud-to-ground (CG) lightning polarity. Specifically, we examine whether positive CG (+CG) flashes are favored in smoky environments. Aerosol optical depth (AO...

Meteorological forecasts of incident solar radiation are valuable for solar resource owners and others. Most previously described forecast methods provide a single predicted value. However, a well-calibrated forecast probability distribution is more useful in that it could be used to make optimum decisions under any decision rule. We demonstrate methods of constructing and evaluating probabilis...

Most Earth observation hyperspectral imagery (HSI) detection and identification algorithms depend critically upon a robust atmospheric compensation capability to correct for the effects of the atmosphere on the radiance signal. Most atmospheric compensation methods perform optimally when ancillary ground truth data are available, e.g., high fidelity in situ radiometric observations or atmospher...