Satellite instrument provides nighttime sensing capability

Suomi satellite brings to light a unique frontier of nighttime environmental sensing capabilities.

Most environmental satellite radiometers use solar reflectance information when it is available during the day but must resort at night to emission signals from infrared bands, which offer poor sensitivity to low-level clouds and surface features. A few sensors can take advantage of moonlight, but the inconsistent availability of the lunar source limits measurement utility. Here we show that th...

Dynamic IT Capability: An Instrument Development Study

The purpose of this study is to develop and validate an instrument to measure organizational IT. We adopted the resource-based view (RBV) of the firm and the dynamic capabilities theory to propose the Dynamic IT Capability (DITC) instrument. Dynamic IT Capability is defined as the ability to integrate, build, and reconfigure IT-based resources and competencies to adjust to rapidly-changing envi...

Aerosol Satellite Remote Sensing Aerosol Satellite Remote Sensing

A new aerosol retrieval algorithm is presented which computes the spectral opti-cal depth over the ocean from spaceborne radiometers. It includes both multiplescattering and the bi-directional re ectance of the ocean surface. The algorithmis applied to data from the Along Track Scanning Radiometer 2 (ATSR-2).This radiometer aboard the ERS-2 satellite has 4 bands in the visible a...

Automated Lightning Flash Detection in Nighttime Visible Satellite Data

The Defense Meteorological Satellite Program (DMSP) Operational Linescan System (OLS) nighttime visible channel was designed to detect earth–atmosphere features under conditions of low illumination (e.g., near the solar terminator or via moonlight reflection). However, this sensor also detects visible light emissions from various terrestrial sources (both natural and anthropogenic), including l...

Satellite Remote Sensing