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An algorithm based on the physics of radiative transfer in vegetation canopies for the retrieval of vegetation green leaf area index (LAI) and fraction of absorbed photosynthetically active radiation (FPAR) from surface reflectances was developed and implemented for operational processing prior to the launch of the moderate resolution imaging(More)
An updated version of the nested-grid GEOS-Chem model is developed allowing for higher horizontal (0.5 • ×0.667 •) resolution as compared to global models. CO transport over a heavily polluted region, the Beijing-Tianjin-Hebei (BTH) city cluster in China, and the pattern of outflow from East China in summertime are investigated. Comparison of the(More)
A series of aggressive measures was launched by the Chinese government to reduce pollutant emissions from Beijing and surrounding areas during the Olympic Games. Observations at Miyun, a rural site 100 km downwind of the Beijing urban center, show significant decreases in concentrations of O 3 , CO, NO y , and SO 2 during August 2008, relative to August(More)
With the increasing use of mobile computing devices such as Personal Digital Assistants (PDA), and an expansion of Wireless Local Area Networks (WLAN), there is growing interest in an indoor Wireless Positioning Systems (WPS) based on WLAN infrastructure. This paper describes a WPS that uses the signal strength of WLAN transmissions from/to WLAN Access(More)
[1] Papers published in this special section report findings from the East Asian Study of Tropospheric Aerosols: An International Regional Experiment (EAST-AIRE). They are concerned with (1) the temporal and spatial distributions of aerosol loading and precursor gases, (2) aerosol single scattering albedo (SSA), (3) aerosol direct radiative effects, (4)(More)
Over the last few decades, structural control technologies have attracted great interest from the earthquake engineering community as a means of reducing dynamic structural responses. Traditional structural control systems employ large quantities of cables to connect structural sensors, controllers, and actuators into one system. To reduce the high-cost and(More)
Spectral clustering (SC) is a large family of grouping methods that partition data using eigenvectors of an affinity matrix derived from the data. Though SC methods have been successfully applied to a large number of challenging clustering scenarios, it is noteworthy that they will fail when there are significant intersections among different clusters. In(More)
Saturated tabletop lasers operating at 5 Hz repetition rate with average powers Ͼ1 ␮W were demonstrated at wavelengths between 16.5 and 13.9 nm in the 4d 1 S 0 –4p 1 P 1 transitions of Ni-like ions. The results were obtained using picosecond laser heating pulses with an energy of only 1 J by optimizing the angle of incidence for maximum energy deposition.(More)
Atmospheric Chemistry and Physics Discussions This discussion paper is/has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP if available. Abstract We use aircraft observations of carbon monoxide (CO) from the NASA ARCTAS and NOAA ARCPAC campaigns in April 2008 together with(More)