The Optical Properties of Equatorial Cirrus from Observations in the ARM Pilot Radiation Observation Experiment

Platt, C. M. R.; Young, Stuart A.; Manson, P. J.; Patterson, G. R.; Marsden, S. C.; Austin, R. T.; Churnside, James H.

doi:10.1175/1520-0469(1998)055<1977:topoec>2.0.co;2

Cited by 82 publications

(64 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The liquid and ice water content products (2B-LWC, 2B-IWC, respectively) derive from algorithms predicated on exploiting the different properties of active (radar) and passive (MODIS) observing systems. The benefits of combining such data has been demonstrated for more than 20 years using measurements from both aircraft and ground-based lidar, radar, and radiometer systems (e.g., Piatt et al 1998;Matrosov et al 1992;Mace et al 1998;Wang and Sassen 2001;and many others). Specific details on the theoretical basis for the water and ice algorithms together with an evaluation of their performance are described in Austin and Stephens (2001), Austin et al (2002, manuscript …”

Section: The Cloudsat Radarmentioning

confidence: 99%

The Cloudsat Mission and the a-Train

Stephens

Vane

Boain

et al. 2002

Bull. Amer. Meteor. Soc.

1,876

958

View full text Add to dashboard Cite

Section: The Cloudsat Radarmentioning

confidence: 99%

The Cloudsat Mission and the a-Train

Stephens

Vane

Boain

et al. 2002

Bull. Amer. Meteor. Soc.

1,876

958

View full text Add to dashboard Cite

“…In these cases, water clouds are assigned lidar ratios of S water = 18 sr based on Mie calculations 13 . The lidar ratio for ice clouds is currently chosen using an empirically derived linear function of mid-cloud temperature developed by Platt 14,15 .…”

Section: Determining Cloud Ice-water Phase and Lidar Ratiomentioning

confidence: 99%

“…Among these, the most widely used are the Klett method 24 , the Fernald method 25 , and the so-called linear iterative method first introduced in the late 1960s by Elterman 26 and subsequently used extensively by Platt 14,27 . Klett and Fernald offer closed form, analytic solutions, while the linear iterative technique provides a strictly numerical solution.…”

Section: Computing Particulate Extinction and Backscatter Profilesmentioning

confidence: 99%

Fully automated analysis of space-based lidar data: an overview of the CALIPSO retrieval algorithms and data products

Vaughan

Young

Winker

et al. 2004

Laser Radar Techniques for Atmospheric Sensing

318

239

View full text Add to dashboard Cite

The Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations 1 (CALIPSO) satellite will be launched in April of 2005, and will make continuous measurements of the Earth's atmosphere for the following three years. Retrieving the spatial and optical properties of clouds and aerosols from the CALIPSO lidar backscatter data will be confronted by a number of difficulties that are not faced in the analysis of ground-based data. Among these are the very large distance from the target, the high speed at which the satellite traverses the ground track, and the ensuing low signal-to-noise ratios that result from the mass and power restrictions imposed on space-based platforms. In this work we describe an integrated analysis scheme that employs a nested, multi-grid averaging technique designed to optimize tradeoffs between spatial resolution and signal-to-noise ratio. We present an overview of the three fundamental retrieval algorithms (boundary location, feature classification, and optical properties analysis), and illustrate their interconnections using data product examples that include feature top and base altitudes, feature type (i.e., cloud or aerosol), and layer optical depths.

show abstract

“…High tropical cirrus were first reported by Uthe and Russell (1976) who observed cirrus clouds between 12 and 18 km, from the ground lidar station at Kwajalein (8.7 • N, 167.7 • E). Since then, a molteplicity of lidar studies characterized cirrus morphology, often in conjunction with other remote sensing instruments as infrared radiometers or millimeter radars (Platt et al, 1998;Comstock and Sassen, 2001;Wang et al, 2001;Pace et al, 2003;Immler et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

A comparison of light backscattering and particle size distribution measurements in tropical cirrus clouds

Cairo

Donfrancesco²,

Snels

et al. 2011

Atmos. Meas. Tech.

View full text Add to dashboard Cite

Abstract. An FSSP-100 Optical Particle Counter designed to count and size particles in the micron range and a backscattersonde that measures in-situ particle optical properties such as backscatter and depolarization ratio, are part of the payload of the high altitude research aircraft M55 Geophysica. This aircraft was deployed in tropical field campaigns in Bauru, Brasil (TROCCINOX, 2004) Darwin, Australia (SCOUT-Darwin, 2005) and Ouagadougou, Burkina Faso (SCOUT-AMMA, 2006). In those occasions, measurements of particle size distributions and optical properties within cirrus cloud were performed. Scope of the present work is to assess and discuss the consistency between the particle volume backscatter coefficient observed by the backscattersonde and the same parameter retrieved by optical scattering theory applied to particle size distributions as measured by the FSSP-100. In addition, empirical relationships linking the optical properties measured in-situ by the backscattersonde, which generally can be obtained by remote sensing techniques (LIDAR), and microphysical bulk properties like total particle number, surface and volume density will be presented and discussed.

show abstract

The Optical Properties of Equatorial Cirrus from Observations in the ARM Pilot Radiation Observation Experiment

Cited by 82 publications

References 39 publications

The Cloudsat Mission and the a-Train

The Cloudsat Mission and the a-Train

Fully automated analysis of space-based lidar data: an overview of the CALIPSO retrieval algorithms and data products

A comparison of light backscattering and particle size distribution measurements in tropical cirrus clouds

Contact Info

Product

Resources

About