Lidar observation of time and spatial variations of backscattering coefficient near the stratiform cloud base

Kolev, Ivan; Parvanov, O.; Kaprielov, B.; Kolev, Staytcho

doi:10.1016/0169-8095(89)90033-1

Cited by 2 publications

(3 citation statements)

References 10 publications

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“…The smaller particles, if less than 10^m in size, would give a smaller backscatter at 10.6 microns which could give an apparently lower cloud top. Figure 5 shows the cloud-base distribution with altitude measured by Kolev et al (1993) in their ECLIPS (Phase II) experiment, given as the numbers of occurrences between various height ranges. Two cloud groups are noted, one at 700 to 1200 m and another at 2000 to 2600 m. These two groups are related to the thermodynamics of the atmospheric boundary layer and to the formation of fair-weather cumulus at the higher altitudes.…”

Section: Retrieval Of Cloud Base a Definition Of Cloud Basementioning

confidence: 99%

“…5. Frequency histograms of the number of cases of retrieved cloud base at different altitudes for stratocumulus and cumulus clouds (Kolev et al 1993).…”

Section: Retrieval Of Extinction Coefficientmentioning

confidence: 99%

“…Lindberg et al demonstrated that lidar values of crgive qualitative agreement with in situ measurements, at least for very turbid clouds. Kolev et al (1989) also examined stratocumulus backscatter coefficients. A simulation of a Klett retrieval, using a model stratocumulus, is illustrated in Fig.…”

Section: Stratocumulus Cloudsmentioning

confidence: 99%

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The Experimental Cloud Lidar Pilot Study (ECLIPS) for Cloud—Radiation Research

Platt¹,

Young²,

Carswell³

et al. 1994

Bull. Amer. Meteor. Soc.

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The Experimental Cloud Lidar Pilot Study (ECLIPS) was initiated to obtain statistics on cloud-base height, extinction, optical depth, cloud brokenness, and surface fluxes. Two observational phases have taken place, in October-December 1989 and April-July 1991, with intensive 30-day periods being selected within the two time intervals. Data are being archived at NASA Langley Research Center and, once there, are readily available to the international scientific community. This article describes the scale of the study in terms of its international involvement and in the range of data being recorded. Lidar observations of cloud height and backscatter coefficient have been taken from a number of ground-based stations spread around the globe. Solar shortwave and infrared longwave fluxes and infra-red beam radiance have been measured at the surface wherever possible. The observations have been tailored to occur around the overpass times of the NOAA weather satellites. This article describes in some detail the various retrieval methods used to obtain results on cloud-base height, extinction coefficient, and infrared emittance, paying particular attention to the uncertainties involved. The above methods are then illustrated by both model simulations and by selected results from various laboratories. The ECLIPS data are shown to represent a valuable resource for cloud parameter-izations in models and for model validations.

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Section: Retrieval Of Cloud Base a Definition Of Cloud Basementioning

confidence: 99%

“…5. Frequency histograms of the number of cases of retrieved cloud base at different altitudes for stratocumulus and cumulus clouds (Kolev et al 1993).…”

Section: Retrieval Of Extinction Coefficientmentioning

confidence: 99%

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The Experimental Cloud Lidar Pilot Study (ECLIPS) for Cloud—Radiation Research

Platt¹,

Young²,

Carswell³

et al. 1994

Bull. Amer. Meteor. Soc.

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Lidar Cloud Observaion: In Part of Eclips Phase II in the Region of Sofia

Kolev

Parvanov

Kaprielov

et al. 1993

Optical Remote Sensing of the Atmosphere

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The ECLIPS project in which our lidar group also takes part is well described [1]. In general, the main purpose is a ground-based lidar observation of the clouds simultaneously with the NOAA 10 and NOAA 11 meteorological satellites overpassing the same areas to be performed. Essential data are the recorded profiles of the lidar returns from which certain information about the clouds height, optical depth and vertical extinction can be derived.

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Lidar observation of time and spatial variations of backscattering coefficient near the stratiform cloud base

Cited by 2 publications

References 10 publications

The Experimental Cloud Lidar Pilot Study (ECLIPS) for Cloud—Radiation Research

The Experimental Cloud Lidar Pilot Study (ECLIPS) for Cloud—Radiation Research

Lidar Cloud Observaion: In Part of Eclips Phase II in the Region of Sofia

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