The use of passive microwave imagery in rainfall monitoring

Kidd, Chris; Barrett, EC

doi:10.1080/02757259009532112

Cited by 23 publications

(7 citation statements)

References 17 publications

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“…General overviews of techniques utilizing passive microwave radiometry are presented by Kidd and Barrett (1990) and Barrett and Beaumont (1994), whilst land-specific techniques are outlined by Petty (1995b) and Petty and Krajewski (1996). Due to the radiative characteristics of the land and ocean, techniques often employ more than one principle with more than one physical basis to extract the rainfall information.…”

Section: Physical Backgroundmentioning

confidence: 99%

Satellite rainfall climatology: a review

Kidd

2001

Intl Journal of Climatology

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173

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The monitoring of the world's climate using conventional means is well established, incorporating numerous historical data sets to ensure a long-term record. Parameters such as temperature have been quite accurately recorded over the last 200 years or so, but other parameters such as rainfall are less well recorded. This paper introduces satellite rainfall climatology and why it is important, not only from the longer term study of rainfall, but also for the future monitoring and estimation of rainfall. A summary of the range of satellites and their instruments is reviewed to provide a background to the techniques. These are discussed and their relative merits explored. Finally, examples of the techniques are shown, illustrating the applications to which the satellite-derived data sets may be put. Copyright

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Section: Physical Backgroundmentioning

confidence: 99%

Satellite rainfall climatology: a review

Kidd

2001

Intl Journal of Climatology

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173

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“…Kidd & Barrett, 1990) in terms of the simple difference between vertically polarized 85.5 and 37 GHz channels of the SSM/I. Here, the 37 GHz brightness temperature effectively replaces the empirical multichannel function utilized in SI, based on the observation that emissivity variations over land are generally similar for both frequencies, except where scatterers such as precipitation are present.…”

Section: Ssm/i Algorithmsmentioning

confidence: 99%

“…Bristol algorithms Kidd & Barrett (1990) described a modification of the so-called polarization-corrected temperature (PCT) (Spencer et al, 1989) from the SSM/I's 85.5 GHz channels as a basis for the estimation of precipitation over both land and water. The PCT is a linear combination of the vertical and horizontal polarizations that largely eliminates the contrast between land and water or wet surfaces and thus yields a precipitation signal whose interpretation does not strongly depend on the background surface type (scatterers excepted).…”

Section: Ssm/i Algorithmsmentioning

confidence: 99%

Satellite estimation of precipitation over land

Petty

Krajewski

1996

Hydrological Sciences Journal

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The availability of satellite-derived rainfall products to hydrologists and other natural scientists has increased enormously in the last five years. The purpose of this paper is to review concisely the current state-of-the-art of satellite precipitation estimation over land and the availability of standard products, and to highlight some of the strengths and limitations of satellite-derived rainfall data for hydrological applications. Methods based on infrared, visible and passive microwave radiation measurements are discussed. Results of several international activities aimed at evaluating the performance of the estimation algorithms are briefly summarized. Estimation satellitaire des précipitations terrestres Résumé La disponibilité pour les hydrologues et les autres spécialistes des sciences naturelles de produits concernant les précipitations, élaborés à partir de données satellitaires, a énormément augmenté au cours des cinq dernières années. Le but de cet article est de faire succinctement le point sur l'estimation satellitaire des précipitations terrestres ainsi que sur la disponibilité des produits courants, et de souligner les points forts et les limites des estimations satellitaires des précipitations en vue d'applications hydrologiques. Les méthodes basées sur la mesure de rayonnements infrarouges, visibles ou micro-ondes sont examinées. Les résultats de plusieurs actions internationales visant à évaluer les performances des algorithmes d'estimation sont brièvement résumées.

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“…The additional channels around 55 GHz gave information on the atmospheric temperature profile (Waters et al, 1975). Another microwave sensor onboard Nimbus-5 was ESMR (Electrically Scanning Microwave Radiometer), that had a single channel at 19.35 GHz and showed that rainfall can be detected from space (Kidd and Barrett, 1990).…”

Section: Introductionmentioning

confidence: 99%

Towards an operational Ice Cloud Imager (ICI) retrieval product

Eriksson¹,

Rydberg²,

Mattioli³

et al. 2019

Preprint

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Abstract. The second generation of the EUMETSAT Polar System (EPS-SG) will include the Ice Cloud Imager (ICI), the first operational sensor covering sub-millimetre wavelengths. Three copies of ICI will be launched that together will give a measurement series exceeding 20 years. Due to the novelty of ICI, preparing the data processing is especially important and challenging. This paper focuses on activities related to the operational product planned, but also presents basic technical characteristics of the instrument. A retrieval algorithm based on Bayesian Monte Carlo integration has been developed. The main retrieval quantities are ice water path (IWP), mean mass height (Zm) and mean mass diameter (Dm). A novel part of the algorithm is to fully present the inversion as a description of the posterior probability distribution. This is to prefer for ICI as its retrieval errors not always follow Gaussian statistics. A state-of-the-art retrieval database is used to test the algorithm and to give an updated estimate of the retrieval performance. The degrees of freedom in measured radiances, and consequently the retrieval precision, vary with cloud situation. According to present simulations, IWP, Zm and Dm can be determined with 90 % confidence at best inside 50 %, 700 m and 50 um, respectively. The retrieval requires that the data from the thirteen channels of ICI are remapped to a common footprint. First estimates of the errors introduced by this remapping are also presented.

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The use of passive microwave imagery in rainfall monitoring

Cited by 23 publications

References 17 publications

Satellite rainfall climatology: a review

Satellite rainfall climatology: a review

Satellite estimation of precipitation over land

Towards an operational Ice Cloud Imager (ICI) retrieval product

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