Cloud motion in the GOCI/COMS ocean colour data

Robinson, Wayne D.; Franz, Bryan A.; Mannino, Antonio; Ahn, Jae-Seong

doi:10.1080/01431161.2016.1225177

Cited by 6 publications

(3 citation statements)

References 12 publications

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“…During the measurement process, the pulsed neutron tube continuously emits a high-energy fast neutron pulse to activate the oxygen element in the fluid. The flow rate of the fluid can be determined based on the count rate measured by the instrument and the characteristic exponential decay rate [4].…”

Section: State Of the Artmentioning

confidence: 99%

Technical Application of Petroleum Logging Instruments in Marine Logging

Zhao

Wang

et al. 2018

Polish Maritime Research

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To solve the problem of offshore oilfield development, based on the newly introduced pulsed neutron oxygen activation logging instrument, the application research of test design and interpretation method was carried out and applied to actual production. The structure, technical indicators and logging principles of pulsed neutron oxygen activation logging tools were introduced. The test design under different well conditions was studied, including general positive and negative injection, oil sleeve injection, single oil pipe configuration and multitubing configuration. A large amount of field test data was collected and analysed technically. A set of effective interpretation models was proposed. The corresponding interpretation software was developed. A set of test design methods and operating specifications for different well conditions were developed. Based on the conventional interpretation method, the peak selection, the double-tuber peak identification and the carbon dioxide flooding interpretation method were added. The results show that the test design and interpretation methods were applied well through a large number of field tests and production applications. Therefore, pulsed neutron oxygen activated injection profile logging technology is successfully applied in offshore oil fields.

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Section: State Of the Artmentioning

confidence: 99%

Technical Application of Petroleum Logging Instruments in Marine Logging

Zhao

Wang

et al. 2018

Polish Maritime Research

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“…Hence, the multi-spectral displacement can be used as a feature to detect clouds or moving objects. This idea has been exploited for geostationary satellites, where spectral bands are acquired at slightly different times [3], [4], [5], and very high and moderate spatial resolution satellites, where a parallax angle between pan-chromatic and multi-spectral bands exist [6], [7], [8], [9], [10].…”

Section: Introductionmentioning

confidence: 99%

Multispectral Misregistration of Sentinel-2A Images: Analysis and Implications for Potential Applications

Skakun

Vermote

Roger

et al. 2017

IEEE Geosci. Remote Sensing Lett.

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This study aims at analyzing sub-pixel misregistration between multi-spectral images acquired by the Multi-Spectral Instrument (MSI) aboard Sentinel-2A remote sensing satellite, and exploring its potential for moving target and cloud detection. By virtue of its hardware design, MSI's detectors exhibit a parallax angle that leads to sub-pixel shifts that are corrected with special pre-processing routines. However, these routines do not correct shifts for moving and/or high altitude objects. In this letter, we apply a phase correlation approach to detect sub-pixel shifts between B2 (blue), B3 (green) and B4 (red) Sentinel-2A/MSI images. We show that shifts of more than 1.1 pixels can be observed for moving targets, such as airplanes and clouds, and can be used for cloud detection. We demonstrate that the proposed approach can detect clouds that are not identified in the built-in cloud mask provided within the Sentinel-2A Level-1C (L1C) product.

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“…Obviously, improving AMV spatial and temporal resolution is essential to tracking cloud features in a TC system, especially in the high-speed zone of the eyewall [37], [41], [43], [44]. Since the 1960s, when cloud motion was manually identified and measured initially [45], various objective methods were developed to extract AMVs, such as block matching [36], [46]- [48], object feature matching [49]- [51], and optical flow algorithms [52]- [54].…”

mentioning

confidence: 99%

Automatically Locate Tropical Cyclone Centers Using Top Cloud Motion Data Derived From Geostationary Satellite Images

Zheng

Guo

Yang

et al. 2019

IEEE Trans. Geosci. Remote Sensing

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This article presents a novel technique for automatically locating tropical cyclone (TC) centers based on top cloud motions in consecutive geostationary satellite images. The high imaging rate and spatial resolution images of the Gaofen-4 geostationary satellite enable us to derive pixel-wise top cloud motion data of TCs, and from the data, TC spiral centers can be accurately determined based on an entirely different principle from those based on static image features. First, a physical motion field decomposition is proposed to eliminate scene shift and TC migration in the motion data without requiring any auxiliary geolocation data. This decomposition does not generate the artifacts that appear in the results of the previously published motion field decomposition. Then, an algorithm of a motion direction-based index embedded in a pyramid searching structure is fully designed to automatically and effectively locate the TC centers. The test shows that the TC concentric motions are more clearly revealed after the proposed motion field decomposition and the located centers are in good agreement with the cloud pattern centers in a visual sense and also with the best track data sets of four meteorological agencies. Index Terms-Geostationary satellite, motion field decomposition, tropical cyclone (TC), typhoon eye. I. INTRODUCTIONT ROPICAL cyclones (TCs) are intense warm-cored cyclonic vortices, developed from low-pressure systems over the tropical oceans and driven by complex air-sea interaction [1]. Recent trend analyses based on both archive data and future projections consistently suggest an increase of the mean intensity of global TCs over coming decades [2]-[6], although there could be a decrease in TC frequency [7], [8].

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Cloud motion in the GOCI/COMS ocean colour data

Cited by 6 publications

References 12 publications

Technical Application of Petroleum Logging Instruments in Marine Logging

Technical Application of Petroleum Logging Instruments in Marine Logging

Multispectral Misregistration of Sentinel-2A Images: Analysis and Implications for Potential Applications

Automatically Locate Tropical Cyclone Centers Using Top Cloud Motion Data Derived From Geostationary Satellite Images

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