Thin and thick cloud top height retrieval algorithm with the Infrared Camera and LIDAR of the JEM-EUSO Space Mission

Sáez-Cano, G.; Ríos, J. A. Morales de los; Peral, L. del; Neronov, A.; Wada, Satoshi; Frías, M. D. Rodríguez

doi:10.1051/epjconf/20158903001

Cited by 2 publications

(4 citation statements)

References 7 publications

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“…The AMS [2] is crucial to estimate the effective UHECR & EHECR exposure of the telescope and for the proper analysis of the UHECR & EHECR events under cloudy conditions [3,4].…”

Section: The Atmospheric Monitoring Systemmentioning

confidence: 99%

“…Therefore a multispectral approach has been selected as baseline of the Infrared Camera of JEM-EUSO [6]. The delailed and dedicated retrieval algorithm for the cloud top height parameter that fulfill the scientific and technical requierements of the Infrared Camera of JEM-EUSO can be found in these Proceedings [4]. In the preliminary design of the IR-Camera a bi-spectral design with two filters in the cold spot of the optics that allows a multispectral snapshot camera without a dedicated filter wheel mechanism is foreseen.…”

Section: The Infrared Cameramentioning

confidence: 99%

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The Atmospheric Monitoring System of the JEM-EUSO space mission

Frías

Toscano

Bozzo

et al. 2015

EPJ Web of Conferences

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Abstract. An Atmospheric Monitoring System (AMS) is a mandatory and key device of a space-based mission which aims to detect Ultra-High Energy Cosmic Rays (UHECR) and Extremely-High Energy Cosmic Rays (EHECR) from Space. JEM-EUSO has a dedicated atmospheric monitoring system that plays a fundamental role in our understanding of the atmospheric conditions in the Field of View (FoV) of the telescope. Our AMS consists of a very challenging space infrared camera and a LIDAR device, that are being fully designed with space qualification to fulfil the scientific requirements of this space mission. The AMS will provide information of the cloud cover in the FoV of JEM-EUSO, as well as measurements of the cloud top altitudes with an accuracy of 500 m and the optical depth profile of the atmosphere transmittance in the direction of each air shower with an accuracy of 0.15 degree and a resolution of 500 m. This will ensure that the energy of the primary UHECR and the depth of maximum development of the EAS ( Extensive Air Shower) are measured with an accuracy better than 30% primary energy and 120 g/cm 2 depth of maximum development for EAS occurring either in clear sky or with the EAS depth of maximum development above optically thick cloud layers. Moreover a very novel radiometric retrieval technique considering the LIDAR shots as calibration points, that seems to be the most promising retrieval algorithm is under development to infer the Cloud Top Height (CTH) of all kind of clouds, thick and thin clouds in the FoV of the JEM-EUSO space telescope.

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“…The AMS [2] is crucial to estimate the effective UHECR & EHECR exposure of the telescope and for the proper analysis of the UHECR & EHECR events under cloudy conditions [3,4].…”

Section: The Atmospheric Monitoring Systemmentioning

confidence: 99%

Section: The Infrared Cameramentioning

confidence: 99%

The Atmospheric Monitoring System of the JEM-EUSO space mission

Frías

Toscano

Bozzo

et al. 2015

EPJ Web of Conferences

Self Cite

View full text Add to dashboard Cite

show abstract

“…To fully monitor the atmosphere and to retrieve the cloud coverage and cloud top height in the JEM-EUSO FoV, an Atmospheric Monitoring System (AMS) is foreseen in the telescope. The AMS [2] is crucial to estimate the effective UHECR & EHECR exposure of the telescope and for the proper analysis of the UHECR & EHECR events under cloudy conditions [3], [4].…”

Section: The Atmospheric Monitoring Systemmentioning

confidence: 99%

Section: The Infrared Cameramentioning

confidence: 99%

The Atmospheric Monitoring System of the JEM-EUSO space mission

Frías

losRíos

Peral

et al. 2013

EPJ Web of Conferences

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Abstract. An Atmospheric Monitoring System (AMS) is mandatory and a key element of a space-based mission which aims to detect Ultra-High Energy Cosmic Rays (UHECR). JEM-EUSO has a dedicated atmospheric monitoring system that plays a fundamental role in our understanding of the atmospheric conditions in the Field of View (FoV) of the telescope. Our AMS consists of an infrared camera and a LIDAR device that are being fully designed with space qualification to fulfil the scientific requirements of this space mission. This AMS will provide information of the cloud cover in the FoV of JEM-EUSO, as well as measurements of the cloud top altitudes with an accuracy of 500 m and the optical depth profile of the atmosphere transmittance in the direction of each air shower with an accuracy of 0.15 degree and a resolution of 500 m. This will ensure that the energy of the primary UHECR and the depth of maximum development of the EAS (Extensive Air Shower) are measured with an accuracy better than 30% and 120 g/cm 2 , for EAS occurring either in the clear sky or with the EAS depth of maximum development above optically thick cloud layers. Moreover novel stereoscopic and radiometric retrieval techniques are under development to infer the Cloud Top Height (CTH) from the brightness temperature patterns obtained from the infrared camera. is compared to that of clear sky signal (green line). Now the fluorescence radiation suffers absorption but the Cherenkov peak takes place on ground due to the fact that the cirrus clouds are thin clouds.

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Thin and thick cloud top height retrieval algorithm with the Infrared Camera and LIDAR of the JEM-EUSO Space Mission

Cited by 2 publications

References 7 publications

The Atmospheric Monitoring System of the JEM-EUSO space mission

The Atmospheric Monitoring System of the JEM-EUSO space mission

The Atmospheric Monitoring System of the JEM-EUSO space mission

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