Geostationary Meteorological Satellite (GMS) observations of diurnal variations of cirrus canopy and eye diameter in mature northwest Pacific typhoons are presented. The variations in cirrus canopy are quantitatively determined by the areal distribution of equivalent black body temperatures (TBB) (10.5-12.5*m, window channel) in the ranges: TBB*-70*, -70*, * TBB*-50*, -50*TBB*30 and -30*TBB*0*. The coldest region has a sharp maximum at 0600-0730LSTand a minimum at 1800-2100LST. The maxima in the warmer cloud tops occur some hour later at 1500-1800LST and 2100LST, respectively, as rising the TBB thresholds.Satellite observed eye diameter exhibits a wedge-shaped morning minimum and a plateau-shaped afternoon-evening maximum. The time lagged diurnal variation of areal extent of warmer cirrus clouds, and the out of phase variation of eye diameter compared to the coldest cirrus clouds, is explained as a result of outward and inward expansion of cirrus following an early morning peak in eyewall and spiral band convections.When a typhoon passes over or near to large islands, the total cirrus canopy is reduced in size and a second afternoon peak in area! coverage develops.

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A marked periodic oscillation of trochoidal motion was found in the track of the eye fixed by radar and satellite for the typhoon 8019 (WYNNE). Five remarkable oscillations with the period of 5hr-8 hr and the maximum amplitude of 23km were observed for 36 hrs by land-based Miyakojima radar. The amplitude decreased with decreasing period. The analysis of PPI echo image shows that the center of typhoon eye did not agree with the system center of the whole typhoon circulation; and the eye shifted and rotated counterclockwise around the system center. In the occurrence of the phenomenon, the "double eye" structure of the echo and the double wind maxima were observed in the typhoon; the outer and inner eyewalls have diameters of about 260km and 30km, respectively. In particular, elliptical circulation of the pressure and wind fields and resulting the rectangular-shaped echo configuration were found an area inside the radius of the outer eyewall. The rectangle and elliptical circulation rotated counterclockwise around the system center with the same period of that of trochoidal motion. Both features were inscribed in the outer eyewall ring with radius of approximately 130km. The eye traced the subpoint corresponding to one of the focus of the ellipse on the major axis; consequently, the trochoidal motion took places in the typhoon circulation. However, it was not clear why the eye was shifted.

For the development of a smart food chain, it is necessary to produce stable high-quality agricultural products in the agricultural sector which is the starting point of the food system, and it is important to accumulate and analyse the phenotypic information of agricultural products during cultivation. An easy, rapid, non-destructive and quantitative evaluation method of tree vigor is desirable. This study aimed to develop an X-ray fluorescent (XRF) spectroscopy of fresh leaves and infrared (IR) spectroscopy of fruit juice using a portable device. In addition, the relationship between the spectroscopic information and the surface color of agricultural products was studied. The results showed that the changes in leaf element were in balance and organic matters in the fruits due to slight differences in cultivation conditions were grasped as the XRF and IR spectroscopic information. Furthermore, such changes could be reflected as the differences in the surface color information obtained using the digital camera. Therefore, it was experimentally suggested that the multiband optical sensing could be a powerful and important tool for realizing smart food chains and phenomics research starting from agricultural production.

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