SHI-JUN YANG, YUN-XUAN BAO, CAN CHEN, MING-HONG LU, WAN-CAI LIU, and SUNG-JUN HONG
Ecosphere; Mar2020, Vol. 11 Issue 3, p1-14, 14p
NILAPARVATA lugens, ATMOSPHERIC circulation, PADDY fields, VIRUS diseases, EAST Asians, HUMAN migrations, and MEDICAL climatology
Rice planthoppers and related viral diseases have become one of the most important factors affecting rice production in Asian countries, and the resulting abuse of pesticides is laying a hidden danger for future food security. As the most economically devastating species, the brown planthopper, Nilaparvata lugens (Stål), moves from the tropical Indochina Peninsula to temperate regions where it cannot overwinter annually with the feature of long-range migration, and eventually appears in paddy fields of most East Asian countries. Compared with the overland migration that has been studied in more detail, there is relatively less understanding of N. lugens' performance in transnational movement, especially in the representative overseas migration between China and Northeast Asia. Based on the light-trap data from China and Korea and the matched meteorological data of East Asia in 2016, a typical overseas migration event was basically analyzed. The results are as follows. First, the source area of the N. lugens population in this migration was in southeastern Jiangsu and eastern Shanghai. They took off at dusk on 1 August, flying at the altitude of 1700-2200 m, and landed in southwestern Korea at 02:00-11:00 UTC on 3 August. Second, a southerly airflow belt was the main weather factor for population's overseas migration, and the confrontation between the western Pacific subtropical high and a northern high pressure in southern Korea was the main reason for population to land. Besides, we discussed the one-off feature of overseas migration compared to overland migration. These results show the close relation between weather systems and the migration dynamics of N. lugens and may extend the perception for N. lugens' behavioral chain in the long-range migration between China and Northeast Asia, thus allowing a sufficient time for reasonable and effective control measures. [ABSTRACT FROM AUTHOR]
Strukton Rail wants to try new training methods for their employees by creating a virtual reality simulation where the workers can practice in a safe environment. Strukton employees have to do maintenance work in heights in the rail track. Besides the risks related to the actual job of working in heights, external factors like the weather changes play a big role in the increase of risks in the worksite. In the VR simulation that will be created to solve the client’s problem, a weather system will be created to produce hazardous weather conditions, so the employees can practice in those conditions as well and learn about the conditions that they should stop working. In this research literature review is conducted to better understand what makes the different weather components look real and how to achieve better visual realism for a weather system in VR. Afterwards different approaches are tried in Unity engine to create a multi-layered weather system for a VR simulation. The focus of the prototyping was to create a realistic transition from a clear sky to a thunderstorm. During the experimental design, besides the realistic looking weather system, two more scenes were created. One where the complexity of the weather system was reduced, and the illumination of the environment wasn’t changing accordingly to the changes in the weather, and one where the weather system was rendered using cartoony shading and textures, rather than realistic looking ones. The three scenes were tested out with the safety officer of Strukton Rail and 9 other participants. During the tests it was found out that an increase in visual realism of the weather system had a significant role on the feeling of presence of the participants. It was noticed that what had the biggest impact in the effectiveness of the weather system was the change of lighting and illumination of the environment depending on the weather changes, and the increase in complexity/detail of the weather components. The rendering technique didn’t have a big impact as the cartoony rendered weather system was as clear as the realistic looking one, and according to the safety officer the thunderstorm felt hazardous in both scenarios.
Chinchilla News and Murilla Advertiser (Queensland), July 27, 2020 News, 2pp
PARTS of the Western Downs received promising downpours as rolling winter storms unleased more than 20mm in Chinchilla and Dalby. Bureau of Meteorology forecaster Shane Kennedy said the heaviest falls fell on Sunday, although Saturday also produced strong totals. "Across the weekend five to 15mm fell across (the Western Downs) with the highest falls on Saturday at 9am in Dalby recording 21mm," Mr Kennedy said...