2020_2023_VIIRS_CumTemp_IxodesRicinus
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下载链接:
https://zenodo.org/record/12819566
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资源简介:
Abstract:
This dataset presents cumulative temperature masks that identify areas that are warm enough to stimulate tick questing activity, using a temperature threshold of 6 C. A series of scripts download and process VIIRS EO imagery of Land Surface Temperature to create temperature masks every 8 days using a combination of decadal (8-day) and daily satellite data. This dataset includes 2020, 2021, 2022, and 2023.
These result in Boolean masks where suitable areas according to temperature limits on I. ricinus are identified as 1 and unsuitable areas as 0. This mask can then be applied to the existing seasonal Tick model to make a more timely prediction of tick activity based on recent temperatures.
Image acquisition:
Two different products are downloaded VIIRS Land Surface Temperature/Emissivity 8-day L3 Global 1 km SIN grid (VNP21A2, version 6) and VIIRS Land Surface Temperature/Emissivity Daily L3 Global 1 km SIN grid (VNP21A1D, version 6).
Processing:The cumulative temperature mask is processed in two steps through two separate scripts:
a. Acquisition of 1km VIIRS Land Surface Temperature imagery from NASA's data repository.b. Importing of the imagery into a suitable format from which regularly updated masks are calculated.
File naming schema:
ER+ year + 8-day number (46 in total) for example: ER2333C68.tif 23 refers to the year 2023 and 33 (decadal number) in this example refers to the 22nd of September.
ERCumTemp + year + month+ day: ERCumTemp230109.jpg, 230109 refers to the 8-day starting 9th of January.
gif file presents time-series animation for a whole year.
Projection + EPSG code:Latitude-Longitude/WGS84 (EPSG: 4326)Spatial extent:Extent -32.0000000000000000,10.0000000000000000 : 68.9999999999999574,81.9999999999999716Spatial resolution:0.0083333 deg (approx. 1000 m) Temporal resolution:8-day for years 2020 to 2023
Pixel values:
Suitable areas as 1 and unsuitable areas as 0
Source: VIIRS NASA :VNP21A2 and VNP21A1D
Software used:Codes for modelling are in Python The software used for map production is ESRI ArcMap 10.8
License: CC-BY-SA 4.0Processed by:ERGO (Environmental Research Group Oxford) https://ergoonline.co.uk/ for the H2020 MOOD project
摘要:
本数据集提供累积温度掩码,用于识别温度足以刺激蜱虫(tick)寻宿主活动的区域,设定温度阈值为6℃。研究团队通过一系列脚本,结合8天尺度与每日卫星数据,下载并处理VIIRS地表温度(Land Surface Temperature)地球观测(Earth Observation)影像,每8天生成一次温度掩码。本数据集涵盖2020、2021、2022及2023年四个年度的数据。
生成的结果为布尔掩码(Boolean masks),其中符合蓖麻硬蜱(I. ricinus)温度适宜范围的区域标记为1,不适宜区域标记为0。该掩码可应用于现有季节性蜱虫模型,基于最新温度数据实现蜱虫活动的更及时预测。
图像获取:
本次研究下载了两款VIIRS产品:VIIRS地表温度/发射率8天级L3全球1km SIN网格(VNP21A2,版本6),以及VIIRS地表温度/发射率每日级L3全球1km SIN网格(VNP21A1D,版本6)。
处理流程:
累积温度掩码通过两个独立脚本分两步生成:
a. 从美国国家航空航天局(National Aeronautics and Space Administration, NASA)的数据仓库获取1km分辨率的VIIRS地表温度影像。
b. 将影像导入适配格式,据此计算定期更新的温度掩码。
文件命名规则:
1. 命名格式为ER+年份+8天编号(共46个编号),示例:ER2333C68.tif,其中"23"代表2023年,本例中的"33"(年代编号)对应9月22日。
2. 命名格式为ERCumTemp+年份+月份+日期,如ERCumTemp230109.jpg,"230109"代表以1月9日为起始的8天周期。
另有GIF文件展示全年时间序列动画。
投影与EPSG代码:
采用纬度-经度/WGS84坐标系(EPSG: 4326)
空间范围:
空间范围为-32.0000000000000000,10.0000000000000000 至 68.9999999999999574,81.9999999999999716
空间分辨率:
0.0083333度(约1000米)
时间分辨率:
2020至2023年期间为8天周期。
像素值:
适宜区域标记为1,不适宜区域标记为0。
数据来源:
NASA VIIRS:VNP21A2与VNP21A1D
所用软件:
建模代码基于Python语言编写,地图制作所用软件为ESRI ArcMap 10.8。
授权协议:
CC-BY-SA 4.0
处理方:
英国牛津环境研究小组(ERGO, Environmental Research Group Oxford)https://ergoonline.co.uk/,为欧盟地平线2020(H2020)MOOD项目提供支持。
创建时间:
2024-08-15



