基于GDAL库的温度推算模型的研究与实现  

Research and Implementation of Temperature Prediction Model Based on GDAL Package

作　　者：刘文毫 卫建国 张春梅[1] 杨豫[3] 刘兆宇 LIU Wen-hao;WEI Jian-guo;ZHANG Chun-mei;YANG Yu;LIU Zhao-yu(School of Computer Science and Engineering,North Minzu University,Yinchuan 750021,China;Key Laboratory for Meteorological Disaster Monitoring and Early Warning and Risk Management of Characteristic Agriculture in Arid Regions,CMA,Yinchuan 750002,China;School of Agriculture,Ningxia University,Yinchuan 750021,China)

机构地区：[1]北方民族大学计算机科学与工程学院,宁夏银川750021 [2]中国气象局旱区特色农业气象灾害监测预警与风险管理重点实验室,宁夏银川750002 [3]宁夏大学农学院,宁夏银川750021

出　　处：《计算机技术与发展》2019年第10期74-78,共5页Computer Technology and Development

基　　金：国家自然科学基金项目(41565006,41465004);宁夏高等学校一流学科建设(电子科学与技术学科)(NXYLXK2017A07);宁夏回族自治区重点研发计划项目(2018BFH03012);北方民族大学校级物联网技术科研平台项目(PY1608)

摘　　要：为对无资料地区的温度分布情况进行推算,设计了基于无人机航测DEM数据的小网格温度分布推算模型,并采用开源GDAL库进行实现。项目首先通过GDAL库读取了宁夏太阳梁试验区5 m分辨率DEM数据,提取了温度推算模型中用到的3个因子:坡度、坡向、海拔,基于实测的经纬度范围采用Numpy库生成了温度推算模型中的经度纬度因子。基于提取的因子在温度推算模型中进行推算以后,生成了包含每个格点温度值的栅格文件。基于生成栅格文件,利用ArcGIS制图工具制作了该地区的温度分布图。通过与监测点实测的温度数据对比验证:实际温度值与模型推算的结果基本一致,且推算因子中海拔因子对结果贡献最大。该结果证明了算法所采用技术的易用性和算法所设计参数的准确性。In order to calculate the temperature distribution in areas without data,a small grid temperature distribution calculation model based on DEM data of UAV aerial survey is designed and implemented by using GDAL package.Firstly,the project uses GDAL package to read the DEM data of 5 m resolution in Ningxia Taiyangliang experimental area,extracts the three factors used in the temperature calculation model:slope,aspect and altitude,and uses the Numpy package to generate the longitude and latitude factors in the temperature calculation model based on the measured longitude and latitude range.After the extracted factors are calculated in the temperature calculation model,a grid file containing the temperature value of each grid point is generated.The temperature distribution map of this region is made by ArcGIS mapping tool.Through comparison with the actual temperature data measured at the monitoring point,it is verified that the actual temperature value is basically consistent with the calculated results of the model,and the altitude factor among the calculated factors contributes the most to the results.The results show that the technique is easy to use and the parameters are accurate.

关 键 词：栅格数据处理 GDAL ARCGIS DEM 温度推算 

分 类 号：TP31[自动化与计算机技术—计算机软件与理论]