Li Jiewei, Lu Ming, Lu Tianyi
School of Economics and Management, Shanghai Maritime University, Shanghai 201306, China.
Department of Economics, Antai College of Economics and Management, Shanghai Jiao Tong. University, Shanghai 200030, China.
Data Brief. 2022 Jul 4;43:108440. doi: 10.1016/j.dib.2022.108440. eCollection 2022 Aug.
This dataset includes many indexes of global cities. The variables of congestion level, skyscraper index, whether a city was bombed in WWII (World War II), and global cities' population are key variables. (1) The congestion level data were collected from TOMTOM company. The congestion level data include five indexes which are "Congestion level", "Morning peak Congestion level", "Evening peak Congestion level", "Highways Congestion level", "Non-highways Congestion level" in 2004, but only include two indexes in 2020 which are "Time lost per year" and "Congestion level". (2) The data of skyscraper index calculated using the data of building height from the Council on Tall Buildings and Urban Habitat, from which we can obtain accurate data on the number of buildings taller than 150 m. With these data, we constructed an index of skyscrapers taller than 150 m in a city. A building receives a score of 1.5 if it is taller than 150 m and shorter than 200 m, 2.0 if it is between 200 m and 300 m, and so on. Then, we summed the scores for skyscrapers in the city as the "skyscraper index" of the city. (3) The data of whether a city was bombed in WWII is dummy variable, if the urban area of a city was bombed in WWII, it is 1, and 0 otherwise. The authors consulted various historical files and determined the value. (4) The data of global cities' population, as well as the area and density of the city, are on the city-level, and were collected from the website of the cities or countries' statistics department. These indicators are good measures of the level of congestion, urban spatial structure, IV(instrumental variable) for urban spatial structure, and urban population in global cities, and can be reused in other analysis.
该数据集包含全球城市的许多指标。拥堵水平、摩天大楼指数、城市在二战期间是否被轰炸以及全球城市人口等变量是关键变量。(1)拥堵水平数据是从TOMTOM公司收集的。2004年的拥堵水平数据包括五个指标,即“拥堵水平”“早高峰拥堵水平”“晚高峰拥堵水平”“高速公路拥堵水平”“非高速公路拥堵水平”,但2020年只包括两个指标,即“每年损失的时间”和“拥堵水平”。(2)摩天大楼指数的数据是根据高层建筑与城市人居委员会的建筑高度数据计算得出的,通过这些数据我们可以获得高于150米的建筑数量的准确数据。利用这些数据,我们构建了一个城市中高于150米的摩天大楼指数。如果一座建筑高于150米且低于200米,则得分为1.5;如果在200米至300米之间,则得分为2.0,依此类推。然后,我们将城市中摩天大楼的得分相加,作为该城市的“摩天大楼指数”。(3)城市在二战期间是否被轰炸的数据是虚拟变量,如果一个城市的市区在二战期间被轰炸,则为1,否则为0。作者查阅了各种历史档案并确定了该值。(4)全球城市人口数据以及城市的面积和密度是城市层面的数据,是从城市或国家统计部门的网站收集的。这些指标是衡量全球城市拥堵水平、城市空间结构、城市空间结构的工具变量以及城市人口的良好指标,并且可以在其他分析中重复使用。