Anthropogenic heat flux (Q_f), which originates through energy consumption from buildings, industrial plants, vehicle exhausts, and human metabolism releases, is an important component in the urban Surface Energy Balance (SEB) system, and is key to understanding of many urban environmental issues. The present study provided a hybrid Q_f modeling approach, which combined the inventory and GIS approach to create a 365-day hourly Q_f profile at 120 m spatial resolution in Los Angeles County, California, USA. Q_f was estimated by separate calculation of heat release from buildings, traffics, and human metabolism, respectively. The results indicated that Q_f showed different magnitudes and diurnal patterns between workdays (dual-peak shape) and weekends/holidays, and also varied with seasons, and land use types. Qf yielded the highest values in the summer workdays, with its maximum value of 7.76 w/m². Q_f in hot summer workdays was obviously higher than that in the average summer workdays, which caused by higher demands for space cooling in buildings, and can reach 8.14 w/m² at maximum. Building energy consumption was identified as the dominant contributor to the Q_f in Downtown Los Angeles, which was found to have the largest mean Q_f throughout the year among all neighborhoods. It can be concluded that Q_f in the downtown was more significant in workdays than that in non-workdays, and its maximum value can reach 100 w/m². It is suggested that our approach may have wider applicability for Q_f estimation in large areas compared with the existing studies, as all the data used were available to the public. A high spatial and temporal Q_f profile, which can readily be incorporated into urban energy balance and Urban Heat Island (UHI) studies, provides valuable data and information for pertinent government agencies and researchers.

人为产生的热通量（Q _f）来自建筑物，工厂，汽车尾气和人体新陈代谢释放的能量，是城市表面能平衡（SEB）系统的重要组成部分，是了解许多城市的关键环境问题。本研究提供了一种混合的Q _f建模方法，该方法结合了库存和GIS方法，在美国加利福尼亚州洛杉矶县以120 m的空间分辨率创建了365天的每小时Q _f剖面图。Q _f是通过分别计算建筑物，交通和人体新陈代谢的热量来估算的。结果表明Q _f在工作日（双峰形）与周末/节假日之间显示出不同的幅度和昼夜模式，并且还随季节和土地利用类型而变化。Qf在夏季工作日产生最高值，其最大值为7.76 w / m ²。夏季炎热的工作日中的Q _f明显高于夏季平均工作日的Q _f，这是由于建筑物对空间制冷的要求更高，最高可达到8.14 w / m ²。建筑能耗被确定为洛杉矶市中心Q _f的主要贡献者，在所有街区中，全年的平均Q _f被发现是最大的。由此可以得出结论是Q _˚F市区的工作日比非工作日更重要，其最大值可以达到100 w / m ²。建议我们的方法与现有研究相比，在大面积Q _f估计上可能具有更广泛的适用性，因为所使用的所有数据都是公开的。高时空_Qf轮廓可以轻松地纳入城市能源平衡和城市热岛（UHI）研究中，为相关的政府机构和研究人员提供了有价值的数据和信息。