2019–2020年西安城市PM2.5、气体污染物及气象数据集

本数据集包括在陕西关中平原区域生态环境变化与综合治理国家野外科学观测站的高新子观测场利用气体分析仪获取的环境大气中的氮氧化物、二氧化硫、臭氧、一氧化碳等污染气体的浓度数据，通过气象站对站点周边的温湿度、气压、太阳辐射，风速风向等进行观测得到的气象数据以及利用微流量便携式采样仪器采集离线滤膜并分析出的PM2.5质量数据。观测场位于西安市城市核心区域，数据的观测时间范围是2019年1月到2020年12月，其中污染气体数据的时间分辨率是5分钟，气象数据的时间分辨率是1分钟，PM2.5数据的时间分辨率是24小时。观测仪器每周进行维护和检测以保证仪器的采集质量，分析仪器每月进行仪器校准和标定保证数据质量。本数据集可以为关中地区大气环境提供基础数据记录，也为进一步的污染评价、控制和治理等提供了数据支撑，为关中区域大气污染过程、成因机制，大气污染防控提供科学建议。

This dataset includes concentration data of pollutant gases including nitrogen oxides, sulfur dioxide, ozone, carbon monoxide and other pollutant gases in ambient air, collected by gas analyzers at the Gaoxinzi Observation Station of the National Field Scientific Observation and Research Station for Regional Ecological Environment Change and Comprehensive Management in the Guanzhong Plain, Shaanxi Province. It also contains meteorological data obtained by monitoring ambient temperature and humidity, atmospheric pressure, solar radiation, wind speed and direction and other meteorological parameters via an on-site meteorological station, as well as PM2.5 mass concentration data derived from offline filter membranes collected using micro-flow portable sampling instruments and subsequent laboratory analysis. The observation station is located in the core urban area of Xi'an, and the data collection period runs from January 2019 to December 2020. The temporal resolution of the pollutant gas data is 5 minutes, that of the meteorological data is 1 minute, and that of the PM2.5 data is 24 hours. To ensure data collection quality, the observation instruments are maintained and inspected weekly, while the analytical instruments are calibrated and standardized monthly to guarantee data reliability. This dataset provides fundamental data records for the atmospheric environment of the Guanzhong region, offers data support for subsequent pollution assessment, control and governance, and delivers scientific references for studying atmospheric pollution processes, their causal mechanisms and pollution prevention and control measures in the Guanzhong area.

搜集汇总

背景与挑战

背景概述

该数据集提供了2019年至2020年西安市城市核心区域的PM2.5、气体污染物（如氮氧化物、二氧化硫、臭氧、一氧化碳）及气象要素（如温湿度、气压、太阳辐射、风速风向）的观测数据，具有高时间分辨率（污染气体5分钟、气象1分钟、PM2.5每日）。数据集以电子表格形式存储，容量为86.37MB，旨在为关中地区大气环境研究、污染评价和治理提供基础数据支撑，并已应用于多项科研和教学项目。