Atmospheric CO2 Record from In Situ Measurements at K-Puszta, Hungary (1981 - 1997)

The K-puszta regional background air pollution monitoring station was established in a clearing in a mixed forest on the Hungarian Great Plain in the middle of the Carpathian Basin. K-puszta is as free from direct pollution as possible in the highly industrialized, densely populated central Europe. Because of the growing vegetation, the station was moved in September 1993 to a larger clearing, also at the same elevation, approximately 500 m from the original site. The region is climatologically calm. The yearly mean atmospheric CO2 concentration at K-puszta, Hungary increased from 354.1 parts per million (ppm) in 1981 to 377.0 ppm in 1997. Because the K-puszta station is located in a clearing of a forested area on the Hungarian Great Plain, it is subject to significant biospheric effects. As a result, the record from K-puszta shows high seasonal and interannual variability. However, the trends and temporal features of the K-puszta record parallel those observed at other Northern Hemisphere baseline air pollution monitoring stations (Haszpra 1995). For access to the data files, click this link to the CDIAC data transition website: http://cdiac.ess-dive.lbl.gov/trends/co2/kpuszta.htmlK-puszta区域本底空气污染监测站设立于喀尔巴阡盆地中部匈牙利大平原的一片混交林开阔地带。在高度工业化、人口稠密的中欧地区，该站点尽可能规避直接污染源的影响。由于区域植被逐渐扩张，K-puszta站于1993年9月迁至距原址约500米的同海拔更大开阔区域。该区域气候条件静稳。匈牙利K-puszta站的年平均大气二氧化碳（CO₂）浓度从1981年的354.1 ppm升至1997年的377.0 ppm。因该站位于匈牙利大平原林区的开阔地带，其观测数据受到显著的生物圈效应影响。由此，K-puszta的观测记录呈现出显著的季节与年际变率。不过，该观测序列的变化趋势与时间特征，与北半球其他本底空气污染监测站的观测结果高度一致（Haszpra，1995）。如需获取数据文件，请点击以下链接跳转至二氧化碳信息分析中心（CDIAC）数据转换网站：http://cdiac.ess-dive.lbl.gov/trends/co2/kpuszta.html