Maximum temperature at El Verde Field Station, Rio Grande, Puerto Rico since October 1992

Daily maximum air temperature at the El Verde Field Station since October 1992. Temperature is measured daily using a manual Min-Max thermometer placed in a wooded box in the understory. The box is mostly shaded by surrounding trees, but it is more exposed to sunlight after hurricanes defoliate the forest canopy (e.g., hurricane Maria in 2017). Measurements are available for workdays only, as a technician at the station collects measurements. The thermometer is reset after each reading.

Notes:
• An automatic Hobo pendant sensor complements reading (see El Verde Field Station Air temperature from automatic sensor).
• Daily minimum air temperature available in a separated data set.
• Data from before 1992 is available in dataset #181 (1975 -August 1992). Data-missing gaps were filled in by extrapolated data from other sources, making the subsequent manipulations less valuable for interpreting long term trends.

Daily emperature has been measured at the El Verde Field Station since 1975 (see methods). These data was divided into two data set: #16, having data from 1992 to current and #181 which has data from1975 till August 1992. Data-missing gaps where filled in by extrapolated data from other sources, making the subsequent manipulations less valuable for interpreting long term trends.
Monthly averages have been calculated. Maximum values for maximum temperature were recorded from May to October with a range from 29 to 30 and peaks of 29.7 Centigrade in October. The months of October through December show the most dramatic increase, specially December (see chart). Highest average maximum temperatures during these years were recorded in 1998 and 1999 (See chart). Max monthly temperatures appear to be increasing from this years on.

Support for this work was provided by grants BSR-8811902, DEB-9411973, DEB-9705814 , DEB-0080538, DEB-0218039 , DEB-0620910 , DEB-1239764, DEB-1546686, and DEB-1831952 from the National Science Foundation to the University of Puerto Rico as part of the Luquillo Long-Term Ecological Research Program. Additional support provided by the University of Puerto Rico and the International Institute of Tropical Forestry, USDA Forest Service.

1992年10月起，埃尔韦尔野外站（El Verde Field Station）的每日最高气温观测数据集。气温通过安置于林下层木质箱体内的手动最高最低温度计（manual Min-Max thermometer）每日测量。该箱体大部分时间被周边树木遮阴，但在飓风导致森林冠层落叶后（例如2017年的玛丽亚飓风），其受日照暴露程度会有所提升。仅工作日可获取观测数据，由站内技术人员完成读数采集，且每次读数后均会重置温度计。

备注：
• 配套使用Hobo Pendant自动传感器（Hobo pendant sensor）进行补充观测（详见《自动传感器获取的埃尔韦尔野外站气温数据集》）。
• 每日最低气温数据另有独立数据集发布。
• 1992年之前的观测数据可参见数据集#181（1975年至1992年8月）。缺失数据时段已通过其他来源的外推数据填补，这会导致后续分析在解读长期趋势时的可靠性有所降低。

埃尔韦尔野外站自1975年起开展气温观测（详见研究方法）。该数据集分为两套：#16包含1992年至今的观测数据，#181包含1975年至1992年8月的观测数据。缺失数据时段已通过其他来源的外推数据填补，这会导致后续处理在解读长期趋势时的参考价值有所下降。

已计算月均最高气温数据。最高气温的月极值时段为5月至10月，区间为29至30摄氏度，10月达到29.7摄氏度的峰值。10月至12月的最高气温增幅最为显著，尤以12月为甚（详见图表）。观测时段内的最高月均最高气温出现在1998年和1999年（详见图表）。自该观测时段起，月最高气温似乎呈上升趋势。

本研究得到美国国家科学基金会（National Science Foundation）拨付的多项基金资助，包括BSR-8811902、DEB-9411973、DEB-9705814、DEB-0080538、DEB-0218039、DEB-0620910、DEB-1239764、DEB-1546686及DEB-1831952，资助对象为波多黎各大学，作为卢基洛长期生态研究计划（Luquillo Long-Term Ecological Research Program）的一部分。额外资助来自波多黎各大学以及美国农业部林务局热带森林国际研究所（International Institute of Tropical Forestry, USDA Forest Service）。