Daily summaries of photosynthetically active radiation (PAR), relative humidity, and temperature data logged above, within, and below Betula nana and Salix pulchra shrub canopies during the summer of 2012 in vicinity of Toolik Lake, Alaska.

This file contains limited daily summaries of PAR, relative humidity, and temperature data monitored above, within, and below Betula nana and Salix pulchra shrub canopies at two locations near Toolik Lake, Alaska during the summer of 2012. The location of the PAR sensor and dataloggers were co-located with the LTER shrub plots (block 1 and 2), also used for the chamber flux and point frame measurements taken this same year. There were two logging sites (block 1 and 2), each of which had PAR five PAR sensors, two for each shrub canopy and one above, as well as three sensors to log relative humidity and temperature. This file contains maximum PAR, total daily PAR, and daily average temperature data, as well as intermittant maximum and minimum values for temperature and relative humidity. Data monitored every five minutes is available in the file "ShrubCanopy_InstantLogger".

本数据集涵盖2012年夏季，在阿拉斯加州图利克湖（Toolik Lake）附近两处监测点位采集的矮桦（Betula nana）与美丽柳（Salix pulchra）灌丛冠层上方、内部及下方的光合有效辐射（Photosynthetically Active Radiation，PAR）、相对湿度与气温日统计数据。本数据集所用的光合有效辐射传感器与数据记录仪（dataloggers），其布设点位与当年同期用于箱室通量法、点框架法观测的长期生态研究（Long-Term Ecological Research，LTER）灌丛样地（区块1与区块2）完全重合。本次共设置两处数据采集站点（区块1与区块2），每个站点均配备5台光合有效辐射传感器：其中2台分别布设至两种灌丛的冠层内部，1台布设于冠层上方；同时配备3台传感器用于采集相对湿度与气温数据。本文件包含光合有效辐射最大值、日总光合有效辐射、日平均气温数据，以及气温与相对湿度的间断性极值数据。每5分钟采集的原始监测数据可在文件"ShrubCanopy_InstantLogger"中获取。