relative_humidity_pct_1cm_sand_25_shade.zip

Relative humidity (%) 1 cm above the ground assuming a sand substrate and 25% shade from vegetation. Each netCDF file contains 24 layers of global extent, one for each hour of the day (starting at 0:00 hrs) for a given month of the year, at ~15km resolution.

Fileset Description:

The microclim dataset provides microclimate estimates of conditions above and below ground for each hour of the day for the middle day of each month based on a long-term average climatology. Details of this dataset are presented in [Kearney et al. 2014].

The dataset comprises a set of NetCDF files with one file per variable per month, each file comprising 24 layers (one for each hour of the day from 0:00 hrs to 23:00 hrs, so layer 13 is 12:00 midday) for the globe (852 rows, 2159 columns, latitudinal extents -58.57 to 83.43 degrees, longitudinal extents -180.00 to 180.00 degrees). For the naming convention, mon is month of the year (1 to 12, where 1 = Jan, 12 = Dec), shd is shade level in % (0, 25, 50, 75, 90, 100), and sub is substrate (soil, rock, sand).

To facilitate downloading the data, the NetCDF files are grouped into compressed (zipped) files, one per variable per shade and substrate type, each comprising all monthly values and, for the substrate temperatures, all depths. Note that not all variables are shade or substrate specific, specifically zenith angle, wind speeds, solar radiation, and 120 cm air temperature and relative humidity.

本数据集包含砂质基底、植被遮蔽25%条件下，地面上方1厘米处的相对湿度（单位：%）数据。每份NetCDF（Network Common Data Form）文件包含全球范围的24层数据，对应一年中指定月份每日的每一小时（始于0:00），空间分辨率约为15公里。

数据集说明：
微气候数据集（microclim）基于长期平均气候学数据，提供每月中旬每日每小时的地下及近地面微气候估算结果。该数据集的详细信息参见[Kearney等人，2014]。

本数据集由一系列NetCDF文件组成：每月对应每个变量各一份文件，每份文件包含全球范围的24层数据（对应每日0:00至23:00的每一小时，其中第13层为正午12:00），数据维度为852行×2159列，纬度范围为-58.57°至83.43°，经度范围为-180.00°至180.00°。

文件命名规则如下：mon代表年度月份（取值1至12，1对应1月，12对应12月）；shd代表遮蔽率（单位：%，取值为0、25、50、75、90、100）；sub代表基底类型（soil为土壤、rock为岩石、sand为砂质）。

为便于数据下载，NetCDF文件已按遮蔽类型与基底类型分变量打包为压缩（ZIP）文件，每份压缩包包含对应变量的全月度数据；对于基底温度类变量，还包含所有深度的观测数据。需注意：并非所有变量均与遮蔽率或基底类型相关，具体包括天顶角、风速、太阳辐射，以及120厘米高度处的气温和相对湿度。