relative_humidity_pct_1cm_sand_100_shade.zip

Relative humidity (%) 1 cm above the ground assuming a sand substrate and 100% 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.

假定以沙质基质为基底且植被完全遮阴时，距地面1厘米高度处的相对湿度（%）。每个NetCDF（网络通用数据格式）文件包含全球范围的24层数据，对应某一年中指定月份每日的24个小时（从0:00开始），空间分辨率约为15公里。

数据集说明：
microclim数据集基于长期平均气候态数据，提供每月中旬每日各时段的地表上下微气候条件估算结果。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，每个变量对应每月一个文件；每个文件包含全球范围的24层数据（对应每日0:00至23:00的24个小时，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°。
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代表遮阴率（单位为%，取值为0、25、50、75、90、100）；sub代表基质类型（soil为土壤，rock为岩石，sand为沙质）。
为便于数据下载，NetCDF文件按变量、遮阴类型与基质类型分组打包为压缩（ZIP）文件，每个压缩包包含对应变量的全月数据；对于基质温度类变量，还包含所有深度层的数据。
需注意，并非所有变量都与遮阴或基质类型相关，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。