NLDAS Noah Land Surface Model L4 Monthly Climatology 0.125 x 0.125 degree V002 (NLDAS_NOAH0125_MC) at GES DISC

This monthly climatology data set contains a series of land surface parameters simulated from the Noah land-surface model (LSM) for Phase 2 of the North American Land Data Assimilation System (NLDAS-2). The data are in 1/8th degree grid spacing. The temporal resolution is monthly, ranging from January to December. The NLDAS-2 monthly climatology data are the monthly data averaged over the thirty years (1980 - 2009) of the NLDAS-2 monthly data. The file format is WMO GRIB-1.

A brief description about the NLDAS-2 hourly and monthly Noah LSM data can be found from the dataset landing pages for NLDAS_NOAH0125_H_002 and NLDAS_NOAH0125_M_002, and the NLDAS-2 README document.

Details about the NLDAS-2 configuration of the Noah LSM can be found in Xia et al. (2012).

The NLDAS-2 Noah monthly climatology data contain fifty-two fields. The data set applies a user-defined parameter table to indicate the contents and parameter number. The GRIBTAB file shows a list of parameters for this data set, along with their Product Definition Section (PDS) IDs and units.

There are four vertical levels for the Soil Moisture Content (PDS 086) and Soil Temperature (PDS 085) in the Noah GRIB files. For more information, please see the README Document or the GrADS ctl file.

本月度气候数据集收录了针对北美陆地数据同化系统第二阶段（NLDAS-2）所构建的Noah陆地表面模型（LSM）模拟的一系列陆地表面参数。数据以1/8度网格间距进行排列。时间分辨率以月为单位，涵盖从一月至十二月的全年范围。NLDAS-2月度气候数据集由NLDAS-2月度数据自1980年至2009年三十年间月度数据的平均值构成。数据文件格式遵循世界气象组织GRIB-1规范。

关于NLDAS-2每小时及月度Noah LSM数据的基本描述，可查阅NLDAS_NOAH0125_H_002和NLDAS_NOAH0125_M_002数据集的着陆页面，以及NLDAS-2的README文档。

Noah LSM的NLDAS-2配置细节可参考Xia等（2012）的研究。

NLDAS-2 Noah月度气候数据集包含五十二个字段。数据集应用用户定义的参数表来标示数据内容及其编号。GRIBTAB文件展示了该数据集参数列表，包括其产品定义部分（PDS）标识符及单位。

Noah GRIB文件中，土壤湿度含量（PDS 086）和土壤温度（PDS 085）各有四个垂直层级。欲获取更多信息，请参阅README文档或GrADS ctl文件。