International Climate Benchmarks and Input Parameters for a Stochastic Weather Generator, CLIGEN

This dataset represents CLIGEN input parameters for locations in 68 countries. CLIGEN is a point-scale stochastic weather generator that produces long-term weather simulations with daily output. The input parameters are essentially monthly climate statistics that also serve as climate benchmarks. Three unique input parameter sets are differentiated by having been produced from 30-year, 20-year and 10-year minimum record lengths that correspond to 7673, 2336, and 2694 stations, respectively. The primary source of data is the NOAA GHCN-Daily dataset, and due to data gaps, records longer than the three minimum record lengths were often queried to produce the needed number of complete monthly records. The vast majority of stations used at least some data from the 2000's, and temporal coverages are shown in the Excel table for each station. CLIGEN has various applications including being used to force soil erosion models. This dataset may reduce the effort needed in preparing climate inputs for such applications.

Revised input files added on 11/16/20. These files were revised from the original dataset. Fixed metadata issues with the headings of each file. Fixed inconsistencies with MX.5P and transition probability values for extremely dry climates and/or months.

Second revision input files added on 2/12/20. A formatting error was fixed that affected transition probabilities for 238 stations with zero recorded precipitation for one or more months. The affected stations were predominantly in Australia and Mexico.

Resources in this dataset:
Resource Title: 30-year input files.
File Name: 30-year.zip
Resource Description: CLIGEN .par input files based on 30-year minimum record lengths. May be viewed with text editor.
Resource Software Recommended: CLIGEN v5.3,url: https://www.ars.usda.gov/midwest-area/west-lafayette-in/national-soil-erosion-research/docs/wepp/cligen/

Resource Title: 20-year input files.
File Name: 20-year.zip
Resource Description: CLIGEN .par input files based on 20-year minimum record lengths. May be viewed with text editor.
Resource Software Recommended: CLIGEN v5.3,url: https://www.ars.usda.gov/midwest-area/west-lafayette-in/national-soil-erosion-research/docs/wepp/cligen/

Resource Title: 10-year input files.
File Name: 10-year.zip
Resource Description: CLIGEN .par input files based on 10-year minimum record lengths. May be viewed with text editor.
Resource Software Recommended: CLIGEN v5.3,url: https://www.ars.usda.gov/midwest-area/west-lafayette-in/national-soil-erosion-research/docs/wepp/cligen/

Resource Title: Map Layer.
File Name: MapLayer.kmz
Resource Description: Map Layer showing locations of the new CLIGEN stations. This layer may be imported into Google Earth and used to find the station closest to an area of interest.
Resource Software Recommended: Google Earth,url: https://www.google.com/earth/

Resource Title: Temporal Ranges of Years Queried.
File Name: GHCN-Daily Year Ranges.xlsx
Resource Description: Excel tables of the first and last years queried from GHCN-Daily when searching for complete monthly records (with no gaps in data). Any ranges in excess of 30 years, 20 years and 10 years, for respective datasets, are due to data gaps.

Resource Title: 30-year input files (revised).
File Name: 30-year revised.zip
Resource Description: CLIGEN .par input files based on 30-year minimum record lengths. May be viewed with text editor. Revised from the original dataset. Fixed metadata issues with the headings of each file. Fixed inconsistencies with MX.5P and transition probability values for extremely dry climates and/or months.
Resource Software Recommended: CLIGEN v5.3,url: https://www.ars.usda.gov/midwest-area/west-lafayette-in/national-soil-erosion-research/docs/wepp/cligen/

Resource Title: 20-year input files (revised).
File Name: 20-year revised.zip
Resource Description: CLIGEN .par input files based on 20-year minimum record lengths. May be viewed with text editor. Revised from the original dataset. Fixed metadata issues with the headings of each file. Fixed inconsistencies with MX.5P and transition probability values for extremely dry climates and/or months.
Resource Software Recommended: Cligen v5.3,url: https://www.ars.usda.gov/midwest-area/west-lafayette-in/national-soil-erosion-research/docs/wepp/cligen/

Resource Title: 10-year input files (revised).
File Name: 10-year revised.zip
Resource Description: CLIGEN .par input files based on 10-year minimum record lengths. May be viewed with text editor. Revised from the original dataset. Fixed metadata issues with the headings of each file. Fixed inconsistencies with MX.5P and transition probability values for extremely dry climates and/or months.
Resource Software Recommended: Cligen v5.3,url: https://www.ars.usda.gov/midwest-area/west-lafayette-in/national-soil-erosion-research/docs/wepp/cligen/

Resource Title: 30-year input files (revised 2).
File Name: 30-year revised 2.zip
Resource Description: CLIGEN .par input files based on 30-year minimum record lengths. May be viewed with text editor. Fixed formatting issue for 238 stations that affected transition probabilities.
Resource Software Recommended: Cligen v5.3,url: https://www.ars.usda.gov/midwest-area/west-lafayette-in/national-soil-erosion-research/docs/wepp/cligen/

Resource Title: 20-year input files (revised 2).
File Name: 20-year revised 2.zip
Resource Description: CLIGEN .par input files based on 20-year minimum record lengths. May be viewed with text editor. Fixed formatting issue for 238 stations that affected transition probabilities.
Resource Software Recommended: Cligen v5.3,url: https://www.ars.usda.gov/midwest-area/west-lafayette-in/national-soil-erosion-research/docs/wepp/cligen/

Resource Title: 10-year input files (revised 2).
File Name: 10-year revised 2.zip
Resource Description: CLIGEN *.par input files based on 10-year minimum record lengths. May be viewed with text editor. Fixed formatting issue for 238 stations that affected transition probabilities.
Resource Software Recommended: Cligen v5.3,url: https://www.ars.usda.gov/midwest-area/west-lafayette-in/national-soil-erosion-research/docs/wepp/cligen/

本数据集涵盖全球68个国家各站点的CLIGEN（随机天气生成器）输入参数。CLIGEN是一种点尺度随机天气生成器，可生成长期逐日天气模拟结果。其输入参数本质为月度气候统计量，同时可作为气候基准值。本数据集依据最小观测记录时长，构建了三套独立的输入参数集：基于30年最小记录时长的参数集涵盖7673个站点，基于20年的对应2336个站点，基于10年的对应2694个站点。
本数据集的核心数据源为美国国家海洋和大气管理局（NOAA）的GHCN-Daily（每日全球历史气候学网络）数据集。由于存在数据缺失，为获取足够数量的完整月度记录，实际调用的观测记录时长往往超过上述三类最小记录阈值。绝大多数站点至少使用了2000年代的部分观测数据，各站点的时间覆盖范围详见各站点对应的Excel表格。
CLIGEN具有广泛应用场景，其中包括为土壤侵蚀模型提供气象强迫数据。本数据集可有效降低此类应用中气候输入文件的准备工作量。

2020年11月16日，本数据集新增了修订版输入文件。该版文件基于原始数据集修订完成，修复了各文件元数据的标题问题，并修正了MX.5P参数以及极端干旱气候/月份的转移概率值不一致问题。
2020年2月12日，本数据集新增了第二次修订版输入文件。本次修订修复了影响238个站点的转移概率格式错误，这些站点存在一个或多个月的零降水记录，受影响站点主要分布在澳大利亚与墨西哥。

本数据集包含以下资源：
1. 资源标题：30年输入文件
文件名：30-year.zip
资源描述：基于30年最小记录时长生成的CLIGEN .par格式输入文件，可通过文本编辑器查看。
推荐使用软件：CLIGEN v5.3，链接：https://www.ars.usda.gov/midwest-area/west-lafayette-in/national-soil-erosion-research/docs/wepp/cligen/

2. 资源标题：20年输入文件
文件名：20-year.zip
资源描述：基于20年最小记录时长生成的CLIGEN .par格式输入文件，可通过文本编辑器查看。
推荐使用软件：CLIGEN v5.3，链接：https://www.ars.usda.gov/midwest-area/west-lafayette-in/national-soil-erosion-research/docs/wepp/cligen/

3. 资源标题：10年输入文件
文件名：10-year.zip
资源描述：基于10年最小记录时长生成的CLIGEN .par格式输入文件，可通过文本编辑器查看。
推荐使用软件：CLIGEN v5.3，链接：https://www.ars.usda.gov/midwest-area/west-lafayette-in/national-soil-erosion-research/docs/wepp/cligen/

4. 资源标题：地图图层
文件名：MapLayer.kmz
资源描述：用于展示新增CLIGEN站点位置的地图图层，可导入至Google Earth中，用于查找目标区域附近的气象站点。
推荐使用软件：Google Earth，链接：https://www.google.com/earth/

5. 资源标题：查询年份范围
文件名：GHCN-Daily Year Ranges.xlsx
资源描述：包含从GHCN-Daily数据源中查询得到的完整月度记录（无数据缺失）的首末年份Excel表格。对应数据集若存在超过30年、20年、10年的时间范围，均为数据缺失导致的额外查询结果。

6. 资源标题：30年输入文件（修订版）
文件名：30-year revised.zip
资源描述：基于30年最小记录时长生成的CLIGEN .par格式输入文件，可通过文本编辑器查看。本文件基于原始数据集修订，修复了各文件元数据的标题问题，并修正了MX.5P参数以及极端干旱气候/月份的转移概率值不一致问题。
推荐使用软件：CLIGEN v5.3，链接：https://www.ars.usda.gov/midwest-area/west-lafayette-in/national-soil-erosion-research/docs/wepp/cligen/

7. 资源标题：20年输入文件（修订版）
文件名：20-year revised.zip
资源描述：基于20年最小记录时长生成的CLIGEN .par格式输入文件，可通过文本编辑器查看。本文件基于原始数据集修订，修复了各文件元数据的标题问题，并修正了MX.5P参数以及极端干旱气候/月份的转移概率值不一致问题。
推荐使用软件：CLIGEN v5.3，链接：https://www.ars.usda.gov/midwest-area/west-lafayette-in/national-soil-erosion-research/docs/wepp/cligen/

8. 资源标题：10年输入文件（修订版）
文件名：10-year revised.zip
资源描述：基于10年最小记录时长生成的CLIGEN .par格式输入文件，可通过文本编辑器查看。本文件基于原始数据集修订，修复了各文件元数据的标题问题，并修正了MX.5P参数以及极端干旱气候/月份的转移概率值不一致问题。
推荐使用软件：CLIGEN v5.3，链接：https://www.ars.usda.gov/midwest-area/west-lafayette-in/national-soil-erosion-research/docs/wepp/cligen/

9. 资源标题：30年输入文件（第二次修订版）
文件名：30-year revised 2.zip
资源描述：基于30年最小记录时长生成的CLIGEN .par格式输入文件，可通过文本编辑器查看。本次修订修复了影响238个站点的转移概率格式错误。
推荐使用软件：CLIGEN v5.3，链接：https://www.ars.usda.gov/midwest-area/west-lafayette-in/national-soil-erosion-research/docs/wepp/cligen/

10. 资源标题：20年输入文件（第二次修订版）
文件名：20-year revised 2.zip
资源描述：基于20年最小记录时长生成的CLIGEN .par格式输入文件，可通过文本编辑器查看。本次修订修复了影响238个站点的转移概率格式错误。
推荐使用软件：CLIGEN v5.3，链接：https://www.ars.usda.gov/midwest-area/west-lafayette-in/national-soil-erosion-research/docs/wepp/cligen/

11. 资源标题：10年输入文件（第二次修订版）
文件名：10-year revised 2.zip
资源描述：基于10年最小记录时长生成的CLIGEN .par格式输入文件，可通过文本编辑器查看。本次修订修复了影响238个站点的转移概率格式错误。
推荐使用软件：CLIGEN v5.3，链接：https://www.ars.usda.gov/midwest-area/west-lafayette-in/national-soil-erosion-research/docs/wepp/cligen/