ENSEMBLES EGMAM 20C3M run2, daily values

These data represent daily values (daily mean, instantaneous daily output, diurnal cycle) of selected variables for ENSEMBLES (http://www.ensembles-eu.org). The list of output variables can be found in: http://ensembles.wdc-climate.de/output-variables. The model output was prepared for the IPCC Fourth Assessment climate of the 20th Century experiment (20C3M).

The 20th century simulation (1860-2000) is initialized in year 157 of the preindustrial control run (1860 conditions) and forced with changes of greenhouse gas concentartions (CO2, CH4, N2O, CFC-11* and CFC-12; time histories of GHGs concentrations from ENSEMBLES project: http://www.cnrm.meteo.fr/ensembles/public/data).

The datasets are available in netCDF format.
The dataset names are composed of
- centre/model acronym (FUBEMA: Freie Universitaet Berlin / EGMAM (=ECHO-G with Middle Atmosphere and Messy))
- scenario acronym (20C3M)
- run number (1: run 1)
- time interval (MM:monthly mean, DM:daily mean, DC:diurnal cycle, 6H:6 hourly, 12h:12hourly)
- variable acronym [with level value] (e.g. hur850: relative humidity, 850 hPa)
--> example: FUBEMA_20C3M_1_MM_hur850

For this experiment 3 ensemble runs were carried out.

For model output data in higher temporal resolution and more variables contact Falk Niehoerster.

Technical data to this experiment:
The experiment used AGCM MA/ECHAM4 (T30L39) coupled to OGCM HOPE-G (T42 with equator refinement, L20), and was run on a NEC SX-6 (hurrikan.dkrz.de).

本数据集呈现了ENSEMBLES项目（http://www.ensembles-eu.org）中选取变量的每日值（每日平均值、瞬时每日输出、日变化周期）。输出变量的列表可查阅：http://ensembles.wdc-climate.de/output-variables。模型输出是为IPCC第四次评估报告中的20世纪气候实验（20C3M）所准备。20世纪的模拟（1860-2000年）以工业化前控制运行的157年（1860年条件）初始化，并受到温室气体浓度变化的影响（CO2、CH4、N2O、CFC-11* 和 CFC-12；来自ENSEMBLES项目的温室气体浓度时间序列：http://www.cnrm.meteo.fr/ensembles/public/data）。数据集以netCDF格式提供。数据集名称由以下部分组成：- 中心/模型缩写（FUBEMA：柏林自由大学 / EGMAM（=ECHO-G with Middle Atmosphere and Messy））- 情景缩写（20C3M）- 运行编号（1：运行1）- 时间间隔（MM：月平均值，DM：日平均值，DC：日变化，6H：6小时，12h：12小时）- 变量缩写[含层级值]（例如：hur850：相对湿度，850 hPa）---> 示例：FUBEMA_20C3M_1_MM_hur850。针对本实验，进行了3次集合运行。如需更高时间分辨率和更多变量的模型输出数据，请联系Falk Niehoerster。关于本实验的技术数据：实验使用了耦合的AGCM MA/ECHAM4（T30L39）和OGCM HOPE-G（T42带赤道细化，L20），在NEC SX-6（hurrikan.dkrz.de）上运行。