Climate Simulation with CLM, Climate of the 20th Century run no.3, Data Stream 3: European region MPI-M/MaD

Project: CLM regional climate model runs forced by the global IPCC scenario runs - These regional climate simulations have been funded by the BMBF and computed at DKRZ by the group "Model and Data" of MPI-M, Hamburg, in close cooperation with BTU Cottbus, HZG Geesthacht and PIK Potsdam. Serving as community model, the climate version of the local model (CLM) of the DWD was used to simulate the regional climate of the 20th century (1960-2000) and 21st century (2001-2100) in Europe. The regional model runs are forced by the global IPCC scenario runs ( A1B and B1 ,http://www.grida.no/climate/ipcc/emission/index.htm ) with different assumptions regarding the development of global greenhouse gas concentrations to explore future developments in the European climate on a regional scale. CLM (see http://www.clm-community.eu/index.php?menuid=198 ) was run in non hydrostatic mode with 0.165 degree horizontal grid resolution and was forced 6 hourly by the output of the global climate model runs with ECHAM5/MPIOM. The climate of the 20th century was simulated by three 20th century realization runs, set off at different initialization times. For storage in and download from this data base, the data has been transformed into time series of single model variables and is provided in two data streams (referenced as "data stream 2" and "data stream 3"). Data stream 2 is given on a rotated grid with 0.165 deg. spatial resolution. Data stream 3 is projected onto a non-rotated grid with 0.2 deg. spatial resolution (usual geographical coordinates). For the data transformation between the respective grids the cdo-routines have been used. For further information regarding the original model output (referenced as "data stream 0" and "data stream 1") please contact model(at)dkrz.de. See http://sga.wdc-climate.de for more details on CLM simulations in the context of the BMBF funding priority "klimazwei", some useful information on handling climate model data and the data access regulations. Summary: The experiment CLM_C20_3_D3 contains European regional climate simulations of the years 1960-2000 on a regular geographical grid. The data are generated during post processing of the corresponding data stream 2 experiment (CLM_C20_3_D2) of regional climate model runs (CLM non hydrostatic, see http://www.clm-community.eu ). The simulations of the 20th century (1960-2000) have been forced by the third (_3_) run of the global 20th century climate (EH5-T63L31_OM-GR1.5L40_20C_3_6H) with observed anthropogenic forcing. In data stream 3 (_D3) the output variables of CLM data stream 2 and some additionally derived parameters are stored as time series on a regular grid with a horizontal spacing of 0.2 degree. The model parameters have been transformed onto the regular geographical grid by the CDO routines. Please note, that none of the variables has been corrected for topographical differences between the two grids. The model domain of data stream 3 covers the European region starting at 34.6/-10.6 (lat/lon, centre of lower left grid box) with an increment of 0.2 degree. The number of grid points is 177/238 (lat/lon). For some model variables and additionally derived parameters some statistics on daily, monthly or yearly basis are available. See also http://sga.wdc-climate.de for a list of available parameters. Please contact sga"at"dkrz.de for data request details. See http://sga.wdc-climate.de for more details on CLM simulations in the context of the BMBF funding priority "klimazwei", some useful information on handling climate model data and the data access regulations. The output format is netCDF Experiment with CLM 2.4.11 on NEC-SX6(hurrikan) raw data: hpss:/dxul/ut/k/k204095/prism/experiments/C20_3

项目：受全球政府间气候变化专门委员会（IPCC）情景试验驱动的CLM区域气候模式模拟——这些区域气候模拟项目由德国联邦教育与研究部（BMBF）资助，由汉堡马克斯·普朗克气象研究所（MPI-M）的"模型与数据"团队在德国气候计算中心（DKRZ）完成，合作方包括科特布斯勃兰登堡工业大学（BTU Cottbus）、盖斯塔赫特亥姆霍兹中心（HZG Geesthacht）以及波茨坦气候影响研究所（PIK Potsdam）。作为社区模式，德国气象局（DWD）的局地模式气候版本（CLM）被用于模拟欧洲地区20世纪（1960-2000年）与21世纪（2001-2100年）的区域气候。该区域模式试验由全球IPCC情景试验（A1B与B1，详见http://www.grida.no/climate/ipcc/emission/index.htm）驱动，这些情景试验针对全球温室气体浓度的发展设定了不同假设，旨在探究欧洲区域尺度上的未来气候演变。CLM（详见http://www.clm-community.eu/index.php?menuid=198）采用非静力模式运行，水平网格分辨率为0.165度，由ECHAM5/MPIOM全球气候模式的逐6小时输出结果驱动。20世纪气候模拟共开展3组初值不同的20世纪实现试验。为便于该数据库的存储与下载，原始数据已被转换为单模式变量的时间序列，并以两个数据流（分别记为"数据流2"与"数据流3"）提供。数据流2采用旋转网格，空间分辨率为0.165度。数据流3被投影至非旋转网格，空间分辨率为0.2度（采用标准地理坐标）。网格间的数据转换通过气候数据操作工具（CDO）完成。如需了解原始模式输出（记为"数据流0"与"数据流1"）的更多信息，请联系model(at)dkrz.de。详见http://sga.wdc-climate.de，可获取关于BMBF资助优先级"klimazwei"框架下CLM模拟的更多细节、气候模式数据处理的实用指南以及数据访问规则。摘要：本试验CLM_C20_3_D3包含1960-2000年欧洲区域气候模拟结果，采用标准地理网格。这些数据源于对应区域气候模式试验（CLM非静力模式，详见http://www.clm-community.eu）的数据流2试验（CLM_C20_3_D2）的后处理过程。20世纪（1960-2000年）模拟由第3组全球20世纪气候试验（EH5-T63L31_OM-GR1.5L40_20C_3_6H）驱动，该试验采用观测得到的人为强迫数据。在数据流3（_D3）中，CLM数据流2的输出变量与部分额外衍生参数被存储为时间序列，存储于水平间距为0.2度的标准网格上。模式参数已通过CDO工具转换至标准地理网格。请注意，未针对两个网格间的地形差异对任何变量进行校正。数据流3的模式域覆盖欧洲地区，左下角网格盒中心点坐标为34.6/-10.6（纬度/经度），网格增量为0.2度。网格点数为177/238（纬度/经度）。部分模式变量与额外衍生参数可获取日、月或年尺度的统计结果。详见http://sga.wdc-climate.de，可获取可用参数列表。如需数据申请详情，请联系sga"at"dkrz.de。再次详见http://sga.wdc-climate.de，可获取关于BMBF资助优先级"klimazwei"框架下CLM模拟的更多细节、气候模式数据处理的实用指南以及数据访问规则。输出格式为网络通用数据格式（netCDF）。NEC-SX6（hurrikan）平台上运行的CLM 2.4.11版本原始数据路径为：hpss:/dxul/ut/k/k204095/prism/experiments/C20_3