Absolute change in annual temperature (CONUS) (Image Service)

The National Forest Climate Change Maps project was developed by the Rocky Mountain Research Station (RMRS) and the Office of Sustainability and Climate to meet the needs of national forest managers for information on projected climate changes at a scale relevant to decision making processes, including forest plans. The maps use state-of-the-art science and are available for every national forest in the contiguous United States with relevant data coverage. Currently, the map sets include variables related to precipitation, air temperature, snow (including snow residence time and April 1 snow water equivalent), and stream flow.Historical (1975-2005) and future (2071-2090) precipitation and temperature data for the contiguous United States are ensemble mean values across 20 global climate models from the CMIP5 experiment (https://journals.ametsoc.org/doi/abs/10.1175/BAMS-D-11-00094.1), downscaled to a 4 km grid. For more information on the downscaling method and to access the data, please see Abatzoglou and Brown, 2012 (https://rmets.onlinelibrary.wiley.com/doi/full/10.1002/joc.2312) and the Northwest Knowledge Network (https://climate.northwestknowledge.net/MACA/). We used the MACAv2- Metdata monthly dataset; average temperature values were calculated as the mean of monthly minimum and maximum air temperature values (degrees C), averaged over the season of interest (annual, winter, or summer). Absolute change was then calculated between the historical and future time periods.Raster data are also available for download from RMRS site (https://www.fs.usda.gov/rm/boise/AWAE/projects/NFS-regional-climate-change-maps/categories/us-raster-layers.html), along with pdf maps and detailed metadata (https://www.fs.usda.gov/rm/boise/AWAE/projects/NFS-regional-climate-change-maps/downloads/NationalForestClimateChangeMapsMetadata.pdf).This record was taken from the USDA Enterprise Data Inventory that feeds into the https://data.gov catalog. Data for this record includes the following resources: ISO-19139 metadata ArcGIS Hub Dataset ArcGIS GeoService For complete information, please visit https://data.gov.

国家森林气候变化地图项目由落基山脉研究站（RMRS）与可持续发展和气候变化办公室共同开发，旨在满足国家森林管理者对决策过程中相关气候变化信息的需要，包括森林规划。该地图集采用最先进的科学方法，覆盖了美国所有连续森林区域的相关数据。目前，地图集包括与降水、气温、雪（包括雪停留时间和4月1日的雪水当量）以及河流流量相关的变量。美国连续地区的1975-2005年历史和2071-2090年未来降水和气温数据为CMIP5实验中20个全球气候模型的集成平均值，并下缩至4公里网格。有关下缩方法及数据获取信息，请参阅Abatzoglou和Brown（2012年）的研究（https://rmets.onlinelibrary.wiley.com/doi/full/10.1002/joc.2312）以及西北知识网络（https://climate.northwestknowledge.net/MACA/）。我们使用了MACAv2- Metadata月度数据集；平均温度值是通过计算月平均最低和最高气温值（摄氏度），在感兴趣的季节内（年度、冬季或夏季）进行平均而得。随后计算了历史时期与未来时期之间的绝对变化。栅格数据也可从RMRS网站（https://www.fs.usda.gov/rm/boise/AWAE/projects/NFS-regional-climate-change-maps/categories/us-raster-layers.html）下载，同时提供pdf地图和详细元数据（https://www.fs.usda.gov/rm/boise/AWAE/projects/NFS-regional-climate-change-maps/downloads/NationalForestClimateChangeMapsMetadata.pdf）。本记录来源于美国农业部企业数据目录，该目录为https://data.gov目录提供数据。本记录的数据包括以下资源：ISO-19139元数据、ArcGIS Hub数据集、ArcGIS GeoService。欲获取完整信息，请访问https://data.gov。