Future April 1 snow water equivalent (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.Snow residence time (in days) and April 1 snow water equivalent (in mm) were modeled using the spatial analog models of Luce et al., 2014 (https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2013WR014844); see also Lute and Luce, 2017 (https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2017WR020752). These models are built on precipitation and snow data from Snowpack Telemetry (SNOTEL) stations across the western United States and temperature data from the TopoWx dataset (https://rmets.onlinelibrary.wiley.com/doi/10.1002/joc.4127). They were calculated for the historical (1975-2005) and future (2071-2090) time periods, along with absolute and percent change.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）和可持续发展与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求，包括森林规划。该地图集采用最先进的科学方法，涵盖了美国所有连续森林区域的相关数据覆盖范围。目前，地图集包括与降水、空气温度、积雪（包括积雪停留时间和4月1日的积雪水当量）以及溪流流量相关的变量。积雪停留时间（以天数计）和4月1日的积雪水当量（以毫米计）是通过Luce等人于2014年提出的空间类比模型（https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2013WR014844）进行建模的；亦请参阅Lute和Luce于2017年的研究（https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2017WR020752）。这些模型基于美国西部积雪电信（SNOTEL）站点的降水和积雪数据以及TopoWx数据集（https://rmets.onlinelibrary.wiley.com/doi/10.1002/joc.4127）的温度数据构建。它们针对历史时期（1975-2005）和未来时期（2071-2090）进行了计算，并包括了绝对变化和百分比变化。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地图和详细的元数据（https://www.fs.usda.gov/rm/boise/AWAE/projects/NFS-regional-climate-change-maps/downloads/NationalForestClimateChangeMapsMetadata.pdf）。本记录来源于向https://data.gov目录提供数据的美国农业部企业数据目录。本记录的数据资源包括以下内容：ISO-19139元数据、ArcGIS Hub数据集、ArcGIS地理服务。欲获取完整信息，请访问https://data.gov。