Daymet: Daily Surface Weather Data on a 1-km Grid for North America, Version 2-猫眼课题宝

DOI：

10.3334/ornldaac/1219

发表时间：

2014

期刊：

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其他

文献类型：

作者：

P. Thornton;M. Thornton;Ben Mayer;N. Wilhelmi;Yaxing Wei;R. Devarakonda;R. Cook

更多信息：http://daymet.ornl.gov演示者：Ranjeet Devarakonda环境科学部橡树岭国家实验室（ORNL）Daymet：每日地面天气数据和气候摘要提供了北美每日天气参数的网格估计，包括每日最低和最高温度，降水发生和数量，湿度，短波辐射，雪水当量和日长的连续表面。当前数据产品（第2版）涵盖1980年1月1日至2013年12月31日[1]。之前的产品（版本1）仅涵盖1980-2008年。在气象站密度允许的情况下，可用兰伯特共形圆锥投影中1公里x1公里空间分辨率的每日时间步长数据，其空间范围涵盖美国、墨西哥和加拿大南部的接壤地区。Daymet数据可从1）ORNL分布式活动归档中心（DAAC）搜索和订购工具（http：//www.example.com）下载daac.ornl.gov/cgi-bin/cart/add2cart.pl? add=1219）或直接从DAAC FTP站点（http：daac.ornl.gov/cgi-bin/dsviewer.pl? ds_id=1219）和2）单像素工具[2]和THREDDS（专题实时环境数据服务）数据服务器[3]。单像素数据提取工具允许用户输入一个单一的地理点的纬度和经度的十进制度。执行一个例程，将（lon，lat）坐标转换为投影的Daymet（x，y）坐标。Thesemore »坐标用于访问Daymet数据库的每日插值表面天气变量。从数据库中提取最近的1 km x 1 km Daymet网格单元的每日数据，并将其格式化为一个表格，每个Daymet变量有一列，每天有一行。所选年份的所有每日数据都以单个（长）表的形式返回，格式设置为在浏览器窗口中显示。在这个表格的顶部是一个链接，以简单的逗号分隔的文本格式，适合导入到电子表格或其他数据分析软件相同的数据。单像素数据提取工具还提供了以编程方式下载多个坐标的选项。可以在http://daymet.ornl.gov/files/daymet.zip免费下载多提取器脚本。ORNL DAAC的THREDDS数据服务器（TDS）提供定制的可视化和访问北美马赛克的Daymet时间序列。用户可以通过各种社区标准（包括OPeNDAP、NetCDF子集服务和开放地理空间联盟（OGC）Web地图/覆盖服务）对Daymet数据进行子集和下载。ORNL DAAC TDS还通过其ncISO服务公开Daymet元数据，以便于将Daymet元数据记录收集到第三方目录中。参考文献：[1] Thornton，P.E.，M.M.桑顿，B.W. Mayer，N. Wilhelmi，Y.韦河，巴西-地Devarakonda和R.B.厨师. 2014. Daymet：北美1公里网格上的每日地面天气数据，版本2。数据集。可从美国田纳西州橡树岭的橡树岭国家实验室分布式活动档案中心在线[http://daac.ornl.gov]获得。[2]Devarakonda河，等，2012年。Daymet：单像素数据提取工具。可上网查阅[http：//daymet.ornl.go/singlepixel.html]。[3]魏Y，等，2014年。Daymet：专题实时环境数据服务。可上网查阅[http：//daymet.ornl.gov/thredds_tiles.html]。«少

More information: http://daymet.ornl.gov Presenter: Ranjeet Devarakonda Environmental Sciences Division Oak Ridge National Laboratory (ORNL) Daymet: Daily Surface Weather Data and Climatological Summaries provides gridded estimates of daily weather parameters for North America, including daily continuous surfaces of minimum and maximum temperature, precipitation occurrence and amount, humidity, shortwave radiation, snow water equivalent, and day length. The current data product (Version 2) covers the period January 1, 1980 to December 31, 2013 [1]. The prior product (Version 1) only covered from 1980-2008. Data are available on a daily time step at a 1-km x 1-km spatial resolution in Lambert Conformal Conic projection with a spatial extent that covers the conterminous United States, Mexico, and Southern Canada as meteorological station density allows. Daymet data can be downloaded from 1) the ORNL Distributed Active Archive Center (DAAC) search and order tools (http://daac.ornl.gov/cgi-bin/cart/add2cart.pl?add=1219) or directly from the DAAC FTP site (http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=1219) and 2) the Single Pixel Tool [2] and THREDDS (Thematic Real-time Environmental Data Services) Data Server [3]. The Single Pixel Data Extraction Tool allows users to enter a single geographic point by latitude and longitude in decimal degrees. A routine is executed that translates the (lon, lat) coordinates into projected Daymet (x,y) coordinates. Thesemore » coordinates are used to access the Daymet database of daily-interpolated surface weather variables. Daily data from the nearest 1 km x 1 km Daymet grid cell are extracted from the database and formatted as a table with one column for each Daymet variable and one row for each day. All daily data for selected years are returned as a single (long) table, formatted for display in the browser window. At the top of this table is a link to the same data in a simple comma-separated text format, suitable for import into a spreadsheet or other data analysis software. The Single Pixel Data Extraction Tool also provides the option to download multiple coordinates programmatically. A multiple extractor script is freely available to download at http://daymet.ornl.gov/files/daymet.zip. The ORNL DAAC s THREDDS data server (TDS) provides customized visualization and access to Daymet time series of North American mosaics. Users can subset and download Daymet data via a variety of community standards, including OPeNDAP, NetCDF Subset service, and Open Geospatial Consortium (OGC) Web Map/Coverage Service. The ORNL DAAC TDS also exposes Daymet metadata through its ncISO service to facilitate harvesting Daymet metadata records into 3rd party catalogs. References: [1] Thornton, P.E., M.M. Thornton, B.W. Mayer, N. Wilhelmi, Y. Wei, R. Devarakonda, and R.B. Cook. 2014. Daymet: Daily Surface Weather Data on a 1-km Grid for North America, Version 2. Data set. Available on-line [http://daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, USA. [2] Devarakonda R., et al. 2012. Daymet: Single Pixel Data Extraction Tool. Available on-line [http://daymet.ornl.go/singlepixel.html]. [3] Wei Y., et al. 2014. Daymet: Thematic Real-time Environmental Data Services. Available on-line [http://daymet.ornl.gov/thredds_tiles.html].« less

Daymet: Daily Surface Weather Data on a 1-km Grid for North America, Version 2

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