Limnological data from nearly 400 lakes across the Americas and New Zealand with a focus on vertical profiles of temperature, UV radiation, and optical properties

Two and a half decades of limnological data have been collected from nearly 400 lakes, encompassing a wide range of systems and a broad range of geography. This data set comprises one of the largest and most complete sets of measurements of underwater ultraviolet (UV) transparency available in the world. The data include a suite of 36 variables, with a focus on the optical characteristics. Lakes range from pristine natural lakes to manmade reservoirs. The systems represented in this data set are largely located in North America, from the northeastern United States to Alaska, and alpine and subalpine lakes in the Rocky Mountains of the United States and Canada. Lakes included range from iconic Lake Tahoe, and Castle Lake in northern California, to lakes in the South American Patagonian region, as well as New Zealand. Data were most often collected during the summer, and in some lakes span multiple years (with year-round data since 2006 in Lake Tahoe). The data here are contained in four files, including LakeData.csv, SiteInformation.csv, Methods.csv, and Variables.csv. The main data are in LakeData.csv. SiteInformation.csv, Methods.csv, and Variables.csv support the main data file with descriptions of the sampling sites, methods by which samples were processed, and descriptions of the variables that were measured, respectively. This data set complements the site-intensive limnological data that we published in EDI on 30+ years of data from 3 lakes in the Poconos Mountains region of Pennsylvania, USA. This complementary data set can be accessed at https://portal.edirepository.org/nis/mapbrowse?scope=edi&identifier=186研究团队已从近400座湖泊中收集了长达25年的湖沼学（limnology）观测数据，涵盖多样的湖泊生态系统与广泛的地理分布范畴。本数据集是全球范围内规模最大、数据完整性最优的水下紫外线（UV）透明度实测数据集之一。该数据集包含36项观测变量，核心聚焦于湖泊光学特征，收录的湖泊类型覆盖从原始自然湖泊到人工水库的全谱系。本数据集所涵盖的湖泊主要分布于北美地区，从美国东北部延伸至阿拉斯加，同时包含美国与加拿大落基山脉区域的高山及亚高山湖泊；收录的湖泊包括知名的太浩湖（Lake Tahoe）与美国加利福尼亚州北部的卡斯尔湖（Castle Lake），同时覆盖南美巴塔哥尼亚地区与新西兰的湖泊。数据采集时段多集中于夏季，部分湖泊的观测数据跨度达多年，其中太浩湖自2006年起便拥有全年连续观测序列。本次发布的数据包含四个文件，分别为LakeData.csv、SiteInformation.csv、Methods.csv与Variables.csv。核心数据存储于LakeData.csv中，其余三个文件分别为核心数据提供采样位点说明、样品处理流程说明以及观测变量释义。本数据集与我们此前发表于EDI平台的另一项湖沼学观测数据形成互补：后者基于美国宾夕法尼亚州波科诺山区3座湖泊的30余年观测数据，采样位点较为密集。该互补数据集的访问链接为：https://portal.edirepository.org/nis/mapbrowse?scope=edi&identifier=186