A Long-Term Micrometeorological and Hydrological Dataset Across an Elevation Gradient in Sagehen Creek, Sierra Nevada, California

We compile and release ~55 years of daily and ~20 years of hourly Micrometeorological and hydrological data from Sagehen Creek a 28 km???^2??? watershed with observation sites spanning 1771 to 2670 m. A USGS gauging station measures streamflow at the catchment outlet. There are three Snow Telemetry (SNOTEL) stations: Independence Camp(2128 m), Independence Creek (1962 m) and Independence Lake (2541 m) that measure hourly precipitation, temperature, soil moisture (at 5, 20, and 50 cm), as well as daily snow water equivalent (SWE) and snow depth. A new method was used to estimate hourly precipitation data using quality controlled daily totals. A NOAA cooperative observer (COOP) station measures daily precipitation, temperature, SWE, and snow depth from 1953-1997 and then measures hourly precipitation, temperature, SWE, and snow depth, relative humidity, and solar radiation from 2001 through 2017 2001-present. There are an additional three towers with data beginning in 2009 measuring snow depth, SWE, solar radiation, barometric pressure, precipitation, relative humidity, and temperature: Tower 1 (1934m), Tower 3 (2114 m), and Tower 4 (2350 m). Wind speed, temperature, and relative humidity measured at 7.6 and 30.5 m at each site. Data from all stations were checked for poor QA/QC and substantial and sophisticated gap-filling techniques were deployed. This dataset holds potential for improving understanding of orographic processes and their implications for streamflow generation in a groundwater-dominated watershed. This data package mirrors the one available at https://doi.org/10.5281/zenodo.2590799. Please check this link for updates and additional information.本数据集整理并发布了来自塞奇恩溪（Sagehen Creek）流域的微气象与水文观测数据：该流域面积为28平方千米，观测站点海拔跨度为1771米至2670米，涵盖约55年的日尺度数据集与约20年的小时尺度数据集。美国地质调查局（USGS）在该流域出口处设有测流站，用于监测径流量。流域内共建有3座雪情遥测站（Snow Telemetry, SNOTEL），分别为独立营地站（海拔2128米）、独立溪站（海拔1962米）与独立湖站（海拔2541米），可同步监测小时尺度降水、气温、5cm、20cm及50cm深度土壤含水率，以及日尺度雪水当量（Snow Water Equivalent, SWE）与积雪深度。研究团队采用经质量控制的日降水总量，通过创新方法估算得到小时尺度降水数据。美国国家海洋和大气管理局（NOAA）合作观测站（COOP）的观测序列如下：1953年至1997年期间采集日尺度降水、气温、雪水当量与积雪深度数据；2001年至今则新增采集小时尺度降水、气温、雪水当量、积雪深度、相对湿度与太阳辐射数据。另有3座观测塔自2009年起投入观测，可监测积雪深度、雪水当量、太阳辐射、大气压力、降水、相对湿度与气温，分别为1号塔（海拔1934米）、3号塔（海拔2114米）与4号塔（海拔2350米）。所有观测站点均在7.6米与30.5米高度处布设传感器，监测风速、气温与相对湿度。所有站点的原始数据均经过质量保障与质量控制（QA/QC）筛查，并采用成熟且精细化的间隙填补技术完成缺失值处理。本数据集可为深化山地地形降水过程的认知，及其在地下水主导型流域中对径流量形成的影响机制研究提供支撑。本数据包与https://doi.org/10.5281/zenodo.2590799链接处的公开数据集完全一致，如需获取更新内容与补充信息，请访问该链接。