SGP97 GCIP/NESOB-97 Sub-Surface: NOAA/Atmospheric Turbulence and Diffusion Division (ATDD) Little Washita 30 Minute Soil Temperature

The Southern Great Plains 1997 (SGP97) Hydrology Experiment originated from an interdisciplinary investigation, "Soil Moisture Mapping at Satellite Temporal and Spatial Scales" (PI: Thomas J. Jackson, USDA Agricultural Research Service, Beltsville, MD) selected under the NASA Research Announcement 95-MTPE-03. The National Oceanic and Atmospheric Administration (NOAA)/Atmospheric Turbulence and Diffusion Division (ATDD) Soil Temperature Dataset is one of several sub-surface datasets provided for the Global Energy and Water Cycle Experiment (GEWEX) Continental-Scale International Project (GCIP) Near Surface Observation Data Set (NESOB) 1997 project. This dataset contains data from one station, the Little Washita watershed long term flux site, within the NESOB 1997 domain (100.5W to 94.5W longitude and 34N to 39N latitude) and time period (01 April 1997 through 30 September 1997). Soil Temperature is sampled every 2 seconds with a datalogger and multiplexor (CR21x, Campbell Scientific, Inc.), and averages are computed every 30 minutes. A laptop computer retrieves the soil temperature data from the CR21X datalogger every 30 minutes and appends the data to an existing file. After midnight, the data are copied to separate files with a name, year, and calendar day header. The computer is equipped with a modem and cellular phone in order to retrieve the data and conduct occasional system checks. On average, data are retrieved from the laptop computers about once every two days. The NOAA/ATDD Soil Temperature Dataset contains eight metadata parameters and eighteen data parameters and flags. The metadata parameters describe the date, time, network, station and location at which the data were collected. Data values are valid for the 30 minutes preceding the time of observation, and all times are UTC. The data parameters consist of triplets for each depth. Resources in this dataset:Resource Title: GeoData catalog record. File Name: Web Page, url: https://geodata.nal.usda.gov/geonetwork/srv/eng/catalog.search#/metadata/SGP97NESOB_NOAAsoiltemp_jjm_2015-05-04_1245

南大平原1997年（SGP97）水文实验源于一项跨学科研究，即“卫星时空尺度下的土壤湿度映射”（负责人：托马斯·J·杰克逊，美国农业部农业研究服务局，马里兰州贝塞斯达），该项目是在NASA研究公告95-MTPE-03下选定的。美国国家海洋和大气管理局（NOAA）/大气湍流和扩散部门（ATDD）土壤温度数据集是针对全球能量和水循环实验（GEWEX）大陆尺度国际项目（GCIP）近地表观测数据集（NESOB）1997项目提供的多个地下数据集之一。该数据集包含位于NESOB 1997域（经度100.5W至94.5W，纬度34N至39N）和时间段（1997年4月1日至1997年9月30日）内一个站点，即Little Washita流域长期通量站点的数据。土壤温度以每2秒一次的频率由数据记录器和多路复用器（CR21x，Campbell Scientific，Inc.）采样，并每30分钟计算平均值。一台笔记本电脑每30分钟从CR21X数据记录器中检索土壤温度数据，并将其附加到现有文件中。午夜过后，数据被复制到带有名称、年份和日历日标题的单独文件中。计算机配备有调制解调器和移动电话，以便检索数据和进行偶尔的系统检查。平均而言，大约每两天从笔记本电脑中检索一次数据。NOAA/ATDD土壤温度数据集包含八个元数据参数和十八个数据参数及标志。元数据参数描述了收集数据的日期、时间、网络、站点和位置。数据值有效于观测时间前30分钟，所有时间均为协调世界时。数据参数由每个深度的三元组组成。本数据集的资源包括：资源标题：GeoData目录记录。文件名：网页，URL：https://geodata.nal.usda.gov/geonetwork/srv/eng/catalog.search#/metadata/SGP97NESOB_NOAAsoiltemp_jjm_2015-05-04_1245