ORCA1 - Twanoh: L3 Depth Gridded Data - 0.25 meter

The Northwest Environmental Moorings program maintains
a number of buoys thoughout the Puget Sound region, taking regular profiling
casts with a winched CTD attached to a fixed mooring. These profiles measure
water pressure, water temperature, and conductivity. Depending on the mooring
configuration, additional instruments are added to take further measurements,
which can include dissolved oxygen, nitrate concentrations, fluoroescence
(a proxy measurement for chlorophyll concentrations), and turbidity.

This data has converted raw profiles into a gridded data product. Data from the downcast (i.e., from surface to maximum depth) is extracted, and used to grid each variable to pre-defined pressure levels. Quality control flags are used to improve gridded data quality. Bad data is removed during gridding, while suspect data is flagged. Using the pressure-gridded data, corresponding hydrostatic depths are calculated. From these hydrostatic depths, the data is then interpolated onto fixed depth levels.

This dataset has historical data, and adds new data shortly after any additional casts
have been performed. Data quality delay is usually less than 6 hrs.
_NCProperties=version=2,netcdf=4.9.0,hdf5=1.12.2
author=Seth Travis
buoy_designation=ORCA1
buoy_latitude=47.375 degrees N
buoy_longitude=-123.00833333 degrees E
buoy_name=Twanoh
buoy_reference_number=1
cdm_data_type=TimeSeriesProfile
cdm_profile_variables=cast_num
cdm_timeseries_variables=buoy_name, latitude, longitude
citation=University of Washington NWEM Mooring Data, 2005-2024; https://nwem.apl.washington.edu/, enabled by the Northwest Association of Networked Ocean Observing Systems (NANOOS, https://www.nanoos.org) and the Washington State Ocean Acidification Center (WOAC, https://oceanacidification.uw.edu/)
contact=[e-mail]
contributor_email=[e-mail], [e-mail], [e-mail]
contributor_name=Seth Travis, John Mickett, Dana Manalang
contributor_role=author, principalInvestigator, principalInvestigator
contributor_role_vocabulary=https://vocab.nerc.ac.uk/collection/G04/current/
contributor_url=https://nwem.apl.washington.edu/, https//www.nanoos.org/, https://nwem.apl.washington.edu/
conventions=IOOS Parameter Vocabulary v2.0 (https://mmisw.org/ont/ioos/parameter)
create_state=WA
defaultDataQuery=sea_water_temperature[last-30:last][0:last],sea_water_practical_salinity[last-30:last][0:last],sea_water_sigma_theta[last-30:last][0:last],mass_concentration_of_oxygen_in_sea_water[last-30:last][0:last]
defaultGraphQuery=sea_water_temperature[last-30:last][0:last]&.draw=surface&.vars=cast_start_time|depth|sea_water_temperature&.yRange=0|35|false
description=ORCA Buoy L3 Depth-gridded Data for Twanoh
featureType=TimeSeriesProfile
geospation_vertical_positive=down
gts_ingest=false
history=2024-Nov-13 16:33:11: Generate depth-gridded data
2024-Nov-13 12:42:58: Generate depth-gridded data
2024-Nov-12 12:42:00: Generate depth-gridded data
2024-Nov-11 12:41:56: Generate depth-gridded data
2024-Nov-10 12:42:14: Generate depth-gridded data
2024-Nov-09 12:42:02: Generate depth-gridded data
2024-Nov-08 12:41:27: Generate depth-gridded data
2024-Nov-08 00:41:45: Generate depth-gridded data
2024-Nov-07 14:15:03: Generate depth-gridded data
2024-Nov-07 14:01:37: Generate depth-gridded data
infoUrl=???
institution=Northwest Environmental Moorings Group at University of Washington - Applied Physical Laboratory
keywords_vocabulary=GCMD Science Keywords
modification_date=2024-Nov-13 16:33:11
reference=UNESCO 1983 - Algorithms for computation of fundamental properties of seawater; https://unesdoc.unesco.org/ark:/48223/pf0000059832_eng
sourceUrl=(local files)
standard_name_vocabulary=CF Standard Name Table v70
water_depth=35 meters
wmo_platform_code=46123

西北环境锚泊计划在普吉特湾地区维护着若干浮标，通过固定锚泊并连接有绞车式CTD（海水温度、盐度、深度测量仪）进行定期的剖面测量。这些剖面数据测量了水压、水温、电导率。根据锚泊配置的不同，可能还会增加额外的仪器以进行进一步的测量，包括溶解氧、硝酸盐浓度、荧光（作为叶绿素浓度替代指标）和浊度。该数据集将原始剖面数据转换成网格化数据产品。下潜数据（即从水面至最大深度）被提取出来，并用于将每个变量网格化到预先定义的压力级别。通过质量控制标志来提升网格化数据的质量。在网格化过程中，不良数据被移除，而可疑数据则被标记。利用压力网格化数据，计算相应的静力深度。基于这些静力深度，数据随后被插值到固定的深度层级。该数据集包含历史数据，并在进行任何额外抛射后不久添加新的数据。数据质量延迟通常不超过6小时。