********************* Global Attributes: ********************* CREATION_DATE = ’24-Mar-2021’ UPDATE_DATE = '27-May-2022' creator_name = 'A. Kirincich and E. Cinquino' creator_email = 'akirincich@whoi.edu and ecinquino@whoi.edu' naming_authority = 'edu.whoi.mvco' EXPERIMENT = ‘MetOcean Data Initiative 2016-2021' Abstract = 'This data was collected by Kirincich and Cinquino as part of a Metocean monitoring campaign sponsored initially by the Massachusetts Clean Energy Center (MassCEC) and presently by the National Offshore Wind Research and Development Consortium (NOWRDC). The campaign was designed to observe key atmospheric and ocean parameters at an existing offshore platform in the proximity of the Massachusetts and Rhode Island Wind Energy Areas. The campaign supported the purchase and installation of a LIDAR wind profiler, two cup anemometers and a wind direction vane at the MVCO Air-Sea Interaction Tower (ASIT). These instruments were installed and operated by WHOI and validated by UL-AWS Truepower following a MetOcean Measurement Plan created by UL-AWST, WHOI, and the MassCEC. All instruments were installed on WHOI's offshore tower in the fall of 2016 and operated continuously, as possible, through the end of 2020. After this time the project transitioned to become the MetOcean Reference Site (MORS-1), supported by the National Offshore Wind Research and Development Consortium (NOWRDC). In fall 2021, a second UL-AWS Truepower validated LIDAR wind profiler was purchased and installed at WHOI's offshore tower. After a validation period, the original lidar was moved to a secondary land based site in Nantucket, MA.' DESCRIPTION = 'A LEOSPHERE WINDCUBE v2 was acquired from NRG Systems and deployed at WHOI's Air Sea Interaction Tower (ASIT). The WINDCUBE instrument is an industry approved LIDAR system for use in Wind Energy Resource Characterization studies. The choice of sensor was made in consultation with UL-AWS Truepower, the wind energy consultant advising MassCEC on its MetOcean Initiative. The lidar, serial number WLS7-436, was a leased model owned by NRG, the U.S. distributor for Leosphere. The instrument was installed at the platform level of the tower along an existing walkway that extends to the southwest, into the prevailing summer time wind direction relative to the center of the tower structure. The lidar connects directly to the ASIT's power and communications systems. Two separate deployments of the lidar were made as part of the study period. The first deployment spanned Oct. 7, 2016 to Dec. 28, 2018. The second deployment spanned Oct. 20, 2019 to Oct. 7, 2021. During the campaign period, the lidar was validated three times by NRG and once against an approved Tall Tower (see validation information). In 2021, a second wind profiling lidar was acquired from NRG Systems. After discussion with wind industry professionals and manufacturers, the decision was made to purchase a Zephir Ltd. ZX 300M Lidar. This lidar was tall tower validated (see validation information), and then deployed at the ASIT, next to the existing Leosphere Windcube. After a comparison period (see comparison report), the Windcube was relocated to a secondary land based site in Nantucket, MA. Data from both instruments is included in this repository. One deployment of the metocean sensors on the ASIT was made, spanning Nov. 2016 to present. Data from the two cup anemometers (at 26m amsl) and single wind direction vane (at 23m amsl) were combined with additional sensor data of air temperature, pressure, and Relative humidity (at 18m amsl) and ocean temperature and salinity (at 4m bmsl). These additional data were collected by various sensors and were maintained by WHOI or other ASIT users. Commissioning reports for both of the lidar deployments and the metocean sensors are included as part of this repository. See below or the commissioning reports for details of the sensors and sensor orientations, which differed between deployments.’ DATA_ORIGIN = 'Woods Hole Oceanographic Institution, Department of Physical Oceanography' FUNDING_SOURCE = 'The observations used in this study were supported by the Massachusetts Clean Energy Center from 2016 to 2020 and the National Offshore Wind Research and Development Consortium from 2021 to present. All data was collected by the Woods Hole Oceanographic Institution.' DATA_START_TIME = ‘2016-10-08’ DATA_STOP_TIME = ‘2022-01-01’ *********************************************** WINDCUBE V2 Additional Details *********************************************** ****************** Platform General description ***************** platform_type = ‘LIDAR’ INST_TYPE = ‘Leosphere WINDCUBE v2’ Version=2.1.1 ID System=WLS7-436 Location=MVCO ASIT GPS Location=Lat:41.325040N, Long:70.566678W FCR Option=OFF timezone=UTC+0 Deployment_1_startdate= 2016-10-08 12:00:00 GMT Deployment_1_enddate= 2018-12-28 00:00:00 GMT Deployment_1_Note_1: The WHOI 3D anemometer and Rohn lattice mast are inside the scan cone. Lidar chassis oriented such that all 4 beams are unobstructed; all interference is well below first range gate Deployment_1_Note_2: original offset was determined to be incorrect. In the interest of data continuity, no changes made to the lidar, but a specific alignment analysis was conducted to identify an offset for post-processing (see reference below). Offset estimated to be 60.5°. Diagram of tower and lidar orientations provided below in Figure 4. Deployment_1_Note_3: limited confidence in onboard compass; defer to external measurements. Original offset was 165.1; drift to 166.7 as of March 2017 via Windweb Deployment_1_Note_4: rounded to 13.0 m to set monitoring heights since no decimals allows in reporting elevations Deployment_1_Note_5: Leosphere has no lens height offset input for system configuration, so reporting elevations in data files DO NOT reflect actual monitoring heights relative to MSL; Need to have 13 m added to reporting elevation Deployment_1_Note_6: Offset has drifted to 155.3° on Windweb as of March 2017; Change being investigated with NRG Systems; Offset value rounded to 155° for alignment analysis. Deployment_2_startdate= 2019-10-20 12:00:00 GMT Deployment_2_enddate= 2021-10-01 00:00:00 GMT Deployment_2_Note_1: Physical Orientation of lidar body was 166 Degrees True. This offset was load to the 'User-defined Directional offset (°)' on 10/26/2019. ******************** Windcube Parameters ******************** Sampling Frequency (Hz)=250000000.000 Ref Frequency (Hz)=67800000.000 Pulses / Line of Sight=20000 Samples / Pulse=1024 Reflected Pulse Start=59 Reflected Pulse End=133 Ref pulse samples nb=1 Nb High Pass Filter Points=5 FFT Window Width=50 Laser Diode Current (mA)=1900 LOS= Init Drive Position (∞)=90 Pulse Repetition Rate (Hz)=30000.000 Pulse Duration (s)=0.000000175 Trigger Delay Time=0.000000020 Wavelength (nm)=1543.000 ScanAngle (∞)=28.000 DirectionOffset (∞)=155.400 Declination (∞)=165.100 PitchAngle (∞)=0.200 RollAngle (∞)=-0.100 CNRThreshold=-23.000 VrThreshold (m/s)=1.700 SigmaFreqThreshold (m/s)=0.750 WiperCNRThreshold=-19.000 WiperAltitude (m)=100 WiperDuration (ms)=5000 Altitudes (m)= 40 47 67 77 87 97 107 127 147 167 187 ******************** Data File Description ******************* infile_prefix = ‘WLS7-436_’ Column Description (unit) 1 Timestamp (YYYY/MM/DD HH:MM:SS.ms) 2 Position (beam position, compass degrees from heading ref 0,90,180,270, or v (vertical)) 3 Temperature (degC) 4 Wiper Count 5 40m CNR (dB) 6 40m Radial Wind Speed (m/s) 7 40m Radial Wind Speed Dispersion (m/s) 8 40m Wind Speed (m/s) 9 40m Wind Direction (∞) 10 40m X-wind (m/s) 11 40m Y-wind (m/s) 12 40m Z-wind (m/s) 13 47m CNR (dB) 14 47m Radial Wind Speed (m/s) 15 47m Radial Wind Speed Dispersion (m/s) 16 47m Wind Speed (m/s) 17 47m Wind Direction (∞) 18 47m X-wind (m/s) 19 47m Y-wind (m/s) 20 47m Z-wind (m/s) 21 67m CNR (dB) 22 67m Radial Wind Speed (m/s) 23 67m Radial Wind Speed Dispersion (m/s) 24 67m Wind Speed (m/s) 25 67m Wind Direction (∞) 26 67m X-wind (m/s) 27 67m Y-wind (m/s) 28 67m Z-wind (m/s) 29 77m CNR (dB) 30 77m Radial Wind Speed (m/s) 31 77m Radial Wind Speed Dispersion (m/s) 32 77m Wind Speed (m/s) 33 77m Wind Direction (∞) 34 77m X-wind (m/s) 35 77m Y-wind (m/s) 36 77m Z-wind (m/s) 37 87m CNR (dB) 38 87m Radial Wind Speed (m/s) 39 87m Radial Wind Speed Dispersion (m/s) 40 87m Wind Speed (m/s) 41 87m Wind Direction (∞) 42 87m X-wind (m/s) 43 87m Y-wind (m/s) 44 87m Z-wind (m/s) 45 97m CNR (dB) 46 97m Radial Wind Speed (m/s) 47 97m Radial Wind Speed Dispersion (m/s) 48 97m Wind Speed (m/s) 49 97m Wind Direction (∞) 50 97m X-wind (m/s) 51 97m Y-wind (m/s) 52 97m Z-wind (m/s) 53 107m CNR (dB) 54 107m Radial Wind Speed (m/s) 55 107m Radial Wind Speed Dispersion (m/s) 56 107m Wind Speed (m/s) 57 107m Wind Direction (∞) 58 107m X-wind (m/s) 59 107m Y-wind (m/s) 60 107m Z-wind (m/s) 61 127m CNR (dB) 62 127m Radial Wind Speed (m/s) 63 127m Radial Wind Speed Dispersion (m/s) 64 127m Wind Speed (m/s) 65 127m Wind Direction (∞) 66 127m X-wind (m/s) 67 127m Y-wind (m/s) 68 127m Z-wind (m/s) 69 147m CNR (dB) 70 147m Radial Wind Speed (m/s) 71 147m Radial Wind Speed Dispersion (m/s) 72 147m Wind Speed (m/s) 73 147m Wind Direction (∞) 74 147m X-wind (m/s) 75 147m Y-wind (m/s) 76 147m Z-wind (m/s) 77 167m CNR (dB) 78 167m Radial Wind Speed (m/s) 79 167m Radial Wind Speed Dispersion (m/s) 80 167m Wind Speed (m/s) 81 167m Wind Direction (∞) 82 167m X-wind (m/s) 83 167m Y-wind (m/s) 84 167m Z-wind (m/s) 85 187m CNR (dB) 86 187m Radial Wind Speed (m/s) 87 187m Radial Wind Speed Dispersion (m/s) 88 187m Wind Speed (m/s) 89 187m Wind Direction (∞) 187m X-wind (m/s) 90 187m Y-wind (m/s) 91 187m Z-wind (m/s) ******************* File Conventions = ‘ASCII text in 7z compression’ *********************************************** ZX 300M Additional Details *********************************************** ****************** Platform General description ***************** platform_type=‘LIDAR’ INST_TYPE=‘Zephir ZX 300M’ Version=2 ID System=Wind_1166 Location=MVCO ASIT GPS Location=Lat:41.325040N, Long:70.566678W FCR Option=OFF timezone=UTC+0 Deployment_1_startdate= 2021-09-01 00:00:00 GMT Deployment_1_enddate= 2022-01-01 00:00:00 GMT Deployment_1_Note_1: The WHOI 3D anemometer and Rohn lattice mast are inside the scan cone. Lidar chassis oriented such that the cone is far less than maximum cone obstruction range (90 degrees). ******************** ZX 300M Parameters ******************** Sampling Frequency (Hz)= 50 Wavelength (nm)=1560-1565 ScanAngle (∞)=30.000 DirectionOffset (∞)=254 Declination (∞)=14.24W Altitudes (m)= 38 47 67 77 87 97 107 127 147 167 187 ******************** Data File Description ******************* infile_prefix = ‘Wind_1166_’ Column Description (unit) 1 Reference 2 Time and Date 3 Timestamp (s) 4 Info. Flags 5 Status Flags 6 Battery (V) 7 Generator (V) 8 Upper Temp. (C) 9 Lower Temp. (C) 10 Pod Humidity (%) 11 GPS 12 Met Compass Bearing (deg) 13 Met Tilt (deg) 14 Met Air Temp. (C) 15 Met Pressure (mbar) 16 Met Humidity (%) 17 Met Wind Speed (m/s) 18 Met Wind Direction (deg) 19 Proportion Of Packets With Rain (%) 20 Proportion Of Packets with Fog (%) 21 Packets in Average at 187m 22 Wind Direction (deg) at 187m 23 Horizontal Wind Speed (m/s) at 187m 24 Horizontal Wind Speed Min (m/s) at 187m 25 Horizontal Wind Speed Max (m/s) at 187m 26 Horizontal Wind Speed Std. Dev. (m/s) at 187m 27 Vertical Wind Speed (m/s) at 187m 28 TI at 187m 29 Packets in Average at 167m 30 Wind Direction (deg) at 167m 31 Horizontal Wind Speed (m/s) at 167m 32 Horizontal Wind Speed Min (m/s) at 167m 33 Horizontal Wind Speed Max (m/s) at 167m 34 Horizontal Wind Speed Std. Dev. (m/s) at 167m 35 Vertical Wind Speed (m/s) at 167m 36 TI at 167m 37 Packets in Average at 147m 38 Wind Direction (deg) at 147m 39 Horizontal Wind Speed (m/s) at 147m 40 Horizontal Wind Speed Min (m/s) at 147m 41 Horizontal Wind Speed Max (m/s) at 147m 42 Horizontal Wind Speed Std. Dev. (m/s) at 147m 43 Vertical Wind Speed (m/s) at 147m 44 TI at 147m 45 Packets in Average at 127m 46 Wind Direction (deg) at 127m 47 Horizontal Wind Speed (m/s) at 127m 48 Horizontal Wind Speed Min (m/s) at 127m 49 Horizontal Wind Speed Max (m/s) at 127m 50 Horizontal Wind Speed Std. Dev. (m/s) at 127m 51 Vertical Wind Speed (m/s) at 127m 52 TI at 127m 53 Packets in Average at 107m 54 Wind Direction (deg) at 107m 55 Horizontal Wind Speed (m/s) at 107m 56 Horizontal Wind Speed Min (m/s) at 107m 57 Horizontal Wind Speed Max (m/s) at 107m 58 Horizontal Wind Speed Std. Dev. (m/s) at 107m 59 Vertical Wind Speed (m/s) at 107m 60 TI at 107m 61 Packets in Average at 97m 62 Wind Direction (deg) at 97m 63 Horizontal Wind Speed (m/s) at 97m 64 Horizontal Wind Speed Min (m/s) at 97m 65 Horizontal Wind Speed Max (m/s) at 97m 66 Horizontal Wind Speed Std. Dev. (m/s) at 97m 67 Vertical Wind Speed (m/s) at 97m 68 TI at 97m 69 Packets in Average at 87m 70 Wind Direction (deg) at 87m 71 Horizontal Wind Speed (m/s) at 87m 72 Horizontal Wind Speed Min (m/s) at 87m 73 Horizontal Wind Speed Max (m/s) at 87m 74 Horizontal Wind Speed Std. Dev. (m/s) at 87m 75 Vertical Wind Speed (m/s) at 87m 76 TI at 87m 77 Packets in Average at 77m 78 Wind Direction (deg) at 77m 79 Horizontal Wind Speed (m/s) at 77m 80 Horizontal Wind Speed Min (m/s) at 77m 81 Horizontal Wind Speed Max (m/s) at 77m 82 Horizontal Wind Speed Std. Dev. (m/s) at 77m 83 Vertical Wind Speed (m/s) at 77m 84 TI at 77m 85 Packets in Average at 67m 86 Wind Direction (deg) at 67m 87 Horizontal Wind Speed (m/s) at 67m 88 Horizontal Wind Speed Min (m/s) at 67m 89 Horizontal Wind Speed Max (m/s) at 67m 90 Horizontal Wind Speed Std. Dev. (m/s) at 67m 91 Vertical Wind Speed (m/s) at 67m 92 TI at 67m 93 Packets in Average at 47m 94 Wind Direction (deg) at 47m 95 Horizontal Wind Speed (m/s) at 47m 96 Horizontal Wind Speed Min (m/s) at 47m 97 Horizontal Wind Speed Max (m/s) at 47m 98 Horizontal Wind Speed Std. Dev. (m/s) at 47m 99 Vertical Wind Speed (m/s) at 47m 100 TI at 47m 101 Packets in Average at 38m 102 Wind Direction (deg) at 38m 103 Horizontal Wind Speed (m/s) at 38m 104 Horizontal Wind Speed Min (m/s) at 38m 105 Horizontal Wind Speed Max (m/s) at 38m 106 Horizontal Wind Speed Std. Dev. (m/s) at 38m 107 Vertical Wind Speed (m/s) at 38m 108 TI at 38m 109 Checksum ******************* File Conventions = ‘csv in zip compression’ History = ‘Downloaded and Archived by A. Kirincich and E. Cinquino 3/2021 and 5/2022'