Published May 2, 2025 | Version v1
Dataset Open

LAS3R field campaign, Aboa, Antarctica, 2022-23: Snow pit, AWS5, albedo, RGB drone mosaics, surface roughness and elevation

Creators

  • 1. Finnish Meteorological Institute

Contributors

Project leader:

Description

Measurements were conducted during Finnish Antarctic Research Programme (FINNARP) 2022 expedition to Finnish Aboa station located in Dronning Maud Land in western Antarctica. The field measurements were made weekly at AWS5 weather station (−73.105034S, −13.162370W), approximately 10 km from Aboa station, and at different satellite overpass locations on pre-checked GPS routes typically 5-35 km from the station. In total 8 measurement occasions were made at AWS5 site and 16 measurements at different IceSat-2 and CryoSat-2 satellite overpass locations between November 2022 and February 2023. Measurements included snow surface roughness observed with a drone-based laser scanner and a backpack-based laser scanner, radiation observations on the ground, radiation observations on a drone, snow pit measurements, and meteorological measurement at the weather station. This data set includes data from the snow pits (date, time, location, coordinates, stratigraphy, hardness, wetness, grain size, grain type, density, temperature, liquid water content, specific surface area, depth of measurements), data from the automatic weather station (AWS5) maintained by FINNARP (date and time, air temperature, distance between sensor and snow surface, wind speed, wind direction, relative humidity, albedo, long- and shortwave incoming radiation, long- and shortwave outgoing radiation, long- and shortwave net radiation), albedo data from Eppley and CM14 radiation stations (shortwave broadband albedo, up- and downwelling shortwave radiative flux, solar zenith angle, solar azimuth angle, coordinates), albedo data from drone (shortwave broadband albedo, downwelling shortwave radiative flux, solar zenith angle, coordinates), RGB drone image mosaics, and surface roughness and elevation derived from the laser scanner data. Hyperspectral camera data is available on request. The data set is related to manuscript on "Measurements on physical snow properties in Dronning Maud Land, Antarctica".

Files

IceCube SSA.zip

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Additional details

Identifiers

URL
https://etsin.fairdata.fi/dataset/9fd7ec6a-22e9-4195-95b6-be41f40a734e
b2rec
900cf0c74c1c45efb396b910a841bb3c

Funding

FINNARP
Research Council of Finland

Instruments

Hemispherical near-infrared reflectance from snow sample surface measured with IceCube instrument (manufacturer A2 Photonic Sensors) and converted to specific surface area with dedicated software.
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Liquid water content and density measured with SnowFork instrument (manufacturer Insinööritoimisto Toikka)
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Density measured with 3 cm high rectangular density cutter which volume is 100 cm^3
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Stratigraphy measurement includes layer depth, hardness with hand scale, wetness with hand scale, grain size, and grain type
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Temperature measured with HI98501 digital thermometer (manufacturer Hanna Instruments Ltd)
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Grain size and type estimated from macrophotos taken against SEAR crystal card 1-mm reference grid
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Sensor distance to the snow surface is measured with the SR50A sensor (Campbell Scientific)
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Air temperature and relative humidity are measured using the HMP110 sensor (Vaisala)
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Wind speed is measured using the Heavy Duty Wind Monitor HD-Alpine Model 05108-45 sensor (R&M Young)
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Surface albedo and short- and longwave incoming and outgoing radiation are determined via upward and downward facing CNR4 pyranometers (Kipp & Zonen)
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Shortwave broadband albedo is measured with CM14 radiation station (Kipp & Zonen)
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Shortwave broadband albedo is measured with Eppley radiation station
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Mavic 2 Pro (DJI) original camera is used for RGB images
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Drone based albedo is measured with CM11 pyranometer (Kipp & Zonen)
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Surface roughness and elevation are derived from Riegl VUX-120 laser scanner data
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FMI metadata

Process step
Lineage
Original version, no quality checked
Parameter
  • Parameter name: Date and time of AWS5 measurements
  • Parameter unit: yyyy-mm-dd hh:mm:ss
  • Parameter description: TIMESTAMP
  • Parameter name: Distance between sensor and snow surface
  • Parameter unit: m
  • Parameter description: TCDT
  • Parameter name: Wind speed
  • Parameter unit: m/s
  • Parameter description: WS_ms_S_WVT
  • Parameter name: Wind direction
  • Parameter unit: degree
  • Parameter description: WindDir_D1_WVT
  • Parameter name: Relative humidity
  • Parameter unit: %
  • Parameter description: RH
  • Parameter name: Air temperature
  • Parameter unit: Degree C
  • Parameter description: AirTC_Avg
  • Parameter name: Albedo (AWS5)
  • Parameter unit: W/m^2
  • Parameter description: Albedo_Avg
  • Parameter name: Longwave radiation incoming (AWS5)
  • Parameter unit: W/m^2
  • Parameter description: LWUpperCo_Avg
  • Parameter name: Longwave radiation outgoing (AWS5)
  • Parameter unit: W/m^2
  • Parameter description: LWLowerCo_Avg
  • Parameter name: Shortwave radiation incoming (AWS5)
  • Parameter unit: W/m^2
  • Parameter description: SWUpper_Avg
  • Parameter name: Shortwave radiation outgoing (AWS5)
  • Parameter unit: W/m^2
  • Parameter description: SWLower_Avg
  • Parameter name: Net shortwave radiation (AWS5)
  • Parameter unit: W/m^2
  • Parameter description: RsNet_Avg
  • Parameter name: Net longwave radiation (AWS5)
  • Parameter unit: W/m^2
  • Parameter description: RlNet_Avg
  • Parameter name: Date of snow pit measurement
  • Parameter unit: dd.mm.yyyy
  • Parameter description: Date
  • Parameter name: Time of snow pit measurement
  • Parameter unit: hh:mm
  • Parameter description: Time
  • Parameter name: Coordinates of snow pit measurement
  • Parameter unit: degrees
  • Parameter description: GPS
  • Parameter name: Location of snow pit measurement. Pit I refers to snow pit close to radiation station and pits II, III, IV, V, and VI refers to surface measurements.
  • Parameter unit: -
  • Parameter description: Point
  • Parameter name: Wetness
  • Parameter unit: Hand scale
  • Parameter description: Wetness
  • Parameter name: Hardness
  • Parameter unit: Hand scale
  • Parameter description: Hardness
  • Parameter name: Grain size
  • Parameter unit: mm
  • Parameter description: Size
  • Parameter name: Grain type according to international snow classification
  • Parameter unit: -
  • Parameter description: Type
  • Parameter name: Weight of density sampler
  • Parameter unit: g
  • Parameter description: Weight
  • Parameter name: Weight of empty density sampler
  • Parameter unit: g
  • Parameter description: Empty sampler weight
  • Parameter name: Density
  • Parameter unit: g/cm^3
  • Parameter description: Density
  • Parameter name: Liquid water content
  • Parameter unit: %
  • Parameter description: LWC
  • Parameter name: Snow depth for temperature, SnowFork liquid water content and SnowFork density
  • Parameter unit: cm
  • Parameter description: SD
  • Parameter name: Snow depth at top of density sample or snow layer interface in stratigraphy
  • Parameter unit: cm
  • Parameter description: SD top
  • Parameter name: Snow depth at bottom of density sample or snow layer interface in stratigraphy
  • Parameter unit: cm
  • Parameter description: SD bottom
  • Parameter name: Temperature (snow and air)
  • Parameter unit: degree C
  • Parameter description: Temperature
  • Parameter name: Post-processed grain size
  • Parameter unit: mm
  • Parameter description: Size (post)
  • Parameter name: Specific surface area
  • Parameter unit: m^2/kg
  • Parameter description: Specific surface area (SSA)
  • Parameter name: Snow depth of SSA sample top level
  • Parameter unit: cm
  • Parameter description: Depth
  • Parameter name: Downwelling (incident) shortwave broadband radiative flux (Eppley and drone)
  • Parameter unit: W/m^2
  • Parameter description: PSP100up_corr_Wm-2
  • Parameter name: Upwelling (reflected) shortwave broadband radiative flux (Eppley)
  • Parameter unit: W/m^2
  • Parameter description: PSP099dn_corr_Wm-2
  • Parameter name: Shortwave broadband blue-sky albedo (Eppley and CM14)
  • Parameter unit: W/m^2
  • Parameter description: calibrated_albedo
  • Parameter name: Seconds since 2022-11-20 00:00:00 (Eppley, CM14 and drone)
  • Parameter unit: s
  • Parameter description: Time
  • Parameter name: Solar Zenith Angle (SZA) of radiation measurement (Eppley, CM14 and drone)
  • Parameter unit: Degrees
  • Parameter description: SZA
  • Parameter name: Downwelling shortwave broadband radiative flux (CM14 and drone)
  • Parameter unit: W/m^2
  • Parameter description: SWD
  • Parameter name: Upwelling shortwave broadband radiative flux (CM14)
  • Parameter unit: W/m^2
  • Parameter description: SWU
  • Parameter name: Solar Azimuth Angle of measurement (CM14)
  • Parameter unit: Degrees
  • Parameter description: SAZI
  • Parameter name: Latitude of CM14 measurement
  • Parameter unit: degrees_north
  • Parameter description: LatitudeN
  • Parameter name: Longitude of CM14 measurement
  • Parameter unit: degrees_east
  • Parameter description: LongitudeE
  • Parameter name: Shortwave broadband blue-sky surface albedo, combination of drone-measured reflected flux and ground-measured incident flux
  • Parameter unit: -
  • Parameter description: drone_albedo
  • Parameter name: Surface elevation of snow surface (bucket-resampled average), from the Riegl VUX-120 point cloud
  • Parameter unit: m
  • Parameter description: resampled_z_mn_m
  • Parameter name: RMS slope (beta) of snow surface, as in Manninen et al. (2021)
  • Parameter unit: radian
  • Parameter description: resampled_beta_mean_rad_by_line_RMSheight
  • Parameter name: latitude of drone measurements
  • Parameter unit: degrees_north
  • Parameter description: y
  • Parameter name: longitude of drone measurements
  • Parameter unit: degrees_east
  • Parameter description: x
Supplemental information
Snow surface is 0 cm in the snow pit measurements
Topic category
environment

Temporal Coverage

Ranges:

Start date: 2022-10-31
End date: 2023-01-31