Data Announcements

New data set release: SnowEx17 Radiometrics Surface-Based Radiometer Brightness Temperatures

18 March 2019

The SnowEx17 Radiometrics Surface-Based Radiometer Brightness Temperatures, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set consists of surface-based radiometer (SBR) brightness temperatures of the snow surface and vegetation for 37 locations across Grand Mesa, CO. The data were collected during the NASA 2017 SnowEx campaign from 14 February 2017 through 18 February 2017. Four SBRs were deployed in the field and obtained measurements at 89, 37, 19, and 10.67 GHz in both vertical (V-pol) and horizontal (H-pol) polarizations. They include both 2 to 4-minute observations and 20-minute continuous measurements during surface melt, with the latter designed to capture the brightness temperature increase caused by the presence of liquid water in the snow. This data set also includes snowfork measurements of snow wetness for 13 of the 37 sites.

Data set DOI: https://doi.org/10.5067/JWONK1ZTSBXX

New data set release: SnowEx17 CRREL Terrestrial Laser Scanner (TLS) Point Cloud

27 February 2019

The SnowEx17 CRREL Terrestrial Laser Scanner (TLS) Point Cloud, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

This data set contains terrestrial LiDAR survey (TLS) point cloud data collected at Grand Mesa, Colorado as part of the 2017 SnowEx campaign. Data were collected in the fall (September and October) and winter (February) seasons from 26 September 2016 to 17 February 2017. Each point contains X, Y, and Z coordinates (Easting, Northing, and Elevation), along with ancillary information, such as intensity (i) and color (R,G,B), where available. This is unprocessed data which has not been classified by land use (e.g. bare earth, low vegetation, trees).

Data set DOI: https://doi.org/10.5067/YOIPYEWCZOD5

New data set release: SnowEx17 Boise State University Raw Terrestrial Laser Scanner (TLS) Point Cloud

14 February 2019

The SnowEx17 Boise State University Raw Terrestrial Laser Scanner (TLS) Point Cloud, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

This data set contains raw, unprocessed terrestrial laser scanner (TLS) point cloud data collected as part of the 2017 SnowEx campaign in Grand Mesa, Colorado between 26 September 2016 and 25 February 2017. Data were collected in the fall (September 2016) and winter (February 2017). Multiple scans were conducted at each site and registered together using common targets. Each point contains X, Y, and Z coordinates (Easting, Northing, and Elevation), as well as intensity (i).

Data Set DOI: https://doi.org/10.5067/3YZYV93X5E28

New data set release: SnowEx17 Boise State University Terrestrial Laser Scanner (TLS) Point Cloud

29 January 2019

The SnowEx17 Boise State University Terrestrial Laser Scanner (TLS) Point Cloud, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

This data set contains terrestrial laser scanner (TLS) LiDAR point cloud data collected as part of the 2017 SnowEx campaign in Grand Mesa, Colorado between 26 September 2016 and 25 February 2017. Data were collected during snow-off (September 2016) and snow-on (February 2017) conditions at both open and forested locations. Multiple scans were conducted at each site and registered together using common targets. Each point contains X, Y, and Z coordinates (Easting, Northing, and Elevation), as well as intensity (i). These data can be used to determine snow depth and explore the interactions between snow and vegetation.

Data Set DOI: https://doi.org/10.5067/IWGD4WFMCQNW

New data set release: SnowEx17 UM Quantum Well Infrared Photodetector (QWIP) Surface Temperature, Version 1

13 December 2018

The SnowEx17 UM Quantum Well Infrared Photodetector (QWIP) Surface Temperature, Version 1 data set is now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

This data set contains raw (uncalibrated) infrared camera images collected during the 2017 SnowEx campaign in Grand Mesa and Senator Beck Basin, Colorado. Images were taken using a Quantum Well Infrared Photodetector (QWIP) camera system manufactured by QmagiQ and mounted to the P-3 aircraft, which was flown over the study areas between 16 February 2017 to 25 February 2017.

DOI: https://doi.org/10.5067/QWOOEJQ87NM2

New data set release: SnowEx17 KT-15 Infrared Brightness Temperature, Version 1

8 October 2018

The SnowEx17 KT-15 Infrared Brightness Temperature data set is now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

This data set contains brightness temperature readings which were measured using a KT-15 pyrometer flown on a P-3 aircraft over 2017 SnowEx campaign study areas in Colorado, USA: Grand Mesa, a snow-covered, forested study site about 40 miles east of Grand Junction; and Senator Beck Basin, approximately 80 miles to the SSE of Grand Mesa. Data represents the nadir brightness temperature below the aircraft.  The footage was acquired between 10 February 2017 and 25 February 2017.

DOI:  https://doi.org/10.5067/0K3PJQZ4OX4P

 

New data set release: SnowEx17 P-3 Airborne Video, Version 1

26 September 2018

The SnowEx17 P-3 Airborne Video data set is now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

This data set contains raw video footage captured using a video camera mounted to the belly of a P-3 aircraft during the 2017 SnowEx science flights over two locations in Colorado, USA: Grand Mesa, a snow-covered forested study site about 40 miles east of Grand Junction, and Senator Beck Basin, approximately 80 miles to the SSE of Grand Mesa.  The footage was acquired between 15 February 2017 and 25 February 2017.

DOI:   https://doi.org/10.5067/8S0J8T73YP0E

New data set release: SnowEx17 Ground Penetrating Radar Raw, Version 1

6 September 2018

The SnowEx17 Ground Penetrating Radar Raw data set is now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

This data set contains the raw and unprocessed results of a ground penetrating radar survey conducted as part of the 2017 SnowEx campaign. Data were collected between 08 February 2017 and 25 February 2017 at Grand Mesa, Colorado.

Data set DOI: https://doi.org/10.5067/6JS9BKPIGMLJ

New data set release: SnowEx17 Ground Penetrating Radar, Version 1

9 August 2018

The SnowEx17 Ground Penetrating Radar data set is now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

This data set contains the results of a ground penetrating radar survey conducted at Grand Mesa, Colorado, between 08 February 2017 and 23 February 2017 as part of the 2017 SnowEx campaign. Data files include two-way travel time, calculated snow depth, and calculated snow water equivalent.

Data set DOI: https://doi.org/10.5067/NPZYNEEUGQUO

Level of Service update: SnowEx17 Time Series Sonic Snow Depth Measurement Array, Version 1

25 July 2018

The SnowEx17 Time Series Sonic Snow Depth Measurement Array, Version 1 data set has been updated from a basic to a standard level of service at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). Please see our Adding clarity to NSIDC data support with new Level of Service (LoS) model article more information.

This data set contains 15-min snow depth observations for two study sites on Grand Mesa, CO, USA, acquired between 12 October 2016 and 02 July 2017 as part of NASA’s 2017 SnowEx campaign. The data were recorded using two arrays of Judd Communications Ultrasonic Depth Sensors, positioned to represent three primary vegetation conditions: open-canopy; canopy-edge; and closed-canopy.

Data set DOI: https://doi.org/10.5067/5YJEYNLS1YK4

 

Level of Service update: SnowEx17 Ground-Based UWScat Ku- and X-Band Frequency Modulated Continuous Wave Radar, Version 1

25 July 2018

The SnowEx17 Ground-Based UWScat Ku- and X-Band Frequency Modulated Continuous Wave Radar, Version 1 data set data set has been updated from a basic to a standard level of service at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). Please see our Adding clarity to NSIDC data support with new Level of Service (LoS) model article more information.

This data set consists of ground-based scatterometer data acquired from 21 February 2017 to 25 February 2017 as part of NASA’s SnowEx 2017 campaign at Grand Mesa, Colorado, USA. The data comprise operational parameters used during data acquisition, Mueller matrices for each acquisition, and nearfield-corrected normalized radar cross sections (NRCS). Range profile data are also provided for each scan which report the raw power returned as a function of range from the antenna.

Data Set DOI: https://dx.doi.org/10.5067/ZW3UUYUZRYJO

SnowEx17 CRREL Differential GNSS Survey data set now available

19 July 2018

The SnowEx17 CRREL Differential GNSS Survey data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

This data set contains the coordinates of SnowEx infrastructure in Grand Mesa, Colorado, collected through a differential GNSS real-time kinematic (RTK) survey. The surveys were conducted at 244 stakes along 90 transects, 31 snow pits, 24 time-lapse cameras, and 15 reference poles used to estimate snow depth from camera images. Data files report the name, location, elevation, horizontal and vertical precision, date and time, original easting and northing, and any relevant notes for each survey point.

Data set DOI: https://doi.org/10.5067/I0HTB2UVNSEF

SnowEx17 Time Series Sonic Snow Depth Measurement data set now available

13 June 2018

The SnowEx17 Time Series Sonic Snow Depth Measurement data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

This data set contains 15-min snow depth observations for two study sites on Grand Mesa, CO, USA, acquired as part of NASA’s 2017 SnowEx campaign. The data were recorded using two arrays of Judd Communications Ultrasonic Depth Sensors, positioned to represent three primary vegetation conditions: open-canopy; canopy-edge; and closed-canopy.

This data set is being made available with minimal documentation as part of an early release. NSIDC will provide an increased level of support and more detailed documentation in the future.

Data set DOI: https://doi.org/10.5067/5YJEYNLS1YK4

SnowEx17 SnowEx17 Ground-Based UWScat Ku- and X-Band Frequency Modulated Continuous Wave Radar data set now available

12 June 2018

The SnowEx17 Ground-Based UWScat Ku- and X-Band Frequency Modulated Continuous Wave Radar data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

This data set consists of ground-based scatterometer data acquired during the SnowEx 2017 campaign at Grand Mesa, Colorado, USA, a snow-covered, forested study site about 40 miles east of the city of Grand Junction, CO. The data comprise operational parameters used during data acquisition, Mueller matrices for each acquisition, and the nearfield-corrected normalized radar cross section (NRCS) in VV, VH, HV, and HH polarizations. Range profile data are also provided for each scan which report the raw power returned as a function of range from the antenna.

This data set is being made available with minimal documentation as part of an early release. NSIDC will provide an increased level of support and more detailed documentation in the future.

Data Set DOI: https://dx.doi.org/10.5067/ZW3UUYUZRYJO

SnowEx17 Laser Snow Microstructure Specific Surface Area data set now available

24 May 2018

The SnowEx17 Laser Snow Microstructure Specific Surface Area data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set, obtained as part of the NASA SnowEx 2017 field campaign, reports vertical profiles of snow reflectance, specific surface area (SSA), and optical equivalent diameter (grain size) for 95 locations at Grand Mesa, Colorado, USA, a snow-covered, forested study site about 40 miles east of Grand Junction. Reflectance was measured in situ using a 1310 nm integrating sphere laser device and then converted to SSA and optical equivalent diameter.

Data Set DOI: https://doi.org/10.5067/H9C1UVWN1UK3

SnowEx17 Community Snow Depth Probe Measurements now available

23 May 2018

The SnowEx17 Community Snow Depth Probe Measurements data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set, obtained as part of the NASA SnowEx 2017 field campaign, contains in situ snow depth measurements along multiple transects at two locations in Colorado, USA: Grand Mesa, a snow-covered, forested study site about 40 miles east of Grand Junction; and Senator Beck Basin approximately 80 miles to the SSE of Grand Mesa.

Data Set DOI: https://doi.org/10.5067/WKC6VFMT7JTF

NASA SnowEx 2017 Community Snow Pits Data Now Available

16 May 2018

In situ measurements of snow temperature, density, stratigraphy, grain size, wetness, depth, and snow water equivalent (SWE) are now available for 265 snow pits across two study sites in Colorado, USA: Grand Mesa, a snow-covered, forested study site about 40 miles east of Grand Junction and Senator Beck Basin approximately 80 miles to the SSE of Grand Mesa.

These data were obtained during the NASA SnowEx 2017 campaign.

To access the data, visit the data set landing page here: SnowEx17 Community Snow Pit Measurements, Version 1

Data Set DOI: https://dx.doi.org/10.5067/Q0310G1XULZS

NASA SnowEx 2017 BRDF Data Now Available

22 March 2018

Measurements of the bidirectional reflectance distribution function (BRDF) at two locations in Colorado—Grand Mesa, a snow-covered, forested study site about 40 miles east of Grand Junction, and Senator Beck Basin approximately 80 miles to the SSE of Grand Mesa—are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

These data were obtained during the NASA SnowEx 2017 campaign using the Cloud Absorption Radiometer, an airborne multi-angular, multi-wavelength scanning radiometer that measures scattered light in 14 spectral bands.

For complete documentation and access to the data, visit the data set landing page here: SnowEx17 Cloud Absorption Radiometer BRDF, Version 1

Data Set DOI: https://doi.org/10.5067/VH3F5ZPLH3PM

NASA SnowEx17 SnowMicroPen (SMP) Raw Penetration Force Profiles Data Now Available

28 September 2017

NASA SnowEx17 SnowMicroPen (SMP) Raw Penetration Force Profiles data are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains raw penetration force profiles measured at snow pits and along linear transects at Grand Mesa, Colorado using the SMP, a digital snow penetrometer.

Data Set DOI: http://dx.doi.org/10.5067/ZPOLBRHVWG5V