cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17592/001.2022082005
title: Okhotsk Soya sea ice observation dataset in 2000

description: This dataset was obtained using PV Soya in the southern Sea of Okhotsk in February 2000, in collaboration between Japan Coast Guard and Hokkaido University to monitor the ice conditions associated with the global warming and improve our understanding of sea ice processes. The dataset is composed of the meteorological data (surface air pressure, air temperature, vapor pressure, and winds) recorded on board at an interval of one minute, the ice thickness data measured with a video system, and hourly visual observation records conducted according to the international ASPeCt protocol. The data format is available in the file, named Readme_soya_2000.docx.
DOI: 10.17592/001.2022082004
title: Okhotsk Soya sea ice observation dataset in 1999

description: This dataset was obtained using PV Soya in the southern Sea of Okhotsk in February 1999, in collaboration between Japan Coast Guard and Hokkaido University to monitor the ice conditions associated with the global warming and improve our understanding of sea ice processes. The dataset is composed of the meteorological data (surface air pressure, air temperature, vapor pressure, and winds) recorded on board at an interval of one minute, the ice thickness data measured with a video system, and hourly visual observation records conducted according to the international ASPeCt protocol. The data format is available in the file, named Readme_soya_1999.docx.
DOI: 10.17592/001.2022082002
title: Okhotsk Soya sea ice observation dataset in 1997

description: This dataset was obtained using PV Soya in the southern Sea of Okhotsk in February 1997, in collaboration between Japan Coast Guard and Hokkaido University to monitor the ice conditions associated with the global warming and improve our understanding of sea ice processes. The dataset is composed of the meteorological data (surface air pressure, air temperature, vapor pressure, and winds) recorded on board at an interval of one minute, the ice thickness data measured with a video system, and hourly visual observation records conducted according to the international ASPeCt protocol. The data format is available in the file, named Readme_soya_1997.docx.
DOI: 10.17592/001.2022082003
title: Okhotsk Soya sea ice observation dataset in 1998

description: This dataset was obtained using PV Soya in the southern Sea of Okhotsk in February 1998, in collaboration between Japan Coast Guard and Hokkaido University to monitor the ice conditions associated with the global warming and improve our understanding of sea ice processes. The dataset is composed of the meteorological data (surface air pressure, air temperature, vapor pressure, and winds) recorded on board at an interval of one minute, the ice thickness data measured with a video system, and hourly visual observation records conducted according to the international ASPeCt protocol. The data format is available in the file, named Readme_soya_1998.docx.
DOI: 10.17592/001.2022082001
title: Okhotsk Soya sea ice observation dataset in 1996

description: This dataset was obtained using PV Soya in the southern Sea of Okhotsk in February 1996, in collaboration between Japan Coast Guard and Hokkaido University to monitor the ice conditions associated with the global warming and improve our understanding of sea ice processes. The dataset is composed of the meteorological data (surface air pressure, air temperature, vapor pressure, and winds) recorded on board at an interval of one minute, the ice thickness data measured with a video system, and hourly visual observation records conducted according to the international ASPeCt protocol. The data format is available in the file, named Readme_soya_1996.docx.
DOI: 10.17592/001.2022112801
title: Monthly data set of sea ice production and thin ice type for the Northern Hemisphere

description: We provide monthly data for sea ice production (m/month) and occurrence rates of thin ice and active frazil for all sea ice-covered oceans in the Northern Hemisphere during the winters (September-May) of 2002/2003 to 2010/2011. The sea ice data are mapped onto the National Snow and Ice Data Center (NSIDC) polar stereographic projection with a grid spacing of 6.25 km. For information on how to access the geolocation data, please see the website of NSIDC (https://nsidc.org/data/user-resources/help-center/guide-nsidcs-polar-stereographic-projection). The monthly occurrence rates of thin ice and active frazil are calculated by using daily thin ice type retrieved from AMSR-E microwave data. The estimation of ice production is based on a heat flux calculation that uses ERA5 reanalysis product and AMSR-E ice thickness improved by taking account of the ice type. The calculation period of the occurrence rates includes the sea ice melt season, in which the accuracy of thin ice detection is considerably reduced. When thin ice is detected in the melt season, pixels with a positive net heat flux are excluded from the judgment of thin ice and active frazil because they are not considered to be newly formed ice.
DOI: 10.17592/001.2022061301
title: Non-destructive analysis and lithological descriptions of sediment cores from Lake Nurume (JARE61)

description: Antarctica's lake sediments are valuable geological archives for paleoenvironmental reconstructions as sea-level and ice-sheet change. It is important to proceed with an analysis of cores from several locations in one lake to reconstruct detailed environmental changes. In the geomorphological survey of the 61st Japanese Antarctic Research Expedition, we collected four sediment cores in Lake Nurume, located at Langhovde in Lutzow-Holm Bay, East Antarctica. We present preliminary results of non-destructive analysis of these cores, such as X-ray CT scanning, physical properties, and visual core descriptions.
DOI: 10.17592/001.2022072209
title: Ice thickness along the traverse line across the major route at longitude +5 degree near Kohnen, Antarctica, based on JASE ground-based radar surveys

description: This dataset contains the ice thickness data recorded by ground-based radio echo sounding experiment carried out along a traverse line near the Kohnen Station in East Antarctica. The data were recorded in the joint Japanese-Swedish JASE traverse survey by NIPR (the 48th and 49th Japanese Antarctic Research Expedition (JARE48 and JARE49)) and Stockholm University. PIs of the joint survey are Shuji Fujita (NIPR, Japan) and Per Holmlund (Stockholm University, Sweden). They used a pulse-modulated VHF radar sounder with a peak transmission power of 1 kW, a center frequency of 179 MHz and a transmitter pulse width of 250 ns. Position of sites are recorded based on GPS with errors within 20 m. Fujita et al. (2011) and Fujita et al. (2012) are the original papers for the data. In 2021, the data were validated and corrected (Tsutaki et al. 2022, TC paper).
DOI: 10.17592/001.2022072208
title: Ice thickness along the traverse routes between Kohnen and Svea Station, Antarctica, based on JASE ground-based radar surveys

description: This dataset contains the ice thickness data recorded by ground-based radio echo sounding experiment carried out along a traverse route from the Kohnen Station toward Svea Station in East Antarctica. The data were recorded in the joint Japanese-Swedish JASE traverse survey by NIPR (the 48th and 49th Japanese Antarctic Research Expedition (JARE48 and JARE49)) and Stockholm University. PIs of the joint survey are Shuji Fujita (NIPR, Japan) and Per Holmlund (Stockholm University, Sweden). They used a pulse-modulated VHF radar sounder with a peak transmission power of 1 kW, a center frequency of 179 MHz and a transmitter pulse width of 250 ns. Position of sites are recorded based on GPS with errors within 20 m. Fujita et al. (2011) and Fujita et al. (2012) are the original papers for the data. In 2021, the data were validated and corrected (Tsutaki et al. 2022, TC paper).
DOI: 10.17592/001.2022072207
title: Ice thickness along the traverse line from the JASE Meeting Point toward Kohnen and Wasa Station, Antarctica, based on JASE ground-based radar surveys

description: This dataset contains the ice thickness data recorded by ground-based radio echo sounding experiment carried out along a traverse route from the JASE meeting point toward Kohnen Station and Wasa Station in East Antarctica. The data were recorded in the joint Japanese-Swedish JASE traverse survey by NIPR (the 48th and 49th Japanese Antarctic Research Expedition (JARE48 and JARE49)) and Stockholm University. PIs of the joint survey are Shuji Fujita (NIPR, Japan) and Per Holmlund (Stockholm University, Sweden). They used a pulse-modulated VHF radar sounder with a peak transmission power of 1 kW, a center frequency of 179 MHz and a transmitter pulse width of 250 ns. Position of sites are recorded based on GPS with errors within 20 m. Fujita et al. (2011) and Fujita et al. (2012) are the original papers for the data. In 2021, the data were validated and corrected (Tsutaki et al. 2022, TC paper).
DOI: 10.17592/001.2022072211
title: Ice thickness near Svea Station and Wasa Station, Antarctica, based on JASE ground-based radar surveys

description: This dataset contains the ice thickness data recorded by ground-based radio echo sounding experiment carried out along the traverse route near Svea Station and Wasa Station in East Antarctica. The data were recorded in the joint Japanese-Swedish JASE traverse survey by NIPR (the 48th and 49th Japanese Antarctic Research Expedition (JARE48 and JARE49)) and Stockholm University. PIs of the joint survey are Shuji Fujita (NIPR, Japan) and Per Holmlund (Stockholm University, Sweden). They used a pulse-modulated VHF radar sounder with a peak transmission power of 1 kW, a center frequency of 179 MHz and a transmitter pulse width of 250 ns. Position of sites are recorded based on GPS with errors within 20 m. Fujita et al. (2011) and Fujita et al. (2012) are the original papers for the data. In 2021, the data were validated and corrected (Tsutaki et al. 2022, TC paper).
DOI: 10.17592/001.2022072206
title: Ice thickness along 60 km traverse line in the vicinity of the JASE Meeting Point, Antarctica, based on JASE ground-based radar surveys

description: This dataset contains the ice thickness data recorded by ground-based radio echo sounding experiment carried out along a traverse line in the vicinity of the JASE meeting point in East Antarctica. The data were recorded in the joint Japanese-Swedish JASE traverse survey by NIPR (the 48th and 49th Japanese Antarctic Research Expedition (JARE48 and JARE49)) and Stockholm University. PIs of the joint survey are Shuji Fujita (NIPR, Japan) and Per Holmlund (Stockholm University, Sweden). They used a pulse-modulated VHF radar sounder with a peak transmission power of 1 kW, a center frequency of 179 MHz and a transmitter pulse width of 250 ns. Position of sites are recorded based on GPS with errors within 20 m. Fujita et al. (2011) and Fujita et al. (2012) are the original papers for the data. In 2021, the data were validated and corrected (Tsutaki et al. 2022, TC paper).
DOI: 10.17592/001.2022072210
title: Ice thickness in an area near an area near 75S and 10W, Antarctica, based on JASE ground-based radar surveys

description: This dataset contains the ice thickness data recorded by ground-based radio echo sounding experiment carried out at an area near 75S and 10W in East Antarctica. The data were recorded in the joint Japanese-Swedish JASE traverse survey by NIPR (the 48th and 49th Japanese Antarctic Research Expedition (JARE48 and JARE49)) and Stockholm University. PIs of the joint survey are Shuji Fujita (NIPR, Japan) and Per Holmlund (Stockholm University, Sweden). They used a pulse-modulated VHF radar sounder with a peak transmission power of 1 kW, a center frequency of 179 MHz and a transmitter pulse width of 250 ns. Position of sites are recorded based on GPS with errors within 20 m. Fujita et al. (2011) and Fujita et al. (2012) are the original papers for the data. In 2021, the data were validated and corrected (Tsutaki et al. 2022, TC paper).
DOI: 10.17592/001.2022072205
title: Ice thickness along 750 km traverse route from Kohnen Station to JASE Meeting Point, Antarctica, based on JASE ground-based radar surveys

description: This dataset contains the ice thickness data recorded by ground-based radio echo sounding experiment carried out along a traverse route from Wasa Station in East Antarctica to the JASE Meeting point. The data were recorded in the joint Japanese-Swedish JASE traverse survey by NIPR (the 48th and 49th Japanese Antarctic Research Expedition (JARE48 and JARE49)) and Stockholm University. PIs of the joint survey are Shuji Fujita (NIPR, Japan) and Per Holmlund (Stockholm University, Sweden). This data is for Swedish team's way-in to the meeting point. They used a pulse-modulated VHF radar sounder with a peak transmission power of 1 kW, a center frequency of 179 MHz and a transmitter pulse width of 250 ns. Position of sites are not accurate enough because of GPS problems. Nevertheless, we publish this set of data because the data are very precious in this region of Antarctica. In future, when more data with accurate positioning data are produced, this set of data should be replaced by newer and more reliable data in terms of positioning. We infer that largest positioning error is of the order of 1 km along this part of the traverse. Possible clock errors between GPS and radar are given in the dataset. Fujita et al. (2011) and Fujita et al. (2012) are the original papers for the data. In 2021, the data were validated and corrected (Tsutaki et al. 2022, TC paper).
DOI: 10.17592/001.2022071201
title: Kitami observations dataset associated with "Comparison of the depolarization measurement capability of a lidar ceilometer with cloud particle sensor sondes: A case study of liquid water clouds"

description: This repository includes the datasets of Cloud Particle Sensor sonde (CPS sonde) and a ceilometer (Ceilometer) at Kitami City in Japan in March 2022 for the paper entitled "Comparison of the depolarization measurement capability of a lidar ceilometer with cloud particle sensor sondes: A case study of liquid water clouds" by J. Inoue and K. Sato.
DOI: 10.17592/002.2022100393
title: Antarctic ship-borne ceilometer

description: Kuji, M., Fujimoto, R., Miyagawa, M., Funada, R., Hori, M., Kobayashi, H., Koga, S., Matsushita, J., and Shiobara, M. Cloud fractions estimated from shipboard whole-sky camera and ceilometer observations. Trans. JSASS Aerospace Tech. Japan. 2016, 14, 7-13. Kuji, M., Murasaki, A., Hori, M., and Shiobara M. Cloud fractions estimated from shipboard whole-sky camera and ceilometer observations between East Asia and Antarctica. J. Meteor. Soc. Japan. 2018, 96, 201-214. doi:10.2151/jmsj.2018-025.
DOI: 10.17592/001.2022101701
title: Cosmogenic nuclide surface exposure data and relative sea levels presented "Regional sea-level highstand triggered Holocene ice sheet thinning across coastal Dronning Maud Land, East Antarctica"

description: This data set contains cosmogenic nuclide surface exposure data from Dronning Maud Land, East Antarctica and relative sea levels are calculated based on original and refined ICE6G ice-load models, presented in "Regional sea-level highstand triggered Holocene ice sheet thinning across coastal Dronning Maud Land, East Antarctica".
DOI: 10.17592/001.2022093001
title: Drone meteorological dataset associated with "Wind speed measurement by an inexpensive and lightweight thermal anemometer on a small UAV"

description: This repository includes the datasets of meteorological profiles obtained by a drone over the Sea of Okhotsk during the cruise of Patrol Vessel Soya in February 2022. The data was used in a paper entitled "Wind speed measurement by an inexpensive and lightweight thermal anemometer on a small UAV" by J. Inoue and K. Sato.
DOI: 10.17592/001.2021071401
title: Physical and chemical oceanographic data during Umitaka-maru cruise of the 60th Japanese Antarctic Research Expedition in January 2019

description: The Southern Ocean connects all major ocean basins and plays a pivotal role in the meridional overturning circulation of the global oceans. High-quality physical (temperature, salinity, and dissolved oxygen) and chemical (nutrients) oceanographic data from the Southern Ocean are thus critical for an improved understanding of future climates. As part of the 60th Japanese Antarctic Research Expedition, and also as a part of annually conducted monitoring observations, we have obtained high-quality Conductivity-Temperature-Depth (CTD) and water sampling data (salinity, dissolved oxygen, and nutrients) at 6 sites located along a 110E transect in January 2019. Sea surface temperature and salinity were obtained continuously with a thermosalinograph (TSG) along the cruise track between the ports of Fremantle and Hobart, except within the Australian Exclusive Economic Zone. Data quality was validated by following as far as possible the recommendations for instruments and methods of the Global Ocean Ship-Based Hydrographic Investigation Program.
DOI: 10.17592/001.2022081902
title: Mooring observation data in the Cape Darnley polynya, Antarctica, 2010-2011 (JARE-51)

description: We conducted mooring observations with acoustic Doppler current profilers (ADCPs) and conductivity-temperature (CT) recorders inside the Cape Darnley polynya throughout winter for the first time. Two moorings were deployed near the shore (a1: bottom depth 183 m) and the shelf edge (a2: bottom depth 270 m). Each mooring was equipped with an Ice Profiling Sonar (IPS: ASL Environmental Sciences, IPS4 420 kHz), an upward-looking acoustic Doppler current profiler (ADCP: RD Instruments Workhorse Sentinel 300 kHz), and conductivity-temperature recorders (CT-recorders: SeaBird SBE-37 MicroCAT) from the top. The ADCPs at a1 and a2 measured the volume backscatter strength (SV) in addition to the current velocity for 9 and 10 layers of bin, respectively, with the 8 m interval. The pre-deployment calibration demonstrated a temperature accuracy of 2 mK and a salinity accuracy of 4 X 10-3. ADCP and CT-recorder depths were calculated from the pressure by the IPS pressure sensor and the tilt measured by the ADCP with an assumption that the mooring line was straight. In this region, the iceberg tongue in the east creates a risk of an iceberg attack on the moorings. In fact, the mooring at a2 was attacked by an iceberg twice, which was recorded by the pressure sensor as rapid dives. Fortunately, both moorings survived for one year.
DOI: 10.17592/001.2021072001
title: Methane flux observation at Gulkana Glacier terminus, Alaska in July 2019.

description: We conducted CH4 flux measurements by the closed chamber technique at 18 locations near the terminus of the Gulkana Glacier, the Alaska Range, in mid-July 2019. We also measured suppoted data of air temperature, EC of the water, CO2 flux.
DOI: 10.17592/001.2022070501
title: Biogeochemical data of landfast sea ice in Lutzow-Holm Bay during JARE56-60

description: Biogeochemical data of landfast sea ice in Lutzow-Holm Bay during JARE56-60
DOI: 10.17592/001.2022072204
title: Ice thickness along 505 km traverse route from JASE Meeting Point to Dome Fuji, Antarctica, based on JASE ground-based radar surveys

description: This dataset contains the ice thickness data recorded by ground-based radio echo sounding experiment carried out along traverse route from the JASE Meeting point to Dome Fuji, the second highest dome in East Antarctica,. The data were recorded in the joint Japanese-Swedish JASE traverse survey by NIPR (the 48th and 49th Japanese Antarctic Research Expedition (JARE48 and JARE49)) and Stockholm University. PIs of the joint survey are Shuji Fujita (NIPR, Japan) and Per Holmlund (Stockholm University, Sweden). JARE used a pulse-modulated VHF radar sounder with a peak transmission power of 1 kW, a center frequency of 179 MHz and a transmitter pulse width of 500 ns. Position of sites is accurate (~20 m) using continuous GPS measurements. Fujita et al. (2011) and Fujita et al. (2012) are the original papers for the data. Later, based on validation by Tsutaki et al. (2021), a correction (+37 m) was applied to all the data. Thickness data with a number "-9999" means that bed echo could not be identified in the A-scope, which means that ice is thicker than our detection limit (from 2900 m to 3500 m depending on locations).
DOI: 10.17592/001.2022072203
title: Ice thickness along 380 km traverse route along a ridge from Dome Fuji to JASE Meeting Point, Antarctica, based on JASE ground-based radar surveys

description: This dataset contains the ice thickness data recorded by ground-based radio echo sounding experiment carried out along a traverse route from Dome Fuji, the second highest dome in East Antarctica, to the JASE Meeting point along the ice sheet ridge. The data were recorded in the joint Japanese-Swedish JASE traverse survey by NIPR (the 48th and 49th Japanese Antarctic Research Expedition (JARE48 and JARE49)) and Stockholm University. PIs of the joint survey are Shuji Fujita (NIPR, Japan) and Per Holmlund (Stockholm University, Sweden). JARE used a pulse-modulated VHF radar sounder with a peak transmission power of 1 kW, a center frequency of 179 MHz and a transmitter pulse width of 500 ns. Position of sites is accurate (~20 m) using continuous GPS measurements. Fujita et al. (2011) and Fujita et al. (2012) are the original papers for the data. Later, based on validation by Tsutaki et al. (2021), a correction (+37 m) was applied to all the data. Thickness data with a number "-9999" means that bed echo could not be identified in the A-scope, which means that ice is thicker than our detection limit (from 2900 m to 3500 m depending on locations).
DOI: 10.17592/001.2022072201
title: Ice thickness along 130 km traverse from Dome Fuji to East 130 km, Antarctica, based on JARE ground-based radar surveys: JARE37 data

description: This dataset contains the ice thickness data recorded by radio echo sounding experiment carried out at Dome Fuji, the second highest dome in East Antarctica, and along a 130 - km - long traverse line from the dome to the east 130 km point, East Antarctica. The data was recorded by the 37th Japanese Antarctic Research Expedition (JARE37) using a pulse-modulated VHF radar sounder with a peak transmission power of 1kW, a center frequency of 179 MHz and a transmitter pulse width of 250 or 60 ns. The data were edited every 1/3 km along the traverse line. Fujita et al.(1999) is the original paper for the data. Later, based on validation byTsutaki et al. (2021), a correction (-1 m) was applied to all of the data.
DOI: 10.17592/001.2022072001
title: Ice thickness along 1150 km traverse from 150 km south of Dome Fuji to S16, Antarctica, based on JARE ground-based radar surveys: JARE37 data

description: This dataset contains the ice thickness data recorded by radio echo sounding experiment carried out at Dome Fuji, the second highest dome in East Antarctica, and along a 1150 - km - long traverse line from the dome to the coast, East Antarctica. The data was recorded by the 37th Japanese Antarctic Research Expedition (JARE37) using a pulse-modulated VHF radar sounder with a peak transmission power of 1kW, a center frequency of 179 MHz and a transmitter pulse width of 250 or 60 ns. The data were edited every 1/3 km along the traverse line. Fujita et al.(1999) is the original paper for the data. Later, Based on validation by Tsutaki et al. (2021), a correction (-1 m) was applied to all of the data.
DOI: 10.17592/001.2022022102
title: Geographical positioning data from Argo buoys during MOSAiC expedition

description: Geographical position (Lon, Lat) data at 10-min interval from 3 sets of Argo Buoys, manufactured by Marlin Yug Ltd (model = IceST/20DP). ID of buoys: 181891, 181892, 181893.