Willmes, Sascha; Heinemann, Günther; Reiser, Fabian (2023): ArcLeads: Daily sea-ice lead maps for the Arctic, 2002-2021, NOV-APR [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.955561
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
The presence of sea-ice leads represents a key feature of the Arctic sea ice cover. Leads promote the flux of sensible and latent heat from the ocean to the cold winter atmosphere and are thereby crucial for air-sea-ice-ocean interactions. Especially in light of the observed trends in Arctic sea-ice extent, and with respect to the projected future changes in the Arctic climate system , the structure and dynamics of leads represent essential information for global change monitoring. We here present daily lead maps for the Arctic, for winter months NOV-APR in the period 2002-2021. The data were derived from MODIS thermal infrared imagery with 1 km² spatial resolution (Reiser et al., 2020). The ArcLeads data set contains daily categorical lead maps including classes for sea ice, leads, clouds and artefacts. The data come in EPSG:3413 (subset) projection and are provided as annual NetCDF files each including lat/lon grids. This is an update to the dataset provided in https://doi.org/10.1594/PANGAEA.917588.
Supplement to:
Reiser, Fabian; Willmes, Sascha; Heinemann, Günther (2020): A New Algorithm for Daily Sea Ice Lead Identification in the Arctic and Antarctic Winter from Thermal-Infrared Satellite Imagery. Remote Sensing, 12(12), 1957, https://doi.org/10.3390/rs12121957
Willmes, Sascha; Heinemann, Günther; Schnaase, Frank (2023): Patterns of wintertime Arctic sea ice leads and their relation to winds and ocean currents. https://doi.org/10.5194/tc-2023-22
Related to:
Reiser, Fabian; Willmes, Sascha; Heinemann, Günther (2020): Daily sea ice lead data for Arctic and Antarctic. PANGAEA, https://doi.org/10.1594/PANGAEA.917588
Project(s):
Funding:
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AFMOSAiC-1_00: Multidisciplinary drifting Observatory for the Study of Arctic Climate
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AWI_PS122_00: Multidisciplinary drifting Observatory for the Study of Arctic Climate / MOSAiC
Federal Ministry of Education and Research (BMBF), grant/award no. 03F0831C: Vorhaben: Atmosphäre-Land-Meereis-Ozean Wechselwirkung
German Research Foundation (DFG), grant/award no. 5472008: Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas
German Research Foundation (DFG), grant/award no. HE 2740/22: Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas
German Research Foundation (DFG), grant/award no. WI 3314/3: Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas
Coverage:
Latitude: 90.000000 * Longitude: 0.000000
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | File name | File name | Willmes, Sascha | |||
| 2 | File format | File format | Willmes, Sascha | |||
| 3 | Binary Object (File Size) | Binary (Size) | Bytes | Willmes, Sascha | ||
| 4 | Binary Object | Binary | Willmes, Sascha |
Change history:
2023-07-03T11:38:14 – The time variable in each annual file was not correct for the months of JAN-APR. Here, the year needed to be increased by +1
2023-11-02T09:38:36 – Update of NetCDF files: few days in the data set are affected by corrupted arrays, in which the "no data" flag was not properly set in old version
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Basic curation (CurationLevelB)
Size:
63 data points
Data
All files referred to in data matrix can be downloaded in one go as ZIP or TAR. Be careful: This download can be very large! To protect our systems from misuse, we require to sign up for an user account before downloading.
| 1 File name | 2 File format | 3 Binary (Size) [Bytes] | 4 Binary |
|---|---|---|---|
| 200203_ArcLeads | NC | 484.1 MBytes | 200203_ArcLeads.nc |
| 200304_ArcLeads | NC | 479.4 MBytes | 200304_ArcLeads.nc |
| 200405_ArcLeads | NC | 465.1 MBytes | 200405_ArcLeads.nc |
| 200506_ArcLeads | NC | 468.4 MBytes | 200506_ArcLeads.nc |
| 200607_ArcLeads | NC | 458.3 MBytes | 200607_ArcLeads.nc |
| 200708_ArcLeads | NC | 472.2 MBytes | 200708_ArcLeads.nc |
| 200809_ArcLeads | NC | 483.1 MBytes | 200809_ArcLeads.nc |
| 200910_ArcLeads | NC | 477.7 MBytes | 200910_ArcLeads.nc |
| 201011_ArcLeads | NC | 469.3 MBytes | 201011_ArcLeads.nc |
| 201112_ArcLeads | NC | 469.1 MBytes | 201112_ArcLeads.nc |
| 201213_ArcLeads | NC | 469.8 MBytes | 201213_ArcLeads.nc |
| 201314_ArcLeads | NC | 463.1 MBytes | 201314_ArcLeads.nc |
| 201415_ArcLeads | NC | 462.1 MBytes | 201415_ArcLeads.nc |
| 201516_ArcLeads | NC | 449.3 MBytes | 201516_ArcLeads.nc |
| 201617_ArcLeads | NC | 455.9 MBytes | 201617_ArcLeads.nc |
| 201718_ArcLeads | NC | 451.5 MBytes | 201718_ArcLeads.nc |
| 201819_ArcLeads | NC | 471 MBytes | 201819_ArcLeads.nc |
| 201920_ArcLeads | NC | 455 MBytes | 201920_ArcLeads.nc |
| 202021_ArcLeads | NC | 463.2 MBytes | 202021_ArcLeads.nc |
| 202122_ArcLeads | NC | 457.4 MBytes | 202122_ArcLeads.nc |
| import_ArcLeads | PY | 778 Bytes | import_ArcLeads.py |