Trends in Satellite Earth Observation for Permafrost Related Analyses—A Review
Abstract
:1. Introduction
1.1. Permafrost in a Warming World
1.2. Efforts in Satellite Earth Observation for Monitoring Permafrost and Permafrost-Affected Landscapes
1.3. Objectives of This Review
2. Review Methodology
- The number of published articles per year
- The number of studies per country
- The nationality of the first authors institution
- Frequently investigated study regions across the globe
- The frequency of investigated environmental categories
- The frequency of investigated research foci
- Applied spatio-temporal resolutions of remote sensing data
- Observed temporal coverage of time series analyses
- Studied spatial scales
- Frequencies of remote sensing platforms
- Utilized sensor types and sensor combinations
3. Results
3.1. Temporal Development of Permafrost Related Studies
3.2. Distribution of Study Countries and First Author Institution Nationalities
3.3. Spatial Distribution of Reviewed Articles
3.4. Categorization of Environmental Research Foci
3.4.1. Environmental Research Focus: Atmospheric Features and Processes
3.4.2. Environmental Research Focus: Surface Water Features and Processes
3.4.3. Environmental Research Focus: Surface Land Features and Processes
3.4.4. Environmental Research Focus: Thermal Features and Processes
3.4.5. Environmental Research Focus: Subsurface Features and Processes
3.5. Applied Spatio-Temporal Resolutions of Reviewed Articles
3.6. Platform and Sensor Distribution Across Reviewed Articles
3.7. Relevant and Openly-Available Products for Permafrost-Related Analyses
4. Discussion
5. Conclusions
- The frequency of satellite Earth observation of permafrost related publications increased over the past two decades, with a particular growth during the last 10 years. The total number of publications hereby more than doubled since 2015.
- A strong relationship between the studied country and the first authors institution nationality could be observed. 93% of articles with a study focus in China were conducted by Chinese institutions, 80% of studies carried out in the United States are associated with American institutions and 58% of investigations in Canada are linked to Canadian institutions.
- Most studies (75%) were conducted in Russia, China, the United States and Canada.
- While the majority of first authors are affiliated with American (28%), Chinese (18%), German (15%) or Canadian (14%) institutions, first authors from Russian institutions (2%) appear underrepresented, potentially due to the exclusion of non-English articles.
- Geographical focus regions across the reviewed articles are revealed to be the North Slope Borough and its Arctic Coastal Plain in Alaska, the Mackenzie Delta in Canada, the Lena Delta and Yamal and Gydan Peninsulas in Russia as well as the Beiluhe region on the Qinghai–Tibet Plateau (QTP) in China.
- Many remote areas especially in the continuous permafrost zone of Russia and the Nunavut territory in Canada are still only sparsely covered by satellite remote sensing studies.
- The majority of studies (94%) is distributed across the Northern Hemisphere, whereas only a few articles (6%) investigated the Southern Hemisphere due to the confined distribution of permafrost in alpine regions for example, Andes and ice-free areas for example, South Shetland Islands in the Antarctic.
- Almost half (43%) of all reviewed articles studied land surface features/processes, followed by surface water features/processes (25%) and subsurface features/processes (21%). Studies related to thermal features/processes and atmospheric features and processes appear heavily underrepresented with only 7% and 4% of all reviewed publications, respectively.
- The category land surface features/processes is also revealed to have the strongest growing rates of 85 publications during the last five years within the framework of this review, followed by surface water features/processes (48 publications during the last five years), subsurface features/processes (47 publications during the last five years), thermal features/processes (16 publications during the last five years) and atmospheric features/processes (7 publications during the last five years).
- A regional deviation of study foci could be observed, with Canada, Russia and the United States featuring lake extent dynamics as the most common research objective, whereas studies in China mostly focus on surface displacement measurements along the Qinghai–Tibet Railway (QTR).
- Although almost half of all articles employed a time series analysis (10 scenes or more), 39% of which cover less than five years and only 21% cover more than 20 years.
- The majority of studies (62%) are limited to local scales, with only 8% of articles applying their analyses on a circumpolar scale.
- A general trend towards coarser spatial resolutions with increasing study area sizes can be observed and thus, 74% of circumpolar studies conducted their research on spatial resolutions >1000 m.
- The applied spatio-temporal resolution varies across different research topics. Topics such as frost heave/thaw settlement, coastal erosion or thaw slumps are usually conducted on local scales and with high spatial resolution, whereas observations of for example, freeze/thaw dynamics feature large regional or circumpolar extents and lower spatial resolutions.
- More than half (55%) of studies applied optical imagery, followed by SAR (20%). The most frequent platform is hereby aerial (31% of articles), followed by the Landsat satellites (27% of articles). As of right now, imagery from the Sentinel-fleet makes up only a small fraction (6%) of used satellite systems thus far. However, a growing application rate could be observed during the last three years, with Sentinel-1 being applied in 14% and Sentinel-2 in 12% of studies in 2019. Although aerial-exclusive studies have been excluded from this review, it still proved to be the most common platform. A complementary usage of airborne remote-sensing either as a historical reference, for validation or for the analysis of small scale features in conjunction with high-resolution satellite data are thereby explanations.
- Openly available Arctic products enable detailed analysis and validation of many permafrost related parameters. However, many products still lack either in thematic detail, spatial and temporal coverage and/or resolution are often concentrated around specific key regions.
Supplementary Materials
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Name | Objective | Runtime |
---|---|---|
Global Terrestrial Network for Permafrost (GTN-P) [95,96] | Organization and management of permafrost data. | since 1998 |
Swiss Permafrost Monitoring Network (PERMOS) [97,98] | Documentation of the state and changes of mountain permafrost in the Swiss Alps. | since 2000 |
PermaNET–Permafrost Long-Term Monitoring Network [99,100] | Alpine-wide permafrost monitoring. | 2007–2013 |
Permafrost Carbon Network [101] | Quantifying the role of permafrost on future climate change. | since 2011 |
ArcticNet [102,103] | Studying the impacts of climate change in the Canadian North. | since 2003 |
Cooperative Global Air Sampling Network [104] | International effort in gathering regular discrete air flask samples. | since 1967 |
PAGE21 [105] | Studying the vulnerability of permafrost environments and feedback mechanisms associated with rising greenhouse gas emissions. | 2011–2015 |
Circumpolar Active Layer Monitoring (CALM) [106,107] | Observing the response of near-surface permafrost and the active layer to climate change over long (multi-decadal) time scales. | since 1991 |
Thermal State of Permafrost (TSP) [28,108] | Database for assessing the changes in temperatures and distribution of permafrost. | since 2007 |
ESA Atmosphere-Land Interactions Study (ALANIS) [109,110] | Interaction and contribution of boreal Eurasia to greenhouse gas concentration. | 2010–2012 |
ESA Data User Element (DUE) Permafrost [111,112] | Establishment of a satellite based systematic permafrost monitoring program. | 2009–2012 |
ESA GlobPermafrost [113,114] | Development, validation and implementation of permafrost related products by integrating Earth observation data. | 2016–2019 |
ESA CCI Permafrost [91,92] | Development of permafrost maps as Essential Climate Variables (ECV) products via satellite measurements. | 2018–2021 |
Arctic-Boreal Vulnerability Experiment (ABoVE) [115,116] | Major field campaign in Alaska and western Canada to help understand and predict ecosystem responses of climate change in Boreal regions and the Arctic. | since 2015 |
Climate and Cryosphere (CliC) [117,118] | Improve our understanding of the cryosphere and its interactions with the global climate system as well as to strengthen the utilization of cryospheric observations for climate change detection. | since 2001 |
Next-Generation Ecosystem Experiments (NGEE) Arctic [119,120] | Improving our predictive understanding of carbon-rich Arctic system feedbacks and processes to the climate. | 2012–2022 |
Study of Environmental Arctic Change (SEARCH) [121,122] | Understanding the impact of degrading permafrost and shrinking land/sea ice on the Arctic and global systems. | since 2001 |
PermaSAR [123] | Development of methodologies to detect subsidence through remote sensing analysis in permafrost regions. | 2015–2019 |
SatPerm-Satellite-based Permafrost Modeling across a Range of Scales [124] | Investigating the feasibility of satellite data sets as input for permafrost modeling. | 2015–2018 |
COmbining remote sensing and field studies for assessment of Landform Dynamics and permafrost state on Yamal (COLD Yamal) [125] | Development of methodologies for monitoring permafrost and related land surface features on the Yamal peninsula. | 2013–2016 |
Horizon 2020 Nunataryuk [126,127] | Analysing the impacts of thawing subsea and coastal permafrost and developing mitigation strategies for the Arctic coastal population. | 2017–2022 |
Modular Observation Solutions for Earth Systems (MOSES) [128] | A joint observing system that primarily targets four events: hydrological extreme events, ocean eddies, heat waves and the thawing of permafrost. | 2017–2021 |
PETA-CARB [129] | Quantification of the distribution, amount and vulnerability of deep carbon stocks in permafrost deposits. | 2013–2018 |
CARBOPERM [130] | Investigations in the formation, turnover and the release of organic carbon stored in northern Siberian permafrost landscapes. | 2013–2016 |
KoPf [131] | Joint research project dedicated to examine carbon dynamics in permafrost-affected northeastern Siberian landscapes via mathematical models and field observations. | 2017–2020 |
Changing Arctic Carbon cycle in the cOastal Ocean Near-shore (CACOON) [132] | Quantifying the effects of thawing terrestrial permafrost and changing freshwater exports of organic matter to Arctic coastal waters. | 2018–2021 |
Author | Year | Title |
---|---|---|
Zhang et al. [133] | 2004 | Application of Satellite Remote Sensing Techniques to Frozen Ground Studies |
Kääb et al. [134] | 2005 | Remote sensing of glacier- and permafrost-related hazards in high mountains: an overview |
Kääb [135] | 2008 | Remote sensing of permafrost-related problems and hazards |
National Research Council [136] | 2014 | Opportunities to use remote sensing in understanding permafrost and related ecological characteristics: Report of a workshop |
Arenson et al. [137] | 2016 | Detection and analysis of ground deformation in permafrost environments |
Jorgenson and Grosse [76] | 2016 | Remote Sensing of Landscape Change in Permafrost Regions |
Bartsch et al. [22] | 2016 | Land Cover Mapping in Northern High Latitude Permafrost Regions with Satellite Data: Achievements and Remaining Challenges |
Trofaier et al. [23] | 2017 | Progress in space-borne studies of permafrost for climate science: Towards a multi-ECV approach |
Duncan et al. [93] | 2020 | Space-Based Observations for Understanding Changes in the Arctic-Boreal Zone |
Journal Name | Number of Reviewed Articles | Impact Factor 2019 | Impact Factor 5 Year |
---|---|---|---|
Remote Sensing | 60 | 4.5 | 5 |
Remote Sensing of Environment | 34 | 9.1 | 9.6 |
Permafrost and Periglacial Processes | 29 | 2.7 | 2.7 |
Environmental Research Letters | 28 | 6.1 | 6.7 |
The Cryosphere | 21 | 4.7 | 4.9 |
Geomorphology | 17 | 3.8 | 3.9 |
Journal of Geophysical Research: Biogeosciences | 15 | 3.4 | 4.2 |
Biogeosciences | 14 | 3.5 | 4.2 |
Global Change Biology | 14 | 8.6 | 9.8 |
Journal of Geophysical Research: Earth Surface | 10 | 3.6 | 4 |
Hydrological Processes | 10 | 3.3 | 3.6 |
International Journal of Remote Sensing | 8 | 3 | 2.7 |
Journal of Geophysical Research: Atmospheres | 8 | 3.8 | 4.3 |
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing | 7 | 3.8 | 3.9 |
Science of the Total Environment | 7 | 6.6 | 6.4 |
Scientific Reports | 6 | 4 | 4.6 |
IEEE Transactions on Geoscience and Remote Sensing | 5 | 5.9 | 6 |
Water Resources Research | 5 | 4.3 | 5 |
Nature Communications | 4 | 12.1 | 13.6 |
Nature Geoscience | 3 | 13.6 | 16.1 |
Journal of Applied Remote Sensing | 3 | 1.4 | 1.3 |
GIScience & Remote Sensing | 3 | 6 | 4.2 |
Global and Planetary Change | 3 | 4.4 | 5.1 |
Remote Sensing Letters | 2 | 2.3 | 2.4 |
International Journal of Applied Earth Observation and Geoinformation | 2 | 4.7 | 5.4 |
Frontiers in Earth Science | 2 | 2.7 | NA |
ISPRS Journal of Photogrammetry and Remote Sensing | 2 | 7.3 | 8.6 |
IEEE Geoscience and Remote Sensing Letters | 1 | 3.8 | 3.7 |
Earth System Science Data | 1 | 9.2 | 9.6 |
Palaeogeography, Palaeoclimatology, Palaeoecology | 1 | 2.8 | 3 |
Total | 325 |
Name | Spatial Resolution | Temporal Resolution | Reference |
---|---|---|---|
Greenhouse Gases | |||
Cooperative Global Air Sampling Network | in-situ observations | since 1967 (varies) | [104] |
Snow Cover and Snow Water Equivalent | |||
Global Snow Pack | 500 m | since 2000 (daily) | Dietz et al. [450] |
ESA GlobSnow SWE | 20 km | since 1979 (daily) | Metsämäki et al. [451] |
ESA GlobSnow SE | 1 km | since 1995 (daily) | Larue et al. [452] |
Surface Water | |||
Global WaterPack | 250 m | since 2003 (daily) | Klein et al. [454] |
Global Surface Water | 30 m | since 1984 (monthly) | Pekel et al. [453] |
Permafrost Region Pond and Lake (PeRL) database | <5 m | 2002–2013 | Muster et al. [156] |
Coastal Dynamics | |||
Arctic Coastal Dynamics Database | varies | 2012 | Lantuit et al. [73] |
Land Cover | |||
ESA CCI land cover | 300 m | 1992–2015 (annual) | Plummer et al. [455] |
MODIS land cover | 500 m | since 2001 (annual) | Friedl et al. [456] |
GlobeLand30 | 30 m | 2000, 2010 | Jun et al. [457] |
GLC2000 | 1 km | 2000 | Bartholome and Belward [458] |
Circumpolar Arctic Vegetation Map (CAVM) Raster Version | 1 km | 2003 | Raynolds et al. [162] |
Trends of land surface change from Landsat | 30 m | 1999–2014 | Nitze et al. [179] |
Digital Elevation and Surface Models | |||
ArcticDEM | 2 m | 2016 | Morin et al. [462] |
SRTM | 30 m | 2000 | Farr et al. [460] |
ALOS DSM | 30 m | 2006–2011 | Takaku et al. [461] |
Soil Properties | |||
SoilGrids | 250 m | 2017 | Hengl et al. [463] |
Harmonized World Soil Database | 30 arc-seconds | 2012 | FAO et al. [465] |
Northern Circumpolar Soil Carbon Database version 2 (NCSCDv2) | 0.012 degrees | 2013 | Hugelius et al. [464] |
ESA CCI Soil Moisture | 0.25 degrees | 1978–2019 (daily) | Dorigo et al. [467] |
Freeze/Thaw Dynamics | |||
MEaSUREs Global Record of Daily Landscape Freeze/Thaw Status | 25 km | 1979–2017 (daily) | Kim et al. [468] |
Active Layer Thickness | |||
Circumpolar Active Layer Monitoring (CALM) program | in-situ observations | since 1990 (annual) | Brown et al. [469] |
Borehole Measurements | |||
Thermal State of Permafrost (TSP) program | in-situ observations | 2007–2009 | Biskaborn et al. [95] |
Permafrost Extent and Ground Temperature Maps | |||
Circum-Arctic Map of Permafrost and Ground-Ice Conditions, Version 2 | Scale of 1:10,000,000 | 2002 | Brown et al. [1] |
Permafrost Extent and Ground Temperature Map | 1 km | 2000–2016 | Obu et al. [415] |
Pan-Antarctic map of near-surface permafrost temperatures | 1 km | 2000–2017 | Obu et al. [163] |
Name | Description | Reference |
---|---|---|
Databases | ||
GTN-P database | Active Layer Thaw Depth & Permafrost Temperatures | Biskaborn et al. [95] |
The Permafrost Information System (PerSys) | Portal for GlobPermafrost products, related results and data sets-Including ground and surface temperature, permafrost extent, Freeze/Thaw dynamics and others | Haas et al. [471] |
PANGAEA | Data publisher and library for Earth and environmental science | Diepenbroek et al. [472] |
National Snow & Ice Data Center | Management and distribution of cryospheric data | National Snow and Ice Data Center (NSIDC) [473] |
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Philipp, M.; Dietz, A.; Buchelt, S.; Kuenzer, C. Trends in Satellite Earth Observation for Permafrost Related Analyses—A Review. Remote Sens. 2021, 13, 1217. https://doi.org/10.3390/rs13061217
Philipp M, Dietz A, Buchelt S, Kuenzer C. Trends in Satellite Earth Observation for Permafrost Related Analyses—A Review. Remote Sensing. 2021; 13(6):1217. https://doi.org/10.3390/rs13061217
Chicago/Turabian StylePhilipp, Marius, Andreas Dietz, Sebastian Buchelt, and Claudia Kuenzer. 2021. "Trends in Satellite Earth Observation for Permafrost Related Analyses—A Review" Remote Sensing 13, no. 6: 1217. https://doi.org/10.3390/rs13061217