Supplementary material to "Airborne limb-imaging measurements of temperature, HNO3, O3, ClONO2, H2O and CFC-12 during the Arctic winter 2015/16: characterization, in-situ validation and comparison to Aura/MLS"

Working with satellite data, has long been an issue for users which has often prevented from a wider use of these data because of Volume, Access, Format and Data Combination. The purpose of the Storm Ice Oil Wind Wave Watch System (SIOWS) developed at Satellite Oceanography Laboratory (SOLab) is to solve the main issues encountered with satellite data and to provide users with a fast and flexible tool to select and extract data within massive archives that match exactly its needs or interest improving the efficiency of the monitoring system of geophysical conditions in the Arctic. SIOWS - is a Web GIS, designed to display various satellite, model and in situ data, it uses developed at SOLab storing, processing and visualization technologies for operational and archived data. It allows synergistic analysis of both historical data and monitoring of the current state and dynamics of the "ocean-atmosphere-cryosphere" system in the Arctic region, as well as Arctic system forecasting based on thermodynamic models with satellite data assimilation.

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International Arctic Systems for Observing the Atmosphere: An International Polar Year Legacy Consortium

Bulletin of the American Meteorological Society ◽

10.1175/bams-d-14-00145.1 ◽

2016 ◽

Vol 97 (6) ◽

pp. 1033-1056 ◽

Cited By ~ 30

Author(s):

Taneil Uttal ◽

Sandra Starkweather ◽

James R. Drummond ◽

Timo Vihma ◽

Alexander P. Makshtas ◽

...

Keyword(s):

United States ◽

The United States ◽

Satellite Observations ◽

The Arctic ◽

International Polar Year ◽

Network Measurements ◽

International Polar ◽

In Situ Observations ◽

Arctic Atmosphere

Abstract International Arctic Systems for Observing the Atmosphere (IASOA) activities and partnerships were initiated as a part of the 2007–09 International Polar Year (IPY) and are expected to continue for many decades as a legacy program. The IASOA focus is on coordinating intensive measurements of the Arctic atmosphere collected in the United States, Canada, Russia, Norway, Finland, and Greenland to create synthesis science that leads to an understanding of why and not just how the Arctic atmosphere is evolving. The IASOA premise is that there are limitations with Arctic modeling and satellite observations that can only be addressed with boots-on-the-ground, in situ observations and that the potential of combining individual station and network measurements into an integrated observing system is tremendous. The IASOA vision is that by further integrating with other network observing programs focusing on hydrology, glaciology, oceanography, terrestrial, and biological systems it will be possible to understand the mechanisms of the entire Arctic system, perhaps well enough for humans to mitigate undesirable variations and adapt to inevitable change.

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Geochemical evaluation of the in-situ regolith of Madengi hills of Dodoma, Tanzania. Implication on bedrock mapping and delineating gold mineralization target

Geochemistry Exploration Environment Analysis ◽

10.1144/geochem2021-074 ◽

2021 ◽

pp. geochem2021-074

Author(s):

Godson Godfray

Keyword(s):

Gold Mineralization ◽

Early Stage ◽

Shear Zones ◽

Soil Geochemistry ◽

Residual Soils ◽

Content Type ◽

Geochemical Evaluation ◽

Supplementary Material ◽

Pathfinder Elements

Successful gold exploration projects depend on a piece of clear information on the association between gold, trace elements, and mineralization controlling factors. The use of soil geochemistry has been an important tool in pinpointing exploration targets during the early stage of exploration. This study aimed to establish the gold distribution, the elemental association between gold and its pathfinder elements such as Cu, Zn, Ag, Ni, Co, Mn, Fe, Cd, V, Cr, Ti, Sc, In, and Se and identify lithologies contributing to the overlying residual soils. From cluster analysis, a high similarity level of 53.93% has been shown with Ag, Cd, and Se at a distance level of 0.92. Au and Se have a similarity level of 65.87% and a distance level of 0.68, hence is proposed to be the most promising pathfinder element. PCA, FA, and the Pearson's correlation matrix of transformed data of V, Cu, Ni, Fe, Mn, Cr, and Co and a stronger correlation between Pb and U, Th, Na, K, Sn, Y, Ta and Be shows that source gold mineralization might be associated with both hornblende gneisses interlayered with quartzite, tonalite, and tonalitic orthogneiss. From the contour map and gridded map of Au and its pathfinder elements, it has been noted that their anomalies and target generated are localized in the Northern part of the area. The targets trend ESE to WNW nearly parallel to the shear zones as a controlling factor of Au mineralization emplacement.Supplementary material:https://doi.org/10.6084/m9.figshare.c.5721965

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Quantifying the rate of heterogeneous processing in the Arctic polar vortex with in situ observations of OH

Journal of Geophysical Research Atmospheres ◽

10.1029/2001jd000425 ◽

2002 ◽

Vol 107 (D20) ◽

Cited By ~ 13

Author(s):

T. F. Hanisco

Keyword(s):

Polar Vortex ◽

The Arctic ◽

Heterogeneous Processing ◽

In Situ Observations

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Sentinel-1 SAR Interferometry for Surface Deformation Monitoring in Low-Land Permafrost Areas

Remote Sensing ◽

10.3390/rs10091360 ◽

2018 ◽

Vol 10 (9) ◽

pp. 1360 ◽

Cited By ~ 22

Author(s):

Tazio Strozzi ◽

Sofia Antonova ◽

Frank Günther ◽

Eva Mätzler ◽

Gonçalo Vieira ◽

...

Keyword(s):

Time Series ◽

Surface Displacement ◽

Deformation Monitoring ◽

In Situ Measurements ◽

River Delta ◽

Sar Interferometry ◽

The Arctic ◽

Lena River ◽

Lena River Delta

Low-land permafrost areas are subject to intense freeze-thaw cycles and characterized by remarkable surface displacement. We used Sentinel-1 SAR interferometry (InSAR) in order to analyse the summer surface displacement over four spots in the Arctic and Antarctica since 2015. Choosing floodplain or outcrop areas as the reference for the InSAR relative deformation measurements, we found maximum subsidence of about 3 to 10 cm during the thawing season with generally high spatial variability. Sentinel-1 time-series of interferograms with 6–12 day time intervals highlight that subsidence is often occurring rather quickly within roughly one month in early summer. Intercomparison of summer subsidence from Sentinel-1 in 2017 with TerraSAR-X in 2013 over part of the Lena River Delta (Russia) shows a high spatial agreement between both SAR systems. A comparison with in-situ measurements for the summer of 2014 over the Lena River Delta indicates a pronounced downward movement of several centimetres in both cases but does not reveal a spatial correspondence between InSAR and local in-situ measurements. For the reconstruction of longer time-series of deformation, yearly Sentinel-1 interferograms from the end of the summer were considered. However, in order to infer an effective subsidence of the surface through melting of excess ice layers over multi-annual scales with Sentinel-1, a longer observation time period is necessary.

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