On Today’s Zero Limits Podcast I chat with Greg Lapin current Law Enforcement SWAT Operator and Lapin owns an exceptional jiu jitsu academy in Mandeville, Louisiana. Lapin spent eight years as a Louisiana Law Enforcement Officer with the majority of his time in Special Investigation and Narcotics units. He went on to work for Triple Canopy conducting high threat protection for the Department of State in conflict zones. Lapin was then recruited for a Department of Defense program in which he also worked in conflict zones while deployed. He has conducted various missions for both government and non-government clients around the globe. Lapin is currently a Sheriffs Deputy assigned to SWAT, an instructor for both firearms and Brazilian Jiu-jitsu, and is also an avid USPSA competitive shooter. Let’s GO!McQuilty developed resilience, a positive mindset, and fought back to be deployed again. He deployed to Afghanistan in 2011 with the 2nd Battalion, Royal Australian Regiment. On the 13 August 2011, McQuilty’s life changed again, forever. McQuilty was Wounded-in-Action by an improvised explosive device detonated under his vehicle. The vehicle was thrown ten metres from the blast site, McQuilty was ejected from the rear hatch and thrown thirty metres and landed on the side of the road headfirst. Let’s GO!On today’s Zero Limits Podcast I chat with Chris May former Australian Army Armoured Corps crewman of the ASLAV and Bushmaster PMV. Chris joined the army at the age of 17 with his first posting was to Brisbane to C Squadron, 2nd 14th Light Horse Regiment ( Queensland Mounted Infantry). Chris’s brother Scott was already posted there as he had joined in mid ‘05. He then posted to B Squadron 3rd / 4th Cavalry Regiment in Townsville in 2009 and was immediately attached to Bravo Company on Mentoring and Reconstruction Task Force 2 (MRTF2) Afghanistan with 1 RAR Battle Group. He deployed again in 2011 whilst still at B 3/4, this time with the Mentoring Task Force 3 (MTF3) as part of the 2 RAR battle group Afghanistan. In September 23rd, 2011 the PMV Chris was commanding struck an IED which resulted in destroying the vehicle and both the driver and Chris were wounded in action with both escaping serious injury. Listen in for more Let’s GO!Coco enlisted into the Australian Army on 7 December 1999, into the Medical Corps. He wanted to save lives, and he was very good at his job. He would apply these lessons in East Timor in 2001 treating children and adults impacted by the conflict. All his training would not prepare him to see the horrors of war in Iraq in 2006 and his mind was injured. Upon returning home McQuilty delved into a nightmare ridden life, consuming alcohol to drown out the horrors of his time in Iraq. He was lucky to have his wife, who along with their two kids saved him from a perilous journey of minimal sleep, nightmares, flashbacks and suicidal thoughts.
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ändrade förutsättningar för bland annat renskötseln. Tillsammans med forskare med kompetens inom klimatmodellering och miljö- och urfolksrätt, renskötare från flera samebyar och Svenska Samernas Riksförbund fokuserar vi nu på att ta fram förslag på hur konsekvenserna av klimatförändringarna bäst bedöms innan beslut om förändrad markanvändning fattas. Laboratory experiments and point observations, for instance in wetlands, have shown evidence that microbial sulfate reduction (MSR) can lower sulfate and toxic metal concentrations in acid mine drainage (AMD). We here hypothesize that MSR can impact the fate of AMD in entire catchments. To test this, we developed a sulfur isotope fractionation and mass-balance method, and applied it at multiple locations in the catchment of an abandoned copper mine (Nautanen, northern Sweden). Results showed that MSR caused considerable, catchment-scale immobilization of sulfur corresponding to a retention of 27 ± 15% under unfrozen conditions in the summer season, with local values ranging between 13 ± 10% and 53 ± 18%. Present evidence of extensive MSR in Nautanen, together with previous evidence of local MSR occurring under many different conditions, suggest that field-scale MSR is most likely important also at other AMD sites, where retention of AMD may be enhanced through nature-based solutions. More generally, the developed isotope fractionation analysis scheme provides a relatively simple tool for quantification of spatio-temporal trends in MSR, answering to the emerging need of pollution control from cumulative anthropogenic pressures in the landscape, where strategies taking advantage of MSR can provide viable options.
Climate in the Arctic has warmed at a more rapid pace than the global average over the past few decades leading to weather, snow, and ice situations previously unencountered. Reindeer herding is one of the primary livelihoods for Indigenous peoples throughout the Arctic. To understand how the new climate state forces societal adaptation, including new management strategies and needs for preserved, interconnected, undisturbed grazing areas, we coupled changes in temperature, precipitation, and snow depth recorded by automatic weather stations to herder observations of reindeer behaviour in grazing areas of the Laevas Sami reindeer herding community, northern Sweden. Results show that weather and snow conditions strongly determine grazing opportunities and therefore reindeer response. We conclude that together with the cumulative effects of increased pressures from alternative land use activities, the non-predictable environmental conditions that are uniquely part of the warming climate seriously challenge future reindeer herding in northern Sweden.Observational data show that climate in the Southern Ocean region is rapidly changing. However, past the instrumental period, our understanding of climate variability in the region is limited by a scarcity of highresolution palaeoclimate records. Alpine glaciers, present on many Southern Ocean islands, may provide such data because changes in their mass balance, extent and erosion rates often mark a response to climate shifts. Rock flour, the fine-grained fraction of the glacial erosion process, is suspended in meltwater streams and transferred into the sediments of downstream lakes, continuously recording glacier variations. Here, we utilize this relationship to present a reconstruction of the Late Holocene glacier history of subantarctic South Georgia, using sediments from the glacier-fed Middle Hamberg Lake. To fingerprint a glacial erosion/size signal, we used titanium counts, validated against changes in sediment density and grain size, allowing a continuous reconstruction of glacier variations over the past similar to 1250 years. Together with local moraine evidence and supporting evidence from other Southern Hemisphere glaciers on New Zealand and in Patagonia, our findings reveal a series of consecutively diminishing Late Holocene advances. In addition to a glacier maximum before 1250 cal a BP, these include a twostage Litle Ice Age with advances around 300 and 120 cal a BP, in line with evidence from southern Patagonia. In addition, we present evidence for an unreported retreat behind present limits around 500 cal BP.
An emerging solution in mine waste remediation is the use of biological processes, such as microbial sulfate reduction (MSR), to immobilize metals, reducing their bioavailability and buffering the pH of acid mine drainage. Apart from laboratory tests and local observations of natural MSR in, for example, single wetlands, little is known about spatiotemporal characteristics of freshwater MSR from multiple locations within entire hydrological catchments. We here applied an isotopic fractionation (δ34S values in SO42−) and a Monte Carlo-based mixing analysis scheme to detect MSR and its variation across two major mining regions (Imetjoki, Sweden and Khibiny, Russia) in the Arctic part of Europe under different seasonal conditions. Results indicate a range of catchment-scale MSR values in the Arctic of ∼5%–20% where the low end of the range was associated with the non-vegetated, mountainous terrain of the Khibiny catchment, having low levels of dissolved organic carbon (DOC). The high end of the range was related to vegetated conditions provided by the Imetjoki catchment that also contains wetlands, lakes, and local aquifers. These prolong hydrological residence times and support MSR hot spots reaching values of ∼40%. The present results additionally show evidence of MSR persistence over different seasons, indicating large potential, even under relatively cold conditions, of using MSR as part of nature-based solutions to mitigate adverse impacts of (acid) mine drainage. The results call for more detailed investigations regarding potential field-scale correlations between MSR and individual landscape and hydroclimatic characteristics, which, for example, can be supported by the isotopic fractionation and mixing scheme utilized here.Jag är professor i geografi, med naturgeografisk inriktning och forskar om effekter av klimatförändringar i alpina och polära miljöer med fokus på snö, glaciärer och vatten. Jag var mellan 2005 och 2020 föreståndare för Tarfala forskningsstation, Kebnekaise. Stationens verksamhet utvecklades och blev en nationell och internationell forskningsinfrastruktur med stöd från Vetenskapsrådet och EU genom SITES och INTERACT. Pollution from small historical mining sites is usually overlooked, in contrast to larger ones. Especially in the Arctic, knowledge gaps remain regarding the long-term mine waste impacts, such as metal leakage, on water quality. We study the small copper (Cu) mines of Nautanen, northern Sweden, which had been in operation for only six years when abandoned approximately 110 years ago in 1908. Measurements from field campaigns in 2017 are compared to synthesized historical measurement data from 1993 to 2014, and our results show that concentrations of Cu, Zn, and Cd on-site as well as downstream from the mining site are order(s) of magnitude higher than the local background values. This is despite the small scale of the Nautanen mining site, the short duration of operation, and the long time since closure. Considering the small amount of waste produced at Nautanen, the metal loads from Nautanen are still surprisingly high compared to the metal loads from larger mines. We argue that disproportionately large amounts of metals may be added to surface water systems from the numerous small abandoned mining sites. Such pollution loads need to be accounted for in sustainable assessments of total pollutant pressures in the relatively vulnerable Arctic environment. 2008. Laura Cunningham (et al.). European Climate of the Last Millennium, Millennium Milestone meeting 2, Cala Millor, Mallorca, 13th-15th March 2008, 80-81Here we present a lake sediment study from west central Sweden that covers the last thousand years. The study site Lake Spåime is a shallow, hydrologically open lake situated above the present tree line. We applied chironomid analysis with the aim to reconstruct mean July air temperature at a high temporal resolution and we evaluated our reconstruction with significance tests and comparison with observed meteorological data. We examined the relationship between changes in chironomid-inferred July temperature, isotope hydrology and minerogenic detrital input. We also assessed the influence of running water and semi-terrestrial/terrestrial chironomids. The inferred July air temperatures ranged from 8.5˚C to 11.6˚C (mean 9.6˚C) over the past millennium. The temperatures inferred with running water- and terrestrial taxa removed was similar, but with a 0.6 ˚C higher amplitude. The results of significance testing were inconclusive. Comparison with meteorological data showed that the chironomid-based July air temperatures were similar during the last 110 years. Individual years when chironomid-inferred July air temperatures were lower than the instrumental data were characterized by low June air temperatures and high amounts of winter precipitation. From this, we assume that late snowmelt led to cool melt water input in July which in turn caused a decoupling between water and air temperatures causing too low inferred temperatures. Inferred July temperatures show similarities and discrepancies with reconstructions derived from other proxies in the region, such as tree-ring and sea surface temperature records, and fail to reconstruct the cold summer conditions characteristic of the years between AD 1650 and 1750. We conclude that the Spåime July temperature reconstruction was partly biased, possibly because of major changes in the Spåime catchment system that influenced the chironomids. For example, changes in hydrology caused by shifts in seasonality and amount of precipitation may have triggered changes in sediment erosion and deposition rates, affecting the chironomid composition to a larger extent than mean July air temperatures. Future challenges include examination of the temperature sensitivity of chironomid taxa and continued critical assessment of individual chironomid inferred temperature reconstructions, not only against other temperature proxies but also against proxies for variations in hydrology. In Arctic alpine regions, glacio-lacustrine environments respond sensitively to variations in climate conditions, impacting, for example,glacier extent and rendering former ice-contact lakes into ice distal lakes and vice versa. Lakefloors may hold morphological records of past glacier extent, but remoteness and long periods of ice cover on such lakes make acquisition of high-resolution bathymetric datasets challenging. Lake Tarfala and Kebnepakte Glacier, located in the Kebnekaise mountains, northern Sweden, comprise a small, dynamic glacio-lacustrine system holding a climate archive that is not well studied. Using an autonomous surface vessel, a high-resolution bathymetric dataset for Lake Tarfala was acquired in 2016, from which previously undiscovered end moraines and a potential grounding line feature were identified. For Kebnepakte Glacier, structure-from-motion photogrammetry was used to reconstruct its shape from photographs taken in 1910 and 1945. Combining these methods connects the glacial landform record identified at the lakefloor with the centennial-scale dynamic behaviour of Kebnepakte Glacier. During its maximum 20(th) century extent, attained c. 1910, Kebnepakte Glacier reached far into Lake Tarfala, but had retreated onto land by 1945, at an average of 7.9 m year(-1). We studied the variability of elemental carbon (EC) over 3 years (2009-11) in the winter snowpack of Storglaciaren, Sweden. The goal of this study was to relate the seasonal variation in EC to specific snow accumulation events in order to improve understanding of how different atmospheric circulation patterns control the deposition of EC. Specifically, we related meteorological parameters (e.g. wind direction, precipitation) to snow physical properties, EC content, stable-isotope 8180 ratios and anion concentrations in the snowpack. The distribution of EC in the snowpack
varied between years. Low EC contents corresponded to a predominance of weather systems originating in the northwest, i.e. North Atlantic. Analysis of single layers within the snowpacks showed that snow layers enriched in heavy isotopes coincided predominantly with low EC contents but high chloride and sulfate concentration. Based on this isotopic and geochemical evidence, snow deposited during these events had a strong oceanic, i.e. North Atlantic, imprint. In contrast, snow layers with high EC content coincided with snow layers depleted in heavy isotopes but high anion concentrations, indicating a more continental source of air masses and origin of EC from industrial emissions.In this article, we present results from a palaeolimnological study from Lake Vuoksjavratje in the mountain tundra region in the Vindelfjallen Mountains, northwest Sweden. We suggest that the influence of precipitation may be one of the factors causing discrepancies between chironomid-based late-Holocene July temperature (JulyT) reconstructions from Fennoscandia. We combine quantitative temperature reconstruction using chironomids for the last 5100 years with qualitative analysis of chironomid composition and geochemical analyses, such as x-ray fluorescence (XRF), total organic carbon (TOC) and C/N analysis. The studied sequence is dated by Pb-210, Cs-137 and 11 C-14 datings from terrestrial macrofossils. The aim of the study was to use chironomids to reconstruct late-Holocene summer temperature variation on a multi-centennial to centennial timescale and to use geochemical data to identify periods during which the changes in chironomid composition might have been forced by environmental variables other than temperature, such as within lake processes or precipitation. Based on ordination techniques, and a comparison between chironomid-inferred JulyTs and changes in minerogenic sedimentation with regional temperature and wetness records, it is concluded that the JulyT signal was modulated by precipitation. The proxies indicate that both JulyT and annual precipitation have influenced the chironomid communities in Lake Vuoksjavratje, and that catchment-related processes caused by enhanced precipitation have overridden the summer temperature signal between 3000 and 2200 cal. yr BP, and between 1050 and 100 cal. yr BP.
ation. The delta O-18(diatom) records reveal common responses to precipitation forcing over the past millennium. Relatively wet summers are inferred from delta O-18(diatom) between 1000 and 1080 AD, 1300 and 1440 AD, and during the early 19th century, coincided with periods of high cloud cover inferred from tree-ring carbon isotopes, and other data for high Arctic Oscillation index. While relatively dry summers with increasing influence of winter snow are indicated between 1600 and 1750 AD. The co-response between carbon isotopes in trees and oxygen isotopes in diatoms strengthens the relationship between cloud cover and precipitation and the hypothesis that these changes were the result of significant regional shifts in atmospheric circulation.Reindeer and reindeer herders in the circumpolar North are exposed to harsh and often hard-to-predict weather conditions. Herding communities have previously adapted to these external disturbances by flexible pasture use, seasonal mobility, changing herding practices, diversifying livelihoods and continuously developing traditional or experience-based knowledge. However, few places in the world experience ongoing climate change as clearly and rapidly as the high northern latitudes. The effects of climate change and increased frequency of extreme weather events are transforming the biophysical environment of reindeer husbandry. These changes challenge the adaptive capacity of herders who operate in a landscape they share with, and which is highly impacted by, other forms of land use. Thus, sociopolitical factors play a major role in developing adaptation strategies that are perceived as desirable and possible. This chapter summarizes the observed and expected changes in climate and impacts thereof within the reindeer herding area (RHA) of northern Fennoscandia. The chapter further presents a range of strategies adopted by herders to cope with adverse, seasonal weather conditions and indirect impacts of climate change. Finally, it situates these strategies in the context of more proactive and institutional adaptation.
Snow particle size is an important parameter strongly affecting snow cover broadband albedo from seasonally snow covered areas and ice sheets. It is also important in remote sensing analyses because it influences the reflectance and scattering properties of the snow. We have developed a digital image processing method for the capture and analysis of data of snow particle size and shape. The method is suitable for quick and reliable data capture in the field. Traditional methods based on visual inspection of samples have been used but do not yield quantitative data. Our method provides an alternative to both simpler and more complex methods by providing a tool that limits the subjective effect of the visual analysis and provides a quantitative particle size distribution. The method involves image analysis software and field efficient instrumentation in order to develop a complete process-chain easily implemented under field conditions. The output from the analysis is a two-dimensional analysis of particle size, shape, and distributions for each sample. The results of the segmentation process were validated against manual delineation of snow particles. The developed method improves snow particle analysis because it is quantitative, reproducible, and applicable for different types of field sites.Lacustrine sediments are often used for paleoclimate reconstructions as continuous archives of several physical and biological proxies. The relation between autochthonous and allochthonous sedimentation in alpine lakes is a complex system that may cause difficulties when interpreting biological and physical parameters. Results from previous studies of alpine lakes in northern Sweden have demonstrated that non-glacial processes produce minerogenic lake deposits with similar physical characteristics (density, LOI, magnetic susceptibility, grain-size) as those that have been associated with glacier fluctuations in proglacial lakes. In this study of two consecutive proglacial alpine lakes we show that fluvial redeposition of alluvial fan deposits significantly affects the Holocene lake sedimentation. Depending on the geomorphological setting, such fluvial redeposition signals may actually overprint a glaciofluvial signal. We also show that minerogenic laminations of fluvial origin are impossible to separate from the type of laminations usually used to infer glacier activity using the most common lithological sediment parameters. This emphasizes the complexity of sediment transport system in proglacial (paraglacial) settings where redeposition of older glacial sediment is of major importance. Our results highlight the need for thorough understanding of the geomorphological setting before inferences are made about climate variations from sedimentation in alpine lakes. moth lakes in this study contain sediment sequences with both episodic (turbidites) and continuously deposited sediments. Unfortunately we have too few radiocarbon dates to exactly date the turbidites but it is clear that turbidite layers in any case should be excluded from age model constructions since episodic sedimentation significantly influences the sediment age-depth relationship. In our age-model turbidites cause a potential dating error of several hundred, up to a thousand, years.CERT-SE är Sveriges nationella CSIRT (Computer Security Incident Response Team) med uppgift att stödja samhället i arbetet med att hantera och förebygga IT-incidenter.
Vid tre webbinarier ska forskare och MSB beskriva framtidsbilderna, analyserna och stöden till planering. Webbinarierna genomförs helt online och kostnadsfritt 9, 10, 11 november 2022.I ett förändrat klimat blir det en stor utmaning att hantera naturolyckor som med en dominoeffekt påverkar natur och samhälle på oväntade sätt. Vad kan forskningen bidra med för att förstå och analysera dessa multipla händelser? Vilka metoder och verktyg finns för att kommuner, räddningstjänster och andra ska kunna gå från kunskap till handling i ett förändrat klimat?Krisinformation.se är en webbplats som förmedlar information från myndigheter och andra ansvariga till allmänheten före, under och efter en stor händelse eller kris.Här finns information om MSB:s verksamhet och det stöd som myndigheten erbjuder i arbetet med vägledningar, publikationer och föreskrifter. Vi samarbetar och levererar även andra webbplatser.
In MMA we have two hands, two feet, two knees, two elbows plus all the outcomes that can happen based off a takedown. It’s a lot of things and I’ve been feeling from like 34 to 37 that in that department and solely in that department my reflexes and reaction time took a big dip. It’s not where it used to be when I was 35 even.Here’s the honest truth. I’m still fast, I’m still explosive, I have good endurance. I know so much more about the sport than when I started. There’s just a couple things that as you get older slow down. That’s like the overload sensory from [head] to [heart] and my body doing it. Matchen var Masvidals 52:a i en karriär där han stod för 35-17 i record och han förblir en gigantisk profil inom MMA-världen trots att han inte längre är aktiv. 38-åringen kommer nu fokusera på sin roll som promoter och ägare av kampsportsorganisationerna Gamebred FC och Gamebred Boxing. Men även om planen nu är att vara aktiv utanför buren så kommer Masvidal aldrig säga aldrig. Masvidals främsta period i karriären var utan tvekan segersviten under 2019 där han blev en av sportens allra absolut största stjärnor. Detta när han tog tre raka dominanta segrar via avslut. Först knockade han Darren Till inför dennes hemmapublik i London och han avslutade med att besegra stjärnan Nate Diaz på legendariska Madison Sqaure Garden via TKO. Mellan dessa så kom det mest oförglömliga ögonblicket dock när han knockade den då obesegrade Ben Askren via otroligt spektakulärt flygande knä efter endast 5 sekunder av matchen.Förra månaden på hemmaplan vid UFC 287 valde Masvidal att lägga handskarna på hyllan efter sin fjärde raka förlust efter en tapper insats mot toppfightern Gilbert Burns där denne till slut vann via tydligt enhälligt domslut. Även i sina två senaste förluster mot hatobjektet Colby Covington och den tidigare nämnde Burns visade Masvidal glimtar av det som gjorde honom till en absolut toppfighter men väl medveten om den nivå där han fightades på så känner inte Masvidal att det är värt att fortsätta om han inte kan besegra dem bästa: