To meet the most ambitious 1.5º C climate goal requires a rapid phase-out of fossil fuels and mass use of renewables. However, new international research by the Institute of Environmental Science and Technology of the Universitat Autònoma de Barcelona (ICTA-UAB) warns that green energy projects can be as socially and environmentally conflictive as fossil fuel projects. While renewable energies are often portrayed as being environmentally sustainable, this new study cautions about the risks associated with the green energy transition, arguing for an integrated approach that redesigns energy systems in favor of social equity and environmental sustainability. The research, which analyzes protests over 649 energy projects, has been recently published in the journal Environmental Research Letters. The study, authored by an international group of researchers with a large presence of the ICTA-UAB and led by Dr. Leah Temper, from McGill University, draws on data from the Global Atlas of Environmental Justice (EJAtlas), an online database by ICTA-UAB that systematizes over 3000 ecological conflicts. The research examines what energy projects are triggering citizen mobilizations, the concerns being expressed as well as how different groups are impacted, and the success of these movements in stopping and modifying projects. The study finds that conflicts over energy projects disproportionately impact rural and indigenous communities and that violence and repression against protesters was rife, with assassination of activists occurring in 65 cases, or 1 out of 10 cases studied. However, the study also points to the effectiveness of social protest in stopping and modifying energy projects, finding that over a quarter of projects facing social resistance turn out to be either canceled, suspended, or delayed. Furthermore, it highlights how communities engage in collective action as a means of shaping energy futures and make claims for localization, democratic participation, shorter energy chains, anti-racism, climate-justice-focused governance, and Indigenous leadership. According to Dr. Temper, "the study shows that the switch from fossil fuels to green energy is not inherently socially and environmentally benign and demonstrates how communities are standing up to demand a say in energy systems that works for them. These results call for action to ensure that the costs of decarbonization of our energy system do not fall on the most vulnerable members of our society." The study urges climate and energy policymakers to pay closer attention to the demands of collective movements to meaningfully address climate change and to move towards a truly just transition. The study finds that amongst low-carbon energy projects, hydropower is the most socially and environmentally damag-ing, leading to mass displacement and high rates of violence. Out of the 160 cases of hydropower plants from 43 coun-tries studied, almost 85% of the cases are either high or medium intensity. Indigenous peoples are particularly at risk and are involved in 6 out of 10 cases. Co-author Dr. Daniela Del Bene, from ICTA-UAB, urges caution around large-scale renewables. "The case of hydropower dams shows that even less carbon-emitting technologies can cause severe im-pacts and lead to intense conflicts, including violence and assassinations of opponents. The energy transition is not only a matter of what technology or energy source to use but also of who controls and decides upon our energy systems", she says. On the other hand, wind, solar, and geothermal renewable energy projects, were the least conflictive and involved lower levels of repression than other projects. According to co-author Sofia Avila, "conflicts around mega wind and solar power infrastructures are not about "blocking" climate solutions but rather about "opening" political spaces to build equitable approaches towards a low-carbon future. For example, in Mexico, long-lasting claims of injustice around an ambitious Wind Power Corridor in Oaxaca has spearheaded citizen debates around a just transition, while different proposals for cooperative and decentralized energy production schemes are emerging in the country." According to Prof. Nicolas Kosoy, from McGill University, "participation and inclusiveness are key to resolving our socio-environmental crises. Both green and brown energy projects can lead to ecological devastation and social exclusion if local communities and ecosystems rights continue to be trampled upon." The study argues that place-based mobilizations can point the way towards responding to the climate crisis while tackling underlying societal problems such as racism, gender inequality, and colonialism. According to Dr. Temper, addressing the climate crisis calls for more than a blind switch to renewables. Demand-side reduction is necessary but this needs to work in tandem with supply side approaches such as moratoria, and leaving fossil fuels in the ground are necessary. "Equity concerns need to be foremost in deciding on unminable and unburnable sites. Instead of creating new fossil fuel and green sacrifices zones, there is a need to engage these communities in redesigning just energy futures", she says.   sumber: https://phys.org/news/2020-12-scientists-social-environmental-tied-energy.html

Okay, Thanks Intertonic

About the size of a small pickup truck, Sentinel-6 Michael Freilich will extend a nearly 30-year continuous dataset on sea level collected by an ongoing collaboration of U.S. and European satellites while enhancing weather forecasts and providing detailed information on large-scale ocean currents to support ship navigation near coastlines. The ocean-observing Sentinel-6 Michael Freilich satellite launched from Vandenberg Air Force Base in California aboard a SpaceX Falcon 9 rocket on Nov. 21, 2020 at 12:17 p.m. EST (9:17 a.m. PST, 5:17 p.m. UTC). Credit: NASA-JPL/Caltech "The Earth is changing, and this satellite will help deepen our understanding of how," said Karen St. Germain, director of NASA's Earth Science Division. "The changing Earth processes are affecting sea level globally, but the impact on local communities varies widely. International collaboration is critical to both understanding these changes and informing coastal communities around the world." After arriving in orbit, the spacecraft separated from the rocket's second stage and unfolded its twin sets of solar arrays. Ground controllers successfully acquired the satellite's signal, and initial telemetry reports showed the spacecraft in good health. Sentinel-6 Michael Freilich will now undergo a series of exhaustive checks and calibrations before it starts collecting science data in a few months' time. Continuing the Legacy The spacecraft is named in honor of Michael Freilich, the former director of NASA's Earth Science Division, who was a leading figure in advancing ocean observations from space. Freilich passed away Aug. 5, 2020. His close family and friends attended the launch of the satellite that now carries his name. "Michael was a tireless force in Earth sciences. Climate change and sea level rise know no national borders, and he championed international collaboration to confront the challenge," said ESA (European Space Agency) Director of Earth Observation Programmes Josef Aschbacher. "It's fitting that a satellite in his name will continue the 'gold standard' of sea level measurements for the next half-decade. This European-U.S. cooperation is exemplary and will pave the way for more cooperation opportunities in Earth observation." "Mike helped ensure NASA was a steadfast partner with scientists and space agencies worldwide, and his love of oceanography and Earth science helped us improve understanding of our beautiful planet," added Thomas Zurbuchen, NASA associate administrator for science at the agency's headquarters. "This satellite so graciously named for him by our European partners will carry out the critical work Mike so believed in -- adding to a legacy of crucial data about our oceans and paying it forward for the benefit of future generations." Sentinel-6 Michael Freilich will continue the sea level record that began in 1992 with the TOPEX/Poseidon satellite and continued with Jason-1 (2001), OSTM/Jason-2 (2008), and eventually Jason-3, which has been observing the oceans since 2016. Together, these satellites have provided a nearly 30-year record ofprecise measurements of sea level height while tracking the rate at which our oceans are rising in response to our warming climate. Sentinel-6 Michael Freilich will pass the baton to its twin, Sentinel-6B, in 2025, extending the current climate record at least another 10 years between the two satellites. Global Science Impact This latest mission marks the first international involvement in Copernicus, the European Union's Earth Observation Programme. Along with measuring sea levels for almost the entire globe, Sentinel-6 Michael Freilich's suite of scientific instruments will also make atmospheric measurements that can be used to complement climate models and help meteorologists make better weather forecasts. "NASA is but one of several partners involved in Sentinel-6 Michael Freilich, but this satellite speaks to the very core of our mission," said NASA Administrator Jim Bridenstine. "Whether 800 miles above Earth with this remarkable spacecraft or traveling to Mars to look for signs of life, whether providing farmers with agricultural data or aiding first responders with our Disasters program, we are tirelessly committed not just to learning and exploring, but to having an impact where it's needed." The initial orbit of Sentinel-6 Michael Freilich is about 12.5 miles (20.1 kilometers) lower than its ultimate operational orbit of 830 miles (1,336 kilometers). In less than a month, the satellite will receive commands to raise its orbit, trailing Jason-3 by about 30 seconds. Mission scientists and engineers will then spend about a year cross-calibrating data collected by the two satellites to ensure the continuity of sea level measurements from one satellite to the next. Sentinel-6 Michael Freilich will then take over as the primary sea level satellite and Jason-3 will provide a supporting role until the end of its mission. "This mission is the very essence of partnership, precision, and incredible long-term focus," said Michael Watkins, director of NASA's Jet Propulsion Laboratory in Southern California, which manages the mission. "Sentinel-6 Michael Freilich not only provides a critical measurement,it is essential for continuing this historic multi-decadal sea level record." Sentinel-6 Michael Freilich and Sentinel-6B compose the Sentinel-6/Jason-CS (Continuity of Service) mission developed in partnership with ESA. ESA is developing the new Sentinel family of missions to support the operational needs of the Copernicus program, managed by the European Commission. Other partners include the European Organisation for the Exploitation of Meteorological Satellites (EUMETSAT), and National Oceanic and Atmospheric Administration, with funding support from the European Commission and technical support from France's National Centre for Space Studies. "The data from this satellite, which is so critical for climate monitoring and weather forecasting, will be of unprecedented accuracy," said EUMETSAT Director-General Alain Ratier. "These data, which can only be obtained by measurements from space, will bring a wide range of benefits to people around the globe, from safer ocean travel to more precise prediction of hurricane paths, from greater understanding of sea level rise to more accurate seasonal weather forecasts, and so much more." JPL, a division of Caltech in Pasadena, California, is contributing three science instruments to each Sentinel-6 satellite: the Advanced Microwave Radiometer for Climate, the Global Navigation Satellite System -- Radio Occultation, and the Laser Retroreflector Array. NASA is also contributing launch services, ground systems supporting operation of the NASA science instruments, the science data processors for two of these instruments, and support for the U.S. component of the international Ocean Surface Topography Science Team. The launch is managed by NASA's Launch Services Program, based at the agency's Kennedy Space Center in Florida. source: https://www.sciencedaily.com/releases/2020/11/201122094039.htm

Can't find a way to update my post from Jul 30. The link to follow has moved to here

there is also a new tool in arcgis pro called "Pixel Editor" if you need to correct the values for this tool you need the Image analyst license.  https://pro.arcgis.com/en/pro-app/help/analysis/image-analyst/editing-elevation-pixels.htm depending on your task or your licence you can also use the "Raster Calculator" (needs spatial analysis). For example if you have a polygon with the elevation data and you want to substitute the values on your raster (polygon to raster, then use the conditional function > con() https://desktop.arcgis.com/en/arcmap/10.3/tools/spatial-analyst-toolbox/con-.htm