Tag: EarthSky.org

Picture Parade Two Hundred and Ninety-Five

That Chilean eclipse!

From EarthSky:

More amazing images of the July 2 eclipse

Some called it the “astronomer’s eclipse” because it passed near major observatories in Chile. Check out these beautiful images of the July 2, 2019, total solar eclipse.

This composite image captures the drama of totality during the July 2, 2019, total solar eclipse. When – as seen from Earth – the moon passes directly in front of the sun, the sun’s light is blocked and its extended atmosphere or corona can be seen. The processing of this image highlights the intricate detail of the corona, its structures shaped by the sun’s magnetic field. Some details of the lunar surface can also be seen. The image – via European Space Agency (ESA) – was created by the ESA-CESAR team observing the eclipse from ESO’s La Silla Observatory in Chile, South America.
A prominence seen in the sun’s chromosphere during the July 2, 2019, total solar eclipse. Prominences are made of tangled magnetic field lines that keep dense concentrations of solar plasma suspended above the sun’s surface. They are anchored to the sun’s visible surface and extend outwards through the chromosphere and out into the corona. The red hue of the chromosphere is only apparent during an eclipse. This image – via ESA – was taken by the ESA-CESAR team observing the eclipse from ESO’s La Silla Observatory in Chile, South America.
View at EarthSky Community Photos. | Total solar eclipse over Vicuna, Chile, on July 2, 2019 from Alexander Krivenyshev of the website WorldTimeZone.com.
View at EarthSky Community Photos. | Pablo Goffard caught the July 2 total solar eclipse from Incahuasi, Chile. He wrote: “This is just a photo, a tiny part of the experience. Incahuasi is a small town in the Atacama desert. Here it’s seen the camp installed especially for the eclipse.”
This image of eclipse-watchers was taken by a frequent EarthSky contributor, Yuri Beletsky, on the Chilean coast. It was chosen as an Astronomy Picture of the Day for July 4, 2019. Congratulations on a wonderful photo, Yuri! Note that diffraction spikes (apparent rays from the sun) are effects from the camera lens aperture.

While some observers on the southern part of Earth saw a total solar eclipse, the European Space Agency’s PROBA-2satellite’s SWAP imager in space saw a partial eclipse, as shown in the video below. The images are in ultraviolet light, revealing the turbulent nature of the sun’s surface and corona. ESA said:

During this eclipse the satellite was passing through the South Atlantic Anomaly at the time of the largest occultation [covering of the sun]. In this region the spacecraft is exposed to higher levels of radiation. The increased flux of energetic particles falling on the satellite’s detector is the cause for all the bright dots and streaks in the images.

Bottom line: More amazing images of the July 2, 2019, total solar eclipse.

There is more, much more, on the Smithsonian magazine website. Do go across and see the images.

The winds of time

Time from two very different perspectives.

solstice

I’m writing this post approaching midnight (UTC) on the afternoon of Tuesday, 26th May, 2015.  In other words, approaching 00:00 UTC 27/05/15. (Or, in American speak 05/27/15.)

In fewer than four weeks it will be the moment of the Summer solstice, as in the Northern Hemisphere’s Mid-Summer’s Day. More precisely explained over on EarthSky.org together with a number of very interesting facts:

The solstice comes on June 21, 2015 at 16:38 UTC. For North American time zones, that places the solstice at 12:38 p.m. EDT, 11:38 a.m. CDT, 10:38 a.m. MDT and 9:38 a.m. PDT.

The planet Earth has been in orbit around the sun for a very long time!  Time beyond imagination. By comparison, in a very short time one species alone, namely homo sapiens, has altered the biosphere of Planet Earth. It’s almost beyond comprehension!

To expand on that notion, let me republish an essay from TomDispatch from last September.  Republished with the kind permission of Tom Engelhardt.

ooOOoo

Tomgram: Rebecca Solnit, What to Do When You’re Running Out of Time

Posted by Rebecca Solnit at 8:09am, September 18, 2014.
Follow TomDispatch on Twitter @TomDispatch.

Just when no one needed more lousy news, the U.N.’s weather outfit, the World Meteorological Organization (WMO), issued its annual Greenhouse Gas Bulletin. It offered a shocking climate-change update: the concentrations of long-lasting greenhouse gases in the Earth’s atmosphere (carbon dioxide, methane, and nitrous oxide) rose at a “record-shattering pace” from 2012 to 2013, including the largest increase in CO2 in 30 years — and there was a nasty twist to this news that made it even grimmer.

While such increases reflected the fact that we continue to extract and burn fossil fuels at staggering rates, something else seems to be happening as well. Both the oceans and terrestrial plant life act as carbon sinks; that is, they absorb significant amounts of the carbon dioxide we release and store it away. Unfortunately, both may be reaching limits of some sort and seem to be absorbing less. This is genuinely bad news if you’re thinking about the future warming of the planet. (As it happens, in the same period, according to the Yale Project on Climate Change Communication, parts of the American public stopped absorbing information in no less striking fashion: the number of those who believe that global warming isn’t happening rose 7% to 23%.)

So consider this a propitious moment for a major climate-change demonstration, possibly the largest in history, in New York City this Sunday. [Ed: it turned out to be the largest climate march in history.] As the WMO’s Secretary-General Michel Jarraud pointed out, there is still time to make a difference. “We have the knowledge and we have the tools,” he said, “for action to try to keep temperature increases within 2°C to give our planet a chance and to give our children and grandchildren a future. Pleading ignorance can no longer be an excuse for not acting.” As TomDispatch regular Rebecca Solnit, author of the indie bestseller Men Explain Things to Me, points out, the pressure of mass movements can sometimes turn history upside down. Of course, the only way to find out if climate change is a candidate for this treatment is to get out in the streets. So, for those of you anywhere near New York, see you this Sunday! Tom

The Wheel Turns, the Boat Rocks, the Sea Rises

Change in a Time of Climate Change 
By Rebecca Solnit

There have undoubtedly been stable periods in human history, but you and your parents, grandparents, and great-grandparents never lived through one, and neither will any children or grandchildren you may have or come to have. Everything has been changing continuously, profoundly — from the role of women to the nature of agriculture. For the past couple of hundred years, change has been accelerating in both magnificent and nightmarish ways.

Yet when we argue for change, notably changing our ways in response to climate change, we’re arguing against people who claim we’re disrupting a stable system. They insist that we’re rocking the boat unnecessarily.

I say: rock that boat. It’s a lifeboat; maybe the people in it will wake up and start rowing. Those who think they’re hanging onto a stable order are actually clinging to the wreckage of the old order, a ship already sinking, that we need to leave behind.

As you probably know, the actual oceans are rising — almost eight inches since 1880, and that’s only going to accelerate. They’re also acidifying, because they’re absorbing significant amounts of the carbon we continue to pump into the atmosphere at record levels. The ice that covers the polar seas is shrinking, while the ice shields that cover Antarctica and Greenland are melting. The water locked up in all the polar ice, as it’s unlocked by heat, is going to raise sea levels staggeringly, possibly by as much as 200 feet at some point in the future, how distant we do not know. In the temperate latitudes, warming seas breed fiercer hurricanes.

The oceans are changing fast, and for the worse. Fish stocks are dying off, as are shellfish. In many acidified oceanic regions, their shells are actually dissolving or failing to form, which is one of the scariest, most nightmarish things I’ve ever heard. So don’t tell me that we’re rocking a stable boat on calm seas. The glorious 10,000-year period of stable climate in which humanity flourished and then exploded to overrun the Earth and all its ecosystems is over.

But responding to these current cataclysmic changes means taking on people who believe, or at least assert, that those of us who want to react and act are gratuitously disrupting a stable system that’s working fine. It isn’t stable. It is working fine — in the short term and the most limited sense — for oil companies and the people who profit from them and for some of us in the particularly cushy parts of the world who haven’t been impacted yet by weather events like, say, the recent torrential floods in Japan or southern Nevada and Arizona, or the monsoon versions of the same that have devastated parts of India and Pakistan, or the drought that has mummified my beloved California, or the wildfires of Australia.

The problem, of course, is that the people who most benefit from the current arrangements have effectively purchased a lot of politicians, and that a great many of the rest of them are either hopelessly dim or amazingly timid. Most of the Democrats recognize the reality of climate change but not the urgency of doing something about it. Many of the Republicans used to — John McCain has done an amazing about-face from being a sane voice on climate to a shrill denier — and they present a horrific obstacle to any international treaties.

Put it this way: in one country, one party holding 45 out of 100 seats in one legislative house, while serving a minority of the very rich, can basically block what quite a lot of the other seven billion people on Earth want and need, because a two-thirds majority in the Senate must consent to any international treaty the U.S. signs. Which is not to say much for the president, whose drill-baby-drill administration only looks good compared to the petroleum servants he faces, when he bothers to face them and isn’t just one of them. History will despise them all and much of the world does now, but as my mother would have said, they know which side their bread is buttered on.

As it happens, the butter is melting and the bread is getting more expensive. Global grain production is already down several percent thanks to climate change, says a terrifying new United Nations report. Declining crops cause food shortages and rising food prices, creating hunger and even famine for the poorest on Earth, and also sometimes cause massive unrest. Rising bread prices were one factor that helped spark the Arab Spring in 2011. Anyone who argues that doing something about global warming will be too expensive is dodging just how expensive unmitigated climate change is already proving to be.

It’s only a question of whether the very wealthy or the very poor will pay. Putting it that way, however, devalues all the nonmonetary things at stake, from the survival of myriad species to our confidence in the future. And yeah, climate change is here, now. We’ve already lost a lot and we’re going to lose more, but there’s a difference between terrible and apocalyptic. We still have some control over how extreme it gets. That’s not a great choice, but it’s the choice we have. There’s still a window open for action, but it’s closing. As the Secretary-General of the World Meteorological Society, Michel Jarraud, bluntly put it recently, “We are running out of time.”

New and Renewable Energies

The future is not yet written. Look at the world we’re in at this very moment. The Keystone XL tar sands pipeline was supposed to be built years ago, but activists catalyzed by the rural and indigenous communities across whose land it would go have stopped it so far, and made what was supposed to be a done deal a contentious issue. Activists changed the outcome.

Fracking has been challenged on the state level, and banned in townships and counties from upstate New York to central California. (It has also been banned in two Canadian provinces, France, and Bulgaria.) The fossil-fuel divestment movement has achieved a number of remarkable victories in its few bare years of existence and more are on the way. The actual divestments and commitments to divest fossil fuel stocks by various institutions ranging from the city of Seattle to the British Medical Association are striking. But the real power of the movement lies in the way it has called into question the wisdom of investing in fossil fuel corporations. Even mainstream voices like the British Parliament’s Environmental Audit Committee and publications like Forbes are now beginning to question whether they are safe places to put money. That’s a sea change.

Renewable energy has become more efficient, technologically sophisticated, and cheaper — the price of solar power in relation to the energy it generates has plummeted astonishingly over the past three decades and wind technology keeps getting better. While Americans overall are not yet curtailing their fossil-fuel habits, many individuals and communities are choosing other options, and those options are becoming increasingly viable. A Stanford University scientist has proposed a plan to allow each of the 50 states to run on 100% renewable energy by 2050.

Since, according to the latest report of the U.N.’s Intergovernmental Panel on Climate Change, fossil fuel reserves still in the ground are “at least four times larger than could safely be burned if global warming is to be kept to a tolerable level,” it couldn’t be more important to reach global agreements to do things differently on a planetary scale. Notably, most of those carbon reserves must be left untapped and the modest steps already taken locally and ad hoc show that such changes are indeed possible and that an encouraging number of us want to pursue them.

ooOOoo

In case you are wondering why this TomDispatch essay has been published in this place some ten months after it first appeared over at TD, it is simply because I made a note to leave it for a few months to see if the benefit of some hindsight put the essay into context.

Here’s the context.

In the month of September, 2014, when this essay was published over on TomDispatch, the Atmospheric CO2 monthly average was 395.26 ppm. In April, 2015 it was 403.26 ppm. I can’t spell it out any better than what is written on the home page of CO2Now.org:

What the world needs to watch

Global warming is mainly the result of CO2 levels rising in the Earth’s atmosphere. Both atmospheric CO2 and climate change are accelerating. Climate scientists say we have years, not decades, to stabilize CO2 and other greenhouse gases.

To help the world succeed, CO2Now.org makes it easy to see the most current CO2 level and what it means. So, use this site and keep an eye on CO2. Invite others to do the same. Then we can do more to send CO2 in the right direction.