vegetation is migrating northwest

If we look at the Earth from space, in addition to distinguishing the shapes of the continents, great milestones of nature and some other human construction such as the greenhouses of Almeríawe can also observe how time and the seasons pass: the terrestrial vegetation follows a seasonal pattern, a kind of green wave that runs across the surface of the planet from north to south. Thus, in the boreal summer, the maximum of greenery moves towards the north. In the southern summer, towards the south. From space we can also observe climate change and its effects. Without going any further, the peninsula it cracked after from the torrent of rain at the beginning of the year and that green belt is also moving. Specifically, 14 kilometers a year, according to has determined a research team from the University of Leipzig, the German Center for Integrative Biodiversity Research and the University of Valencia. The discovery. The green wave is moving northwest and it does it faster and faster. The southern hemisphere takes the cake: between 2010 and 2020, displacement accelerated to 14 kilometers per year. Furthermore, it does so in a way that the scientific community did not expect: the center of global vegetation is moving north in both hemispheres. That it would do so in the northern hemisphere was expected, but that it would do so in the south was not (based on the patterns, one would expect it to move south). But it is also moving towards the east, breaking all schemes. Why is it important. It is the first global metric of biological cycles expressed in kilometers, a magnitude as clear and intuitive as sea level or temperature and that works as if it were a compass. What this indicator says is that the north and south amplitude of the green wave is reducing: if you put a point on the map representing where the center of gravity of all the vegetation on the planet is, it would be moving towards the northwest. The planet “greens” in an increasingly asymmetrical way. They explain that in a high emissions scenario, the eastern shift will end up dominating over the north at the end of the century. This involves a profound reconfiguration of where and when the Earth’s biosphere functions, which will affect carbon cycles, migrations and ecosystems. Context. Global warming takes spleen the arm the global greeninga widespread increase in vegetation documented since the 1980s and concentrated especially in the northern hemisphere. The reason is global warming (as winters are shorter, plants have more time to grow), carbon dioxide that acts as fertilizer and that countries like China and India have intensified their agriculture. In fact, they are the drivers of change. Why east? It is a direct consequence of the above: in short, because East Asia, India, Europe are “pulling” the center of gravity of global greenery towards the east. And South America does just the opposite: the vegetation there is losing strength, due to causes such as deforestation, droughts or changes in land use. Not only has East Asia become greener in recent decades, we know it now drags the center of gravity of the entire Earth’s biosphere. How have they done it. To arrive at this metric and its effects, they have taken satellite data from 1982 to 2020 and have validated the results with six models of the Earth system of the CMIP6 projectwhich coordinates the simulations of the most advanced climate models. From here, the research team has calculated the center of mass of all terrestrial vegetation in 3D Cartesian coordinates (called a centroid), weighted by greenness indices. They have called the moment of maximum hemispheric greenness viridistice, like the solstice. The resulting trajectory summarizes the dynamics of biological cycles in a single curve. In Xataka | Spain today has 12 more days of “extreme risk” of fires per year: the cause is neither arsonists nor ranchers In Xataka | A plant from the Red Sea has appeared in the bay of Palma. It is a bad omen for the future of the Mediterranean Cover | Harsh Kumar

In 1845, John Franklin’s expedition set sail in search of the Northwest Passage. 180 years later his loss remains a mystery

On the morning of May 19, 1845, Captain John Franklin and his expedition weighed anchor from the Greenhithe Harboralmost at the mouth of the Thames. They were looking for the Northwest Passagethe (at that time theoretical) maritime route that would link the Atlantic and the Pacific through northern Canada. They never came home. 129 men who never returned and who, for 170 years, have been one of the great questions of scientific and naval exploration. We now know why the men of John Franklin’s lost exploration died. There are those who insinuate that the trip started badly from the beginning. It should never have been in the first place. John Franklin. The first option William Edward Parryone of the great English explorers, but he had already traveled to the Arctic five times and “was tired.” So he declined the offer. Secondly, they thought about James Clark Ross. Ross has just arrived from Antarctica where he had explored the Ross Sea and Island. In fact, the ships on that expedition were the same as those that would be used on this mission (two of Ross Island volcanoes They are called Erebus and Terror in honor of the ships). But upon returning to England, he became engaged to his future wife and decided that great explorations were no longer for him. He was followed by James Fitzjames (discarded due to inexperience), George Back (considered too controversial) and Francis Crozier (who, well, was Irish and that was more than enough reason to rule him out). Seeing the yard, John Barrow, second secretary of the Admiralty, called John Franklin. To this day no one knows why Franklin, who was already a legend at the time and was almost 60 years old, he said yes. But the fact is that, as I said, they left the vicinity of London that day in 1845. They stopped in Orkney and the convoy formed by the two main ships (HMS Erebus and HMS Terror), the HMS Rattler (the first English warship with steam propulsion) and a transport headed to Greenland. There they sacrificed ten oxen and the expedition began its solo journey. The search for the Northwest Passage The travels of Marco Polo are a peculiar book. Not only does it remain a very interesting precedent for current anthropology, but it served as an inspiration for many during the era of great exploration. The image you can see above is precisely the annotated copy of ‘The Voyages’ that Christopher Columbus had. In one of its versions, the Italian one from 1559, a Chinese province called Anian. We assume that it was from there that the geographers and explorers who discussed whether America was a new continent or, on the contrary, an Asian peninsula, got the name of the Strait of Anian, the separation between Asia and America that would give access to the Northwest Passage. It is what we know today as the Bering Strait and for years it was pure mythology. But, first, Ferdinand Magellan and his crew turned around Cape Espiritu Santo and found themselves face to face with the southeastern passage; and, second, a Dane in the service of Russia, Vitus Beringrediscovered for the West the strait through which Semyon Dezhniov had already traveled sixty years before. The rest was geopolitics: the quick passage to the Pacific without having to pass near the Spanish territories in America was too juicy. In 1745, an English law promised 20,000 pounds to whoever discovered the pass and the boom began. I have tried to convert the amount to a current currency and I have not been able to do it accurately, but I have drawn one conclusion: it was a lot of money. Favorable weather In early August 1845, two whalers, the Prince of Wales and the Enterprise, encountered Franklin’s ships in Baffin Bay. They were waiting for favorable weather to enter the Strait of Lancaster. That was the last time they were seen. Two years passed. And, little by little, Lady Jane Franklin, some members of Parliament, and the fledgling British press began to ask the Admiralty to send someone to search for the heroes of Franklin’s expedition. The Government sent three expeditions: one by land and two by sea, one through the Atlantic and another through the Pacific. They failed. Fearing that they would be forgotten, Lady Jane Franklin composed her lament, the song you can hear just above. And, although I don’t know if it was for that reason, the truth is that was not forgotten. In fact, the search for the lost expedition “became nothing less than a crusade.” In 1850 alone, eleven British and two American ships tried to locate them. It was then that the first tombs were found. Over the years, the different expeditions found fragments, Inuit stories and objects from the expedition. In 1855, following the indications of some Inuit tribes, pieces of wood were found with the name of Erebus. In 59 two messages were found. The first, dated May 28, 1847, was from Franklin himself and read “Sir John Franklin, Commander of the Expedition: All Well.” It is the document on the right. It was a common practice at the time, documents were left in different places so that, in case of problems, they could be reconstruct the details of the trip. But in this case, something curious happened: on the edges there was another message, dated April 25, 1848, explaining that the ships had been trapped in the ice. Franklin and twenty-three other crew members were dead. And the rest, the survivors, had abandoned the ships looking for an exit to the south. In the next few years some objects, some rumors and some tombs appeared. Nothing else. The ships never appeared and we never, in 150 years, discovered what had really happened to Captain John Franklin’s lost expedition. One hundred and fifty years without news In the 1980s, the University of Alberta launched a project to track the expedition. The different possible routes were traveled … Read more

We expected a storm this Friday in the northwest, what we did not expect is that it was so strong

The synopsis was clear: intense rainfall They were back To the Levante and the southeast of the Peninsula, but they were not going to last too much. However, Aemet It began to point out the possibility that, then, Another storm arrives For the Atlantic. What has changed in the last hours is that The “extreme traffic lights” just jump: Everything seems to indicate that what is going to arrive is a high impact storm that will bring extremely scrambled time. What will happen? At the atmospheric level, this storm will be developed this Friday and will begin to enter the west peninsular. On Saturday 8 we will see how a very active front will put all the predictions up. The key will be that, despite not being an atmospheric river, it is true that winds (Ábregos) will have a southern component and will be warmer even if they come loaded with moisture. That will boost storm. And at a practical level? Three things: bad sea, intense wind and many rainfall. We talk about wind gusts between 50 and 80 kilometers per hour. With hurricane winds in the country’s high areas. We will also see accumulated “abundant and persistent“With up to 150 liters per square meter throughout the western zone of the Peninsula. In addition, although as a consequence of the temperature rise the snow level will rise, the high areas can receive a good amount. But we have to talk about something else. Yes, it is true that everything indicates that a high impact storm will come (one that, presumably, will be called Jana), but that is not the big problem. The big problem is that it has been raining many days and the ability of the Earth to absorb water will not be very high. That means we will see floods and overflows in many zoans of the country. Something that, As Martín León points outit will become even more worrying when the following storms (which can arrive By the blocking anticyclone of northern Europe that is sending it to us) continue to take rain to already wet areas. And what was that “extreme traffic lights”? It is a way to call EFI (Extreme Forecast Index), the ECMWF model index that measures the rarity of a phenomenon. Well, EFI values ​​for March 8 They will be at maximum And that means that, whatever, this Saturday will be a very adverse day. Image | ECMWF In Xataka | Aemet already knows when the storm that is soaking Spain is over. The problem is that another act comes another

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