Tag Archives: Greenland

Greenland “death sentence” article ignores climate science

“Yet the graph in article shows ice loss decelerating, not accelerating, and they say Greenland gained ice last year. There are many things wrong with this graph, but the point is that it shows other claims in the article to be wrong.”click here

Glacial calving is a natural phenomena; Greenland glaciers are growing

Geothermal heat flux a significant contributor to Greenland Ice melting

Irina M. Artemieva. Lithosphere thermal thickness and geothermal heat flux in Greenland from a new thermal isostasy method. Earth-Science Reviews, Volume 188, January 2019, Pages 469-481. https://doi.org/10.1016/j.earscirev.2018.10.015

Lithosphere thermal structure in Greenland is poorly known and models based on seismic and magnetic data are inconsistent, while growing awareness in the fate of the ice sheet in Greenland requires reliable constraints on geothermal heat flux (GHF) from the Earth’s interior in the region where conventional heat flux measurements are nearly absent. The lithosphere structure of Greenland remains controversial, while its geological evolution is constrained by direct observations in the narrow ice-free zone along the coasts. The effect of the Iceland hotspot on the lithosphere structure is also debated.

Here I describe a new thermal isostasy method which I use to calculate upper mantle temperature anomalies, lithosphere thickness, and GHF in Greenland from seismic data on the Moho depth, topography and ice thickness. To verify the model results, the predicted GHF values are compared to available measurements and show a good agreement. Thick (200–270 km) cratonic lithosphere of SW Greenland with GHF of ca. 40 mW/m2 thins to 180–190 km towards central Greenland without a clear boundary between the Archean and Proterozoic blocks, and the deepest lithosphere keel is observed beneath the largest kimberlite province in West Greenland. The NW-SE belt with an anomalously thin (100–120 km) lithosphere and GHF of 60–70 mW/m2 crosses north-central Greenland from coast to coast and it may mark the Iceland hotspot track. In East Greenland this anomalous belt merges with a strong GHF anomaly of >100 mW/m2 in the Fjordland region. The anomaly is associated with a strong lithosphere thinning, possibly to the Moho, that requires advective heat transfer such as above active magma chambers, which would accelerate ice basal melting. The anomaly may extend 500 km inland with possibly a significant contribution of ice melt to the ice-drainage system of Greenland.

Additional papers here.

Growing glacier disproves Washington Post article “climate change” claim

Greenland glacier not following climate modeler’s predictions

“Greenland’s most famous glacier has grown nearly 10km over the past seven years. click here

Greenland glaciers either stable or growing

“In 2018, 26 of Greenland’s 47 largest glaciers were either stable or grew in size. Overall, the 47 glaciers advanced by +4.1  km² during 2018.  Of the 6 largest glaciers, 4 grew while 2 retreated. Since 2012, ice loss has been “minor” to “modest” due to the dramatic melting slowdown. Summer average temperatures for 2018 were lower than the 2008-2018 average by more than one standard deviation. Since 2000, the extent of the non-snow-covered areas of Greenland has increased by 500 km² per year.” click here

Washington Post claims Greenland is baking

“Temperatures in Greenland so far this year have been coldest since 1995, and 18th coldest since 1885.” click here