Climate

How hot was March 2020?

From the NOAA Global Climate Report – March 2020: Averaged as a whole, the global land and ocean surface temperature for March 2020 was 1.16°C (2.09°F) above the 20th century average of 12.7°C (54.9°F) and the second highest in the 141-year record. Only March 2016 was warmer at 1.31°C (2.36°F). …

Read More »

How do we know 12,000 years of climate?

The Climate.gov article Nature’s archives: piecing together 12,000 years of Earth’s climate story by Alison Stevens (4/15/2020) provides an overview of paleoclimate proxies and links to a new database of these records. Paleoclimate proxies indirectly record climate and atmospheric conditions present when they formed or grew; air bubbles in ice cores sample …

Read More »

What is a gigatonne of ice?

The picture here is a snapshot from an animation by NASA in the article Visualizing the Quantities of Climate Change – Ice Sheet Loss in Greenland and Antarctica by Matt Conlen (3/9/2020) that shows a gigatonne of ice. A gigatonne isn’t much since Satellite data show that Greenland and Antarctica …

Read More »

A heatwave where?

From the article The 2019/2020 summer of Antarctic heatwave by Sharon A. Robinson et. e. (3/30/2020) in Global Change Biology: Heatwaves are rarely reported in Antarctica, but elsewhere are often classified as three consecutive days with both extreme maximum and minimum temperatures. Using this classification, Casey experienced a heatwave between …

Read More »

How hot was February 2020?

From NOAA’s Global Climate Report  – February 2020: Averaged as a whole, February 2020 was near-record warm with a global land and ocean surface temperature departure from average of 1.17°C (2.11°F) above the 20th century average. Only February 2016 was warmer. The February 2020 temperature departure from average was also the third …

Read More »

How is spring changing?

Climate Central has put together their 2020 Spring Package (2/2/2020) with information and a selection of city graphs. For example Analyzing average spring temperatures since 1970, the top increases occurred in the Southwest—where spring is the fastest warming season. Reno, Nev. topped the list with an increase of 7.2°F, followed …

Read More »

How much has spring snow cover changed?

The Climate.gov article Climate Change: Spring Snow Cover by LuAnn Dahlman and Rebecca Lindsey (2/14/2020) provides the answer as seen in their graph here. This change is another example of a feedback loop. About one-third of Earth’s land surface is covered by snow for some part of the year. The …

Read More »

How accurate are climate models?

The NASA Vital Signs of the Planet post Study Confirms Climate Models are Getting Future Warming Projection Right by Alan Buis (1/9/2020) reports In a study accepted for publication in the journal Geophysical Research Letters, a research team led by Zeke Hausfather of the University of California, Berkeley, conducted a …

Read More »

How hot was 2019?

From the NOAA Global Climate Report – Annual 2019: The year 2019 was the second warmest year in the 140-year record, with a global land and ocean surface temperature departure from average of +0.95°C (+1.71°F). This value is only 0.04°C (0.07°F) less than the record high value of +0.99°C (+1.78°F) …

Read More »