Links tagged “floods”

Pielke Jr.: "How anyone can get away with looking at 29 years of economic data to make claims of attribution is beyond me...At the same time the dramatic reduction in flood losses as a proportion of GDP is a major policy success of the past century...More precip, by itself, means neither more flooding nor more damage."

Media & NOAA hyped claims: Record 22 Billion-Dollar Weather Disasters Struck the U.S. in 2020, NOAA Says

But Bjorn Lomborg rebuts: "Tremendously misleading. The number of billion-dollar disasters will of course increase as society gets richer. When corrected for increased wealth, the world and the US are not seeing increasing damages (but insignificantly *decreasing* damages)." - "Despite breathless climate reporting, the relative cost of global weather catastrophes 1990-2020 not increasing (actually insignificantly decreasing)."

Prof. Roger Pielke Jr.: "NOAA is a great agency & contributes massively to saving life and property. It is thus so embarrassing that they dabble in bad economics for media catnip and clicks. Everything you hear about 'billion $ disasters' is wrong."

Meteorologist Anthony Watts: "New data shows the global climate-related death risk has dropped by over 99% since 1920. Despite the near constant caterwauling from climate alarmists that we are in a “climate emergency”, real-world data, release at the end of 2020 shows that climate related deaths are now approaching zero. The data spans 100 years of “global warming” back to 1920 and shows “climate related” deaths now approaching zero. Above is an update of the graph in the 2020 peer-reviewed article by Bjørn Lomborg: Welfare in the 21st century: Increasing development, reducing inequality, the impact of climate change, and the cost of climate policies."

Bjorn Lomborg reports: “Back in the 1920s, the death count from climate-related disasters was 485,000 on average every year. In the last full decade, 2010-2019, the average was 18,357 dead per year or 96% lower. In the first year of the new decade, 2020, the preliminary number of dead was even lower at 8,086 — 98% lower than the 1920s average.

But because the world’s population also quadrupled at the same time, the climate-related *death risk* has dropped even faster. The death risk is the probability of you dying in any one year. In the 1920s, it was 243 out of a million people that would die from climate-related disasters. In the 2010s, the risk was just 2.5 per million people — a drop of 99%. Now, in 2020, the preliminary number is 1 per million — 99.6% lower.”

Extreme weather expert Dr. Roger Pielke Jr. comments on new study: "It also has a nice one-paragraph summary of most recent IPCC conclusions on "natural hazards (not disasters)."

Bjorn Lomborg: Droughts: For drought, the IPCC concludes “there is low confidence in attributing changes in drought over global land areas since the mid-20th century to human influence” (IPCC 2013a, 871). Moreover, it concludes “there is low confidence in a global-scale observed trend in drought” with drought having “likely increased in the Mediterranean and West Africa and likely decreased in central North America and northwest Australia since 1950” (IPCC 2013a, 50). The IPCC repudiated previous findings from 2007, saying our “conclusions regarding global increasing trends in droughts since the 1970s are no longer supported” (IPCC 2013a, 44). This was because new data showed no increased global drought (Sheffield et al., 2012; van der Schrier et al. 2013), and one study even showed a persistent decline since 1982 (Hao et al., 2014), while the number of consecutive dry days has been declining for the last 90 years (Donat et al., 2013, 2112). 

Floods: The USGCRP summarizes the IPCC to say they “did not attribute changes in flooding to anthropogenic influence nor report detectable changes in flooding magnitude, duration, or frequency” (USGCRP 2017, 240).

Wildfires: While deforestation has reduced the amount of forests, it is likely that fires in forests have declined even in percentage of the remaining forest areas across the past century.

Hurricanes: The IPCC concludes that we cannot confidently attribute hurricanes to human influence: “There is low confidence in attribution of changes in tropical cyclone activity to human influence” (IPCC 2013a, 871). Indeed, globally, hurricanes are not getting more frequent: “current data sets indicate no significant observed trends in global tropical cyclone frequency over the past century” (

Sea level: Globally, over the past 30 years, rising sea levels have not resulted in more land underwater. Adding up all the coastal land lost and reclaimed, it turns out that the total coastal area has increased by more than 13,000 km² (Donchyts et al., 2016). This is perhaps most visibly the world's largest coast reclamation of the 80 km² of Palm Island and adjacent islands along the coast of Dubai, but across the world, many countries have shaped and extended their coastlines by land reclamation. Bangladesh, despite popular understanding, has net added about 480 km² of land in the face of sea level rise.

In short, the US climate is in most ways less extreme than it used to be. Temperatures are less extreme at both ends of the scale, storms less severe and droughts far less damaging. While it is now slightly warmer, this appears to have been largely beneficial.

Wildfires now burn only a fraction of the acreage they did prior to WW2

Sea-level rise is currently no higher than around the mid-20th century

Tornadoes are now less common than they used to be, particularly the stronger ones.

Floods are not getting worse

Hurricanes are not becoming either more frequent or powerful.

Summers were hotter in the 1930s than in any recent years.

Little or no rise in temperatures since the mid-1990s.