Search Results for: historical global temperature records

Solar input to high latitudes and the global ice volume

by Donald Rapp, Ralf Ellis and Clive Best A review of the relationship between the solar input to high latitudes and the global ice volume over the past 2.7 million years.

Remarkable changes to carbon emission budgets in the IPCC Special Report on Global Warming of 1.5C

by Nic Lewis A close reading of Chapters 1 and 2 of the IPCC Special Report on Global Warming of 1.5°C (SR15) reveals some interesting changes from the IPCC 5th Assessment Report (AR5), and other science-relevant statements. This article highlights … Continue reading

The Rise and Fall of Central England Temperatures: Part II

by Tony Brown This article examines the continued cooling of CET this century Looks at a similar scenario of regional cooling in America Examines CET related urbanisation issues, and the current Met office allowances for this Notes the centuries long … Continue reading

JC interview: hurricanes and global warming

by Judith Curry My recent interview with David Whitehouse of the Global Warming Policy Foundation on Hurricanes Harvey and Irma and the link with global warming.

Uncertainties in sea surface temperatures

by Judith Curry Two new papers have focused on the quality, uncertainties and  interpretation of global sea surface temperature data.

Prospects for a Prolonged Slowdown in Global Warming in the Early 21st Century

by Nic Lewis [W]e estimate that the warming slowdown (< 0.1 K/decade trend beginning in 1998) could persist, due to internal variability cooling, through 2020, 2025 or 2030 with probabilities 16%, 11%, and 6%, respectively. – Knutson et al.

Assessing U.S. temperature adjustments using the Climate Reference Network

by Zeke Hausfather Measuring temperatures in the U.S. no easy task. While we have mostly volunteer-run weather station data from across the country going back to the late 1800s, these weather stations were never set up to consistently monitor long-term … Continue reading

Busting (or not) the mid-20th century global-warming hiatus

by Bob Tisdale A closer look at the uncertainties in the mid 20th century ocean surface temperatures.

Watts et al.: Temperature station siting matters

by Judith Curry 30 year trends of temperature are shown to be lower, using well-sited high quality NOAA weather stations that do not require adjustments to the data.

JC op ed: the politics surrounding global temperature data

by Judith Curry My op-ed in Fox News:  Is government tinkering with global warming data?

Temperature adjustments in Australia

by Euan Mearns UK blogger Paul Homewood and Telegraph columnist Christopher Booker have managed to stir public interest in the veracity of adjustments made to temperature records by the Global Historical Climatology Network (GHCN).

Berkeley Earth: raw versus adjusted temperature data

by Robert Rohde, Zeke Hausfather, Steve Mosher Christopher Booker’s recent piece along with a few others have once again raised the issue of adjustments to various temperature series, including those made by Berkeley Earth. And now Booker has double-downed accusing … Continue reading

Understanding adjustments to temperature data

by Zeke Hausfather There has been much discussion of temperature adjustment of late in both climate blogs and in the media, but not much background on what specific adjustments are being made, why they are being made, and what effects they … Continue reading

El Ninos and La Ninas and Global Warming

by Donald Rapp Why after 400 years of La Niña precedence, did periods of El Niños dominance start in the 20th century? And why did the two periods of strong El Niño dominance in the 20th century occur during a … Continue reading

A new release from Berkeley Earth Surface Temperature

by Steven Mosher and Zeke Hausfather Today the Berkeley Earth Surface Temperature Project released a major update to their temperature data. The update includes: Global and regional land temperature estimates back to the 1750s, with estimated uncertainties. Temperature figures and … Continue reading

What global warming looks like (?)

by Judith Curry But since at least 1988, climate scientists have warned that climate change would bring, in general, increased heat waves, more droughts, more sudden downpours, more widespread wildfires and worsening storms. In the United States, those extremes are … Continue reading

Three new papers on interpreting temperature trends

by Judith Curry What do these three papers share in common?  All were written by scientists well outside the fields of atmospheric and climate science.

New version of the Berkeley Earth Surface Temperature data set

by Steve Mosher and Zeke Hausfather Today the Berkeley Earth Surface Temperature Project publically released their accumulated minimum, maximum, and mean monthly data.

Unknown and uncertain sea surface temperatures

by Tony Brown Over the years I have become intrigued at the manner in which historic surface temperature records- that were never intended to be more than a broad reflection of the micro climate around them- have been used as … Continue reading

(Forthcoming) New Surface Temperature Record

by Judith Curry The preparation of a new land surface temperature record was heralded last week in this news article entitled “Professor counters global warming myths with data.”  The article states: The Berkeley Earth Surface Temperature Study was conducted with … Continue reading

Hurricanes and global warming: 5 years post Katrina

The 2005 Atlantic hurricane season saw hurricane activity and devastation that was unprecedented in the historical record. In August 2005, Kerry Emanuel published a paper in Nature associating the increase in sea surface temperature (SST) since 1950 with an increase in maximum hurricane potential intensity and the destructive capacity of hurricanes, focusing on hurricanes in the North Atlantic and North Pacific. Webster et al. in an article published in Science (published between the landfalls of Hurricanes Katrina and Rita) showed that while the total number of hurricanes has not increased globally since 1970, the proportion of category 4 and 5 hurricanes had doubled, implying that the distribution of hurricane intensity has shifted towards more intense hurricanes. The timing of the publication of these papers relative to Hurricane Katrina’s devastation focused intense media attention on the topic of greenhouse warming and increasing hurricane intensity, although neither Emanuel or Webster et al. directly attributed the tropical cyclone changes to greenhouse warming.

Five years after Hurricane Katrina, hundreds of papers have been published that relate in some way to the subject of hurricanes and climate variability/change. We also have 5 years of additional data. Major assessments have been undertaken be three different international and national groups. What have we learned? What don’t we know? How should we assess the risk from future hurricanes? Continue reading

Australian fires: Climate ‘truth bomb’?

by Alan Longhurst Recipe for Australia’s climate ‘truth bomb’:  dubious manipulations of the historical temperature record, ignorance of the climate dynamics of the Southern Hemisphere, and ignorance of Australia’s ecological and social history.

Plausible scenarios for climate change: 2020-2050

by Judith Curry A range of scenarios for global mean surface temperature change between 2020 and 2050, derived using a semi-empirical approach. All three modes of natural climate variability – volcanoes, solar and internal variability – are expected to act … Continue reading

Week in review – science edition

by Judith Curry A few things that caught my eye this past week

Week in review – science edition

by Judith Curry A few things that caught my eye this past week