Search Results for: adjustments

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

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).

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

On the adjustments to the HadSST3 data set

by Greg Goodman **UPDATE at end of thread** The effect of the adjustments introduced in Met. Office’s HadSST3 release are compared to the original ICOADS data to evaluate their effects on the frequency content of the data. The relative merits … Continue reading

Week in review – science edition

by Judith Curry A few things that have caught my eye this past 12(!) weeks.

COVID-19: Updated data implies that UK modelling hugely overestimates the expected death rates from infection

By Nic Lewis Introduction There has been much media coverage about the danger to life posed by the COVID-19 coronavirus pandemic. While it is clearly a serious threat, one should consider whether the best evidence supports the current degree of … 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.

Critique of the new Santer et al. (2019) paper

by Ross McKitrick Ben Santer et al. have a new paper out in Nature Climate Change arguing that with 40 years of satellite data available they can detect the anthropogenic influence in the mid-troposphere at a 5-sigma level of confidence. … Continue reading

Early 20th century global warming

by Judith Curry A careful look at the early 20th century global warming, which is almost as large as the warming since 1950.  Until we can explain the early 20th century warming, I have little confidence IPCC and NCA4 attribution … Continue reading

Ocean Heat Content Surprises

by Judith Curry There have several interesting papers on ocean heat content published in recent weeks, with some very important implications.

Climate sensitivity to cumulative carbon emissions

By Nic Lewis An observational estimate of transient (multidecadal) warming relative to cumulative CO2 emissions is little over half that per IPCC AR5 projections. AR5 claims that CO2-caused warming would be undiminished for 1000 years after emissions cease, but observations … 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.

Warming patterns are unlikely to explain low historical estimates of climate sensitivity

By Nic Lewis A critique of of a new paper by Andrews  et al., Accounting for changing temperature patterns increases historical estimates of climate sensitivity.

Climate uncertainty & risk

by Judith Curry I’ve been invited to write an article on climate uncertainty and risk.

Sea level rise: isostatic adjustment

by Judith Curry A discussion thread to ponder the uncertainties in glacial isostatic adjustment and the implications for past and future sea level rise.

Four questions on climate change

by Garth Paltridge An essay on the state of climate change science.

Sea level rise acceleration (or not): Part VI. Projections for the 21st century

by Judith Curry The concern about sea level rise is driven primarily by projections of future sea level rise.

Will advances in groundwater science force a paradigm shift in sea level rise attribution?

by Jim Steele  A better accounting of natural groundwater discharge is needed to constrain the range of contributions to sea level rise. The greater the contribution from groundwater discharge, the smaller the adjustments used to amplify contributions from meltwater and … 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

Sea level rise acceleration (or not): Part IV – Satellite era record

by Judith Curry Part IV of the Climate Etc. series on sea level rise focuses on the satellite era (since 1993), including the recent causes of sea level variations and arguments regarding the acceleration (or not) of recent sea level … Continue reading

Week in review

by Judith Curry A few things that have caught my eye these past weeks.

Does a new paper really reconcile instrumental and model-based climate sensitivity estimates?

by Nic Lewis A new paper in Science Advances by Cristian Proistosescu and Peter Huybers (hereafter PH17) claims that accounting for the decline in feedback strength over time that occurs in most CMIP5 coupled global climate models (GCMs), brings observationally-based … Continue reading

Electricity in Texas: is 100% renewables feasible? Part I

by Peter Davies Scenarios to understand how load, wind, solar PV and storage interact and whether a 100% renewable grid for Texas is technically feasible.

How inconstant are climate feedbacks – and does it matter?

by Nic Lewis Kyle Armour has a new paper out in Nature Climate Change: “Energy budget constraints on climate sensitivity in light of inconstant climate feedbacks”.