Linden Ashcroft
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View article: A climatology of meteorological droughts in New England, Australia, 1880–2022
A climatology of meteorological droughts in New England, Australia, 1880–2022 Open
From 2017 to 2019, vast swathes of eastern Australia were affected by the severe and devastating Tinderbox Drought. Here, we present the first extended drought climatology for New England, spanning 1880 to 2022, and explore trends in droug…
View article: Algernon Henry Belfield and the Eversleigh Weather Diaries, 1877-1922
Algernon Henry Belfield and the Eversleigh Weather Diaries, 1877-1922 Open
At nine in the morning on a cold Friday at the end of June 1922, Algernon Henry Belfield made his way to his weather station on his property, Eversleigh, sixteen kilometres west of Armidale, to observe and record that morning's weather. Ma…
View article: Atmospheric trends explained by changes in frequency of short-term circulation patterns
Atmospheric trends explained by changes in frequency of short-term circulation patterns Open
The circulation of the atmosphere is subject to natural and anthropogenic forcings that alter the energy balance of the climate system. In each hemisphere the zonally averaged atmospheric circulation can be represented by a single overturn…
View article: Australian climate warming: observed change from 1850 and global temperature targets
Australian climate warming: observed change from 1850 and global temperature targets Open
Mean annual temperature is often used as a benchmark for monitoring climate change and as an indicator of its potential impacts. The Paris Agreement of 2015 aims to keep the global average temperature well below 2°C above pre-industrial le…
View article: Consolidating historical instrumental observations in southern Australia for assessing pre-industrial weather and climate variability
Consolidating historical instrumental observations in southern Australia for assessing pre-industrial weather and climate variability Open
Human-induced climate change has resulted in long-term drying trends across southern Australia, particularly during the cool season, with the most pronounced impacts observed in the southwest since the 1970s. Although these trends have bee…
View article: Formalizing Trust in Historical Weather Data
Formalizing Trust in Historical Weather Data Open
Historical instrumental weather observations are vital to understanding past, present, and future climate variability and change. However, the quantity of historical weather observations to be rescued globally far exceeds the resources ava…
View article: Comment on cp-2021-178
Comment on cp-2021-178 Open
Wet seasons may be characterized by the frequency of wet/dry days, duration of wet/dry spells, and season length. These properties are investigated for Cape Town using rainfall data from four weather stations in the Cape Town metropolitan …
View article: Reply on RC2
Reply on RC2 Open
Abstract. There is considerable import in creating more complete, better understood holdings of early meteorological data. Such data permit an improved understanding of climate variability and long-term changes. Early records are particula…
View article: Comment on cp-2021-127
Comment on cp-2021-127 Open
Abstract. There is considerable import in creating more complete, better understood holdings of early meteorological data. Such data permit an improved understanding of climate variability and long-term changes. Early records are particula…
View article: Daily temperature data at Adelaide, Australia taken in a Glaisher thermometer stand (1856–1952) and a homogenised daily temperature dataset for Adelaide (1856–2019)
Daily temperature data at Adelaide, Australia taken in a Glaisher thermometer stand (1856–1952) and a homogenised daily temperature dataset for Adelaide (1856–2019) Open
23000_Adelaide_Glaisherstand_Tx_data.tsv and 23000_Adelaide_Glaisherstand_Tn_data.tsv: Daily maximum and minimum temperature observations for Adelaide,South Australia, taken in a Glaisher thermometer stand from November 1856 to July 1947. …
View article: Daily temperature data at Adelaide, Australia taken in a Glaisher thermometer stand (1856–1952) and a homogenised daily temperature dataset for Adelaide (1856–2019)
Daily temperature data at Adelaide, Australia taken in a Glaisher thermometer stand (1856–1952) and a homogenised daily temperature dataset for Adelaide (1856–2019) Open
23000_Adelaide_Glaisherstand_Tx_data.tsv and 23000_Adelaide_Glaisherstand_Tn_data.tsv: Daily maximum and minimum temperature observations for Adelaide,South Australia, taken in a Glaisher thermometer stand from November 1856 to July 1947. …
View article: The world's longest known parallel temperature dataset: A comparison between daily Glaisher and Stevenson screen temperature data at Adelaide, Australia, 1887–1947
The world's longest known parallel temperature dataset: A comparison between daily Glaisher and Stevenson screen temperature data at Adelaide, Australia, 1887–1947 Open
Weather observing stations are subject to changes in instrumentation, location and surrounding environment over time. Parallel observations between old and new conditions are therefore vital to ensure that a reliable dataset can be built a…
View article: Climate indices in historical climate reconstructions: a global state of the art
Climate indices in historical climate reconstructions: a global state of the art Open
Narrative evidence contained within historical documents and inscriptions provides an important record of climate variability for periods prior to the onset of systematic meteorological data collection. A common approach used by historical…
View article: An evaluation of the performance of the 20th Century Reanalysis version 3
An evaluation of the performance of the 20th Century Reanalysis version 3 Open
The performance of a new historical reanalysis, the NOAA-CIRES-DOE 20th Century Reanalysis Version 3 (20CRv3), is evaluated via comparisons with other reanalyses and independent observations. This dataset provides global, 3-hourly estimate…
View article: Revisiting the 1888 Centennial Drought
Revisiting the 1888 Centennial Drought Open
Droughts are a key feature of Australia’s climate and can lead to water shortages, crop failure and economic instability. Historical droughts are an important source of information to better understand recent droughts and how they might be…
View article: An Evaluation of the Performance of the Twentieth Century Reanalysis Version 3
An Evaluation of the Performance of the Twentieth Century Reanalysis Version 3 Open
The performance of a new historical reanalysis, the NOAA–CIRES–DOE Twentieth Century Reanalysis version 3 (20CRv3), is evaluated via comparisons with other reanalyses and independent observations. This dataset provides global, 3-hourly est…
View article: Climate indices in historical climate reconstructions: A global state-of-the-art
Climate indices in historical climate reconstructions: A global state-of-the-art Open
Evidence contained within historical documents and inscriptions provides an important record of climate variability for periods prior to the onset of systematic meteorological data collection. A common approach used by historical climatolo…
View article: Australian warming: observed change and global temperature targets
Australian warming: observed change and global temperature targets Open
Quantifying warming of the Earth’s climate system since the late 19th century and the ratio of regional to global warming are required when examining implications of Paris Agreement global warming targets. To estimate these terms reliably,…
View article: The Australian Science Communicators conference 2020
The Australian Science Communicators conference 2020 Open
This special issue of JCOM features six commentary articles from the research stream of the Australian Science Communicators conference, held in February 2020. These opportunistic assessments and deliberate analyses explore important theme…
View article: Unlocking Pre-1850 Instrumental Meteorological Records: A Global Inventory
Unlocking Pre-1850 Instrumental Meteorological Records: A Global Inventory Open
Instrumental meteorological measurements from periods prior to the start of national weather services are designated “early instrumental data.” They have played an important role in climate research as they allow daily to decadal variabili…
View article: Meteorological observations for <i>Eversleigh</i> Station, near Armidale, New South Wales, Australia: 1877–1922
Meteorological observations for <i>Eversleigh</i> Station, near Armidale, New South Wales, Australia: 1877–1922 Open
Historical weather observations on the daily scale are vital for the improvement of reanalysis products and the analysis of long‐term variability of extreme events. While daily datasets extend for several centuries in parts of the Northern…
View article: Rescuing Climate Data as a Scientific and Communication Bridge.
Rescuing Climate Data as a Scientific and Communication Bridge. Open
In this article, Ashcroft explores the ways that citizen science can bring together professional scientific researchers and the wider public. Ashcroft shows how efforts to “rescue” historical weather data—a vital source of information abou…
View article: Towards a more reliable historical reanalysis: Improvements for version 3 of the Twentieth Century Reanalysis system
Towards a more reliable historical reanalysis: Improvements for version 3 of the Twentieth Century Reanalysis system Open
Historical reanalyses that span more than a century are needed for a wide range of studies, from understanding large‐scale climate trends to diagnosing the impacts of individual historical extreme weather events. The Twentieth Century Rean…
View article: Historical extreme rainfall events in southeastern Australia
Historical extreme rainfall events in southeastern Australia Open
The cities of Melbourne, Sydney and Adelaide are home to almost half of the Australian population, and are often exposed to extreme rainfall events and high year-to-year rainfall variability. However the majority of studies into rainfall i…
View article: NOAA-CIRES-DOE Twentieth Century Reanalysis Version 3
NOAA-CIRES-DOE Twentieth Century Reanalysis Version 3 Open
The Twentieth Century Reanalysis Project, produced by the Earth System Research Laboratory Physical Sciences Division from NOAA and the University of Colorado Cooperative Institute for Research in Environmental Sciences using resources fro…
View article: The International Surface Pressure Databank version 4
The International Surface Pressure Databank version 4 Open
This dataset contains the International Surface Pressure Databank version 4.7 (ISPDv4), the world's largest collection of pressure observations. It has been gathered through international cooperation with data recovery facilitated by the A…