Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

What is Weather?01:07

What is Weather?

17.2K
Overview
17.2K
Precipitation Gravimetry01:03

Precipitation Gravimetry

12.8K
Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
12.8K
Precipitation and Co-precipitation01:17

Precipitation and Co-precipitation

4.8K
Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
4.8K
Temperature Measurement Sites01:14

Temperature Measurement Sites

4.3K
A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder.
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
4.3K
Review and Preview01:13

Review and Preview

9.5K
Data are individual items of information obtained from a population or sample. Data may be classified as qualitative (categorical), quantitative continuous, or quantitative discrete. Because it is not practical to measure the entire population in a study, researchers use samples to represent the population. A random sample is a representative group from the population chosen by using a method that gives each individual in the population an equal chance of being included in the sample. Random...
9.5K
Precipitation Processes01:12

Precipitation Processes

5.0K
The experimental conditions in a gravimetric analysis should be optimized to maximize the particle size and purity of the obtained precipitate. Ideally, the concentration of the precipitating reagent should be low with effective stirring to maintain low relative supersaturation for the growth of large crystals. In homogeneous precipitation, the precipitant is slowly generated by a chemical reaction in the solution to avoid local reagent excesses. For example, urea decomposes gradually to...
5.0K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Nomogram for subsyndromal delirium after cardiac surgery with cardiopulmonary bypass: a retrospective cohort study.

Frontiers in medicine·2026
Same author

Cost-effectiveness of single-dose versus two-dose HPV vaccination: a Markov cohort modelling analysis of a Kenya-India LMIC composite.

Frontiers in public health·2026
Same author

The prognostic value of red cell distribution width-to-albumin ratio for 28-day mortality in sepsis patients: a multicenter analysis based on the eICU Collaborative Research Database.

Frontiers in medicine·2026
Same author

A Mechanism-Guided Strategy by Weighting Key Reaction States for Rational Engineering of ω-Transaminase toward Bulky Chiral Amines.

Organic letters·2026
Same author

Machine learning-based prediction of immune infiltration patterns in extrahepatic cholangiocarcinoma.

Discover oncology·2026
Same author

Glycine and N-acetylcysteine supplementation, with or without exercise, in brain health and functional aging: implications for sarcopenia and frailty in older adults.

Frontiers in nutrition·2026
Same journal

A Dataset with Bilingual TV Commands for Silent Speech Interfaces Using Electroencephalographic Signals.

Scientific data·2026
Same journal

BEAMSTER: Brain mEtAstases segMentation for STEreotactic Radiotherapy, A Retrospective MRI Dataset with Expert Segmentations.

Scientific data·2026
Same journal

Chromosomal-level genome assembly of Tetraponera attenuata (Hymenoptera: Formicidae).

Scientific data·2026
Same journal

High quality Chromosome-scale Genome Assembly of Phlebotomus perniciosus, a Vector of Zoonotic Leishmaniasis.

Scientific data·2026
Same journal

Characterisation Data of common pharmaceutical excipient Powders and Tablets for Formulation Development.

Scientific data·2026
Same journal

Chinese Electric Vehicle Policy Database: A Dataset of Policy Goals, Instruments, and Supply Chain Stages.

Scientific data·2026
See all related articles

Related Experiment Video

Updated: May 1, 2026

In Situ Soil Moisture Sensors in Undisturbed Soils
08:20

In Situ Soil Moisture Sensors in Undisturbed Soils

Published on: November 18, 2022

8.3K

Transcribing historical Canadian weather data.

Victoria Slonosky1,2, Rachel Black3,4, Lori Podolsky5

  • 1Open Data Rescue, Saint-Lambert, Canada. victoria.slonosky@mail.mcgill.ca.

Scientific Data
|April 29, 2026
PubMed
Summary
This summary is machine-generated.

Historical weather journals from 1768-1884 were digitized, providing millions of Canadian weather observations. This project enhances understanding of climate variability and extreme weather events over three centuries.

More Related Videos

BtM, a Low-cost Open-source Datalogger to Estimate the Water Content of Nonvascular Cryptogams
08:25

BtM, a Low-cost Open-source Datalogger to Estimate the Water Content of Nonvascular Cryptogams

Published on: March 25, 2019

9.1K
Simulating Temperature in a Soil Incubation Experiment
08:39

Simulating Temperature in a Soil Incubation Experiment

Published on: October 28, 2022

5.1K

Related Experiment Videos

Last Updated: May 1, 2026

In Situ Soil Moisture Sensors in Undisturbed Soils
08:20

In Situ Soil Moisture Sensors in Undisturbed Soils

Published on: November 18, 2022

8.3K
BtM, a Low-cost Open-source Datalogger to Estimate the Water Content of Nonvascular Cryptogams
08:25

BtM, a Low-cost Open-source Datalogger to Estimate the Water Content of Nonvascular Cryptogams

Published on: March 25, 2019

9.1K
Simulating Temperature in a Soil Incubation Experiment
08:39

Simulating Temperature in a Soil Incubation Experiment

Published on: October 28, 2022

5.1K

Area of Science:

  • Climatology
  • Historical Meteorology
  • Environmental Science

Background:

  • Historical weather records are crucial for understanding long-term climate variability.
  • Canadian historical weather data from 1768-1884 exist in handwritten archives outside Canada.
  • Digitizing these records is essential for climate research.

Purpose of the Study:

  • To transcribe and digitize historical Canadian weather journals from 1768-1884.
  • To create a machine-readable dataset of historical weather observations.
  • To expand knowledge of Canada's climate variability and extreme values.

Main Methods:

  • Transcription of handwritten weather journals from 46 Canadian locations.
  • Data sourced from U.S. National Archives and Records Administration (NARA) and UK Meteorological Office (UKMO).
  • Validation of transcribed data against original formats and modern units.

Main Results:

  • Digitized nearly 2 million weather observations from 1768-1884.
  • Included detailed records of weather variables (pressure, temperature, precipitation) and extreme events (floods, storms).
  • Data cover three to twenty variables, recorded multiple times daily.

Conclusions:

  • The NORTHERN project provides valuable sub-daily and extreme weather event data for Canada.
  • These data will improve understanding of three centuries of Canadian climate variability.
  • The dataset will enhance global reanalysis data products.