Publication

Automated identification of local contamination in an Arctic aerosol time series

2021
Posters

Abstract

A common challenge of Atmospheric measurements in remote environments is to identify local pollution from nearby sources. During the MOSAiC (Multidisciplinary drifting Observatory for the Study of Arctic Climate) expedition, we measured aerosol and gaseous atmospheric composition on the bow of the research vessel Polarstern in the Arctic Ocean. Our measurements were occasionally impacted by pollution from the ship exhaust, or by ongoing activities on sea-ice such as passing skidoos or use of generators. We developed an automated method to identify such pollution events. Here, we present the algorithm used to clean the aerosol dataset collected during the MOSAiC expedition.

Official source

https://infoscience.epfl.ch/entities/publication/370a613c-8c2b-4dc4-934e-2240a028b511

About this result

This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

2021
Posters

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/370a613c-8c2b-4dc4-934e-2240a028b511

About this result

Related concepts (32)

Arctic sea ice decline

Sea ice in the Arctic has declined in recent decades in area and volume due to climate change. It has been melting more in summer than it refreezes in winter. Global warming, caused by greenhouse gas forcing is responsible for the decline in Arctic sea ice. The decline of sea ice in the Arctic has been accelerating during the early twenty‐first century, with a decline rate of 4.7% per decade (it has declined over 50% since the first satellite records). It is also thought that summertime sea ice will cease to exist sometime during the 21st century.

Air pollution

Air pollution is the contamination of air due to the presence of substances in the atmosphere that are harmful to the health of humans and other living beings, or cause damage to the climate or to materials. It is also the contamination of indoor or outdoor surrounding either by chemical activities, physical or biological agents that alters the natural features of the atmosphere. There are many different types of air pollutants, such as gases (including ammonia, carbon monoxide, sulfur dioxide, nitrous oxides, methane and chlorofluorocarbons), particulates (both organic and inorganic), and biological molecules.

Nonpoint source pollution

Nonpoint source (NPS) pollution refers to diffuse contamination (or pollution) of water or air that does not originate from a single discrete source. This type of pollution is often the cumulative effect of small amounts of contaminants gathered from a large area. It is in contrast to point source pollution which results from a single source. Nonpoint source pollution generally results from land runoff, precipitation, atmospheric deposition, drainage, seepage, or hydrological modification (rainfall and snowmelt) where tracing pollution back to a single source is difficult.

Related publications (4)

Automated identification of local contamination in an Arctic aerosol time series

Chat with Graph Search

Indirect Footprint of the 8 September 2023 Al Haouz (Morocco) Earthquake on Air Quality in Distant Cities

Southward shift in the zero-degree isotherm latitude (ZIL) in the Antarctic Peninsula

Identifying contaminated sediment problems associated with urban stormwater discharges in lakes