William (Bill) Bloss


School of Geography, Earth & Environmental Sciences, University of Birmingham

Atmospheric processing affects the current and future composition of our air, with impacts upon human and environmental health, air quality and climate.

My group's work improves scientific understanding of the causes of poor air quality, and hence the development of effective policy measures for Clean Air.  We focus upon the sources of atmospheric pollutants, and the chemical processes which remove some air pollutants and produce others.


BCC (Flickr) Photo of Birmingham.jpg



Atmospheric processing affects the current and future composition of our air, with impacts upon human and environmental health, air quality and climate.  My research group addresses areas of atmospheric chemistry and clean air science, including

- Understanding the sources and transformations of air pollutants in the urban atmosphere, ranging from trends in the UK to developing megacities such as Delhi

- Quantifying the sources and sinks for atmospheric oxidants: impacts from processes such as new reactive nitrogen emissions and particulate-mediated renoxification

- Applying air pollution science to improve local and regional air quality policy measures

Our work combines atmospheric field measurements, simulation chamber and laboratory studies and numerical modelling approaches.  Fundamental understanding of the atmospheric chemical system is placed in an applied context: working with partners to apply clean air science for improved human and environmental health.

This is my personal research website.  Please also see my official University of Birmingham homepage. 

Scroll down for news, current projects and research group members.


Opportunities: I'm happy to discuss ideas for PhD research projects and applications for funded fellowship schemes.  Please send me an email (ideally with your CV and an outline of your interests and ideas).  Our funded job opportunities within research projects will always be advertised externally through sites like jobs.ac.uk, and on the University jobs pages.

Research Projects

WM-Air: Clean Air Science for the West Midlands

WM-Air is a five-year project to apply Birmingham's environmental science expertise to deliver improved air quality and health across the West Midlands, working in partnership with over 20 public and private sector stakeholder organisations.


Air Pollutant Sources in the Delhi NCR

ASAP-Delhi will provide authoritative assessment of the sources, formation process, burden and characteristics of air pollutants in Delhi, with a philosophy of deriving pollutant source, budget and behaviour insights from direct atmospheric observations.


Air Pollution Sources and Processes in Beijing

The AIRPOLL and AIRPRO projects will identify the emission sources and chemical transformations giving rise to poor air quality - haze - in Beijing.


Atmospheric Reactive Nitrogen Cycling over the Ocean

Photoenhanced reactions on aerosol particle surfaces may convert NOx sinks into NOx precursors, changing atmospheric oxidising capacity.  We are investigating this new mechanism in the laboratory and through field measurements at the Cape Verde atmospheric observatory.


Birmingham Air Quality Supersite (BAQS)

BAQS is one of three national urban air quality supersites, providing detailed online characterisation of air pollution levels, responses to policy interventions and emerging trends



Transition is an interdisciplinary network undertaking innovative research to address emerging indoor/outdoor air quality challenges across UK surface transport, in the Net Zero context


Research Group (See also WM-Air Team)

Dr Salim Alam

Postdoctoral Research Fellow

APHH India - Delhi

Birmingham Air Quality Supersite

Dr Roberto Sommariva

Postdoctoral Research Fellow

Total Ozone Reactivity / Marine HONO Production

Personal Website


Dr Vasileios Matthaios

Marie Curie Fellow

Real world vehicle emissions & in-cabin exposure

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Dr Daniel Rooney

Research Technician

Working on ASAP-Delhi and WM-Air projects

Dr Siqi Hou

Air Quality Supersite Researcher

Birmingham Air Quality Supersite (BAQS)

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Dr Andrea Mazzeo

Regional Air Quality Modelling

WM-Air Project

Karn Vohra

Doctoral Researcher

Earth Observation tools for determining urban air quality and vegetation health

Led by Eloise Marais

Helen Pearce

Doctoral Researcher

Modelling traffic-derived air pollution

(with Zhaoya Gong, Xiaoming Cai)


Maryam Makanvand

Doctoral Researcher

Air Quality and Health

Manna Al-Wadei

Doctoral Researcher

Particulate Matter (PM2.5) Composition, Sources and Toxicity in Dammam, Saudi Arabia.

With Zongbo Shi

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Steven Thomson

Doctoral Researcher

Oxidative Potential of particulate matter from Beijing

With Zongbo Shi

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Nicole Cowell 

Doctoral Researcher

Novel Air Quality Sensors for PM Measurement

Led by Lee Chapman

Research Group Alumni

Former PhD / Graduate Students

Dr Tara Rasoul

ClNO2 Modelling

Danny Blenkhorn

Now at Kore Technology Ltd

Lubna Al-Saadi

Lecturer at the University of Qatar

Hao Huang

Air Monitors UK, Gloucester

Jian Zhong

WM-Air Research Fellow, University of Birmingham

Suad Al-Kindi

Lecturer at Higher College of Technology, Muscat, Oman​

Salim Alam

Research Fellow at Birmingham​

Vivien Bright

Postdoc position at Cambridge​

Kate Faloon

Postdoc positions at Leicester and Leeds / NCAS

Lucy Concannon

MPhil Student: Moved to Azko Nobel

Former Postdocs

Louisa Kramer

Now at Ricardo AEA

Leigh Crilley

Now at York University, Toronto

Mike Newland

Postdoc positions at UEA and the University of York

Marie Camredon

Lecturer at LISA, Paris

Juan Najera

CIBION, Buenos Aires

Shana Saha

BSP Optical Performance Centre, Birmingham

Catherine Bale

Postdoc position at the University of Leeds

Microsoft ExCel - Advanced

Microsoft Word - Advanced

Power Point - Proficient

Adobe - Proficient

French - Mother Tongue

Spanish - Advanced


William Bloss - Biography


Google Scholar

Publons / Reseacher-ID Profile


Research Funding

UKRI funding via Grants-on-the-Web

External Profiles



Professor of Atmospheric Science, University of Birmingham

2007+ :  School of Geography, Earth & Environmental Sciences, University of Birmingham

2001 - 2006: Research Fellow; Lecturer, School of Chemistry, University of Leeds. 


1999 - 2001: Caltech Postdoctoral Scholar, NASA Jet Propulsion Laboratory 

1995 - 1999: Ph.D. (Physical Chemistry), University of Cambridge

1992 - 1995: BA (Natural Sciences – Chemistry), University of Cambridge.

1991 - 1992: Institute of Oceanographic Sciences, Deacon Laboratory


Head of School, Geography, Earth and Environmental Sciences; University of Birmingham (2016 - 2020)

NERC: Core Peer Review College (2015 -)

Fellow of the Royal Society of Chemistry (FRSC)

Chair, RSC Environmental Chemistry Group (2013 - 2015)

Co-editor, Atmospheric Chemistry and Physics (to 2016)