How a Smart Atmosphere Specialist Works
Atmosphere appears to be a subjective concept. It's becoming increasingly quantifiable. In a controlled study, office workers scored 61 percent higher on cognitive tests in a simulated green building environment compared to a conventional one and 101 percent higher under enhanced ventilation conditions. Nothing about the furniture, finishes, or view has changed.
What changed were carbon dioxide concentrations and volatile organic compound levels, which are both invisible, controllable, and routinely ignored in interior specifications.
The specialist who bridges the gap between how a space looks and how it functions is doing a job that didn't exist twenty years ago.
How does a Smart Atmosphere Specialist work?
A smart atmosphere specialist approaches the indoor environment as a measurable system with four interconnected channels: air quality, thermal conditions, light, and sound.
The method operates in a loop. Conditions are continuously measured using sensors rather than assessed once at handover. Targets are set based on established standards and research evidence. Building systems are dynamically controlled in response to occupancy and conditions, rather than following fixed schedules. The outcomes are then adjusted after being verified against both instrument data and occupant feedback. The role falls between interior design, building services, and data analysis because the decisions that determine indoor environmental quality are made by all three and not coordinated by any of them by default.
The evidence that atmosphere is performance
The most cited work in this field is from a Harvard research program. In a controlled exposure study, participants worked in simulated conventional, green, and enhanced green environments. On average, cognitive function scores were 61 percent higher on the green building day and 101 percent higher on the two enhanced green days than on the conventional day, with volatile organic compounds and carbon dioxide independently influencing scores.
Performance improved significantly under enhanced conditions in all nine cognitive domains tested (Allen, MacNaughton, Satish, Santanam, Vallarino, & Spengler, 2016). The size of those numbers elicits skepticism, as it should. However, a subsequent study moved from simulation to real buildings, recruiting 109 participants from ten high-performing office buildings in five US cities, all of which already exceeded the relevant ventilation standard and had low volatile organic compound concentrations.
Even in buildings that were all performing well, working in a green-certified building resulted in a roughly 26% increase in cognitive function scores.
The same study discovered that lowering total volatile organic compound concentrations from approximately 580 micrograms per cubic meter to about 40 resulted in a 61 percent increase in cognitive scores in the previous controlled study, highlighting the importance of air chemistry (MacNaughton et al., 2017). The context that makes this important is simple. People spend approximately 90% of their time indoors (Allen et al., 2016).
The four channels
Air. The relationship between ventilation rate and work performance predates the current research wave: a review of the available literature found consistent associations between higher outdoor air supply rates and improved office performance (Seppanen, Fisk, & Lei, 2006), and an earlier analysis estimated significant national-scale productivity and health gains from better indoor environments (Fisk, 2000).
Carbon dioxide concentration serves as a proxy for ventilation adequacy, and studies have investigated the direct effects of low to moderate concentrations on decision-making performance (Satish et al., 2012). Volatile organic compounds are found in finishes, adhesives, furniture, and cleaning products, so they are primarily the responsibility of interior designers rather than engineers.
Thermal. In the field study, participants whose conditions fell within the thermal comfort zone defined by the relevant standard performed about 5 percent higher on cognitive simulations than those outside it (COGfx Study, 2017).
The comfort zone is conventionally defined as the range of temperature and humidity within which fewer than 10 percent of occupants report dissatisfaction.
Light. The same research associated higher daytime light exposure with better sleep and, through it, measurably higher cognitive function the following day, with effect sizes calculated against a 300 lux change in illuminance (COGfx Study, 2017).
Atmosphere in one part of the day affects performance in another.
Sound. Acoustic conditions complete the set, governing concentration, speech privacy, and perceived comfort, and are frequently the first thing occupants complain about in open-plan spaces.
The specialist's distinctive contribution is treating these as one system. A ventilation increase that introduces fan noise has traded one channel for another. A glazing decision that improves daylight and raises cooling load has done the same.
The honest counterweight
This field arouses commercial interest, and a responsible practitioner should understand where the evidence is contested. A meta-analysis of 37 studies on the relationship between carbon dioxide and cognition identified nine that met methodological criteria and did not involve specialized occupational groups such as astronauts, submariners, or pilots.
The only statistically significant finding from studies manipulating carbon dioxide directly was decreased performance on one specific decision-making instrument at higher concentrations. In studies involving ventilation manipulation, the authors discovered a relatively consistent decrease in the speed of several cognitive functions, including attention, executive functioning, reasoning, calculation, and text processing, at lower ventilation rates, though accuracy did not decrease significantly (Du et al., 2025).
The reasonable reading is that ventilation effects on cognitive speed are reasonably well supported, that the dramatic headline percentages are based on controlled conditions with a specific test instrument, and that the field requires more independent replication.
Designers should specify good ventilation because the evidence supports it and the cost of error is low, rather than because doubling cognitive performance is guaranteed.
The layer most schemes forget
Acoustics should be treated separately because it is the channel about which occupants complain the most and designers specify the least. Research on open-plan offices has consistently identified noise, particularly intelligible speech from colleagues, as the primary source of dissatisfaction and self-reported productivity loss (Kim & de Dear, 2013).
The mechanism is specific: irrelevant speech interferes with short-term memory and reading comprehension in a way that unintelligible background noise does not (Haka et al., 2009), which is why a busy cafe can be easier to concentrate in than a quiet office with only one conversation audible. The design responses are all interior choices.
Absorptive ceiling and wall treatments reduce reverberation. The height of the screen and the spacing between workstations control the direct sound paths. Sound masking raises the background level, making speech less understandable as distance increases, as measured by the distraction distance measure used in international open plan acoustic standards (Hongisto, Haapakangas, Varjo, Helenius, & Koskela, 2016).
Enclosed rooms allow for concentrated work. Because these interact with the other channels, they should be included in an integrated assessment rather than a separate acoustic report produced after the layout has been fixed.
An absorptive ceiling alters light reflectance. A partition that improves speech privacy impedes air movement. The specialist's role is to hold all four channels open at the same time.
What good practice looks like in operation
The working method
Four steps define the practice, and the difference from conventional design is that none of them stops at handover.
Measure continuously. Sensors for carbon dioxide, particulate matter, volatile organic compounds, temperature, humidity, illuminance, and sound level produce a record rather than a snapshot. A building commissioned once and never measured again is operating on assumption.
Set explicit targets. Ventilation rates, comfort ranges, illuminance and melanopic targets, and acoustic criteria are all specifiable numbers drawn from published standards and research.
Control dynamically. Demand-controlled ventilation responds to actual occupancy rather than a fixed timetable.
Lighting adjusts to daylight availability. Cooling responds to real load. This is where the word "smart" earns its place, and it is largely a matter of sensors feeding control logic.
Verify and adjust. Instrument data establishes what the conditions are. Occupant feedback establishes whether people find them acceptable, which is a different question. Both are required, because a space can meet every numerical target and still be disliked.
Post-occupancy evaluation, long established in building performance research, remains the method for closing that loop, and the evidence that ventilation rate affects both perceived air quality and self-reported productivity dates back well before the current interest in smart systems (Wargocki, Wyon, Sundell, Clausen, & Fanger, 2000).
Why the tropics need a different model
This is the point at which imported standards fail, and it has enormous implications for anyone practicing in Indonesia. Conventional thermal comfort models are based on the predicted mean vote approach, which was developed largely from climate chamber studies in temperate conditions (Fanger, 1970), and result in narrow acceptable temperature bands that are typically delivered by mechanical cooling. When used directly in equatorial conditions, they result in buildings that are tightly sealed, heavily air-conditioned, and costly to operate.
The adaptive comfort model, developed in the late 1990s based on field studies in a variety of climates, established that occupants of naturally ventilated buildings tolerate a much broader range of temperatures and that acceptable indoor temperature is related to prevailing outdoor conditions (de Dear & Brager, 1998).
People adapt via clothing, activity, air movement, and expectation, and their comfort zone shifts accordingly. Subsequent work transformed this into adaptive standards designed to support lower-energy building operation (Nicol and Humphreys, 2002).
The practical consequences in Jakarta are clear. Air movement replaces temperature reduction, so ceiling fans and cross ventilation increase the comfort range at a fraction of the energy cost of lowering the setpoint.
Humidity control is frequently more important than temperature, and the green-certified buildings in the Harvard field study were generally less humid than their counterparts, which was one of the reasons more of their occupants sat within the comfort zone (MacNaughton et al., 2017). Mixed mode operation, which alternates between natural ventilation and mechanical cooling as conditions permit, is frequently the correct solution rather than a compromise.
A specialist who applies a temperate standard unmodified to a tropical building will end up with something uncomfortable, expensive, and excessively carbon intensive.
Where the interior designer's decisions land
It is worth being specific about which choices belong to this discipline rather than to mechanical engineering. Material and finish selection determines volatile organic compound emission. Furniture layout determines whether conditioned air and daylight actually reach people.
Ceiling treatment and soft surfaces determine reverberation. Glazing treatment, shading, and internal reflectance determine both daylight availability and glare. Partition height and enclosure determine acoustic separation and air movement simultaneously.
Every one of those is an interior decision with an environmental consequence, which is precisely why the role belongs inside interior design education rather than adjacent to it.
What the discipline requires
Four capabilities, and their combination is unusual. Technical proficiency in building physics, including ventilation, thermal behavior, acoustics, and photometry. Data literacy is required because the work involves continuous measurement that must be interpreted rather than simply collected.
Because the interventions are design decisions, they must be spatial and materially appropriate. And a critical reading of evidence, given the disparity between marketing claims and replicated findings in this field. Much of this is built upon by studying Interior Design in conjunction with Psychology, Digital Media Design, and Business Administration, which connects environmental decisions to human response, monitoring systems, and operating costs (Raffles Jakarta, 2026a; Raffles Jakarta, 2026b).
Teaching by practicing professionals is important because sensing technology and standards are rapidly evolving (Raffles Jakarta, 2026c), and industrial attachment through the Center of Professional Development places students in operational buildings where conditions can be measured rather than assumed (Raffles Jakarta, 2026d).
The underlying idea is worth incorporating into any project. When a room appears to be finished, it is still incomplete. It is finished when it performs, and the only way to know if it does is to measure it while people are using it.
Frequently Asked Questions
What does a smart atmosphere specialist actually do?
They manage indoor environmental quality as a measurable system covering air, thermal conditions, light, and sound. The work involves continuous sensor measurement rather than one-time commissioning, setting explicit numerical targets, controlling building systems dynamically in response to occupancy and conditions, and verifying results against both instrument data and occupant feedback.
Does indoor air quality really affect thinking?
Research indicates it does, though effect sizes vary by study design. A controlled exposure study found cognitive scores 61 percent higher under simulated green building conditions and 101 percent higher under enhanced ventilation compared with conventional conditions.
A field study across ten high-performing buildings found roughly a 26 percent increase associated with green certification.
How much does thermal comfort matter for performance?
Measurably. In a field study, participants whose conditions fell within the standard thermal comfort zone performed about 5 percent higher on cognitive simulations than those outside it. The comfort zone is conventionally defined as conditions within which fewer than 10 percent of occupants report dissatisfaction.
Is the evidence on carbon dioxide and cognition settled?
Not entirely. A meta-analysis narrowing 37 studies to nine methodologically strong ones found that for direct carbon dioxide manipulation, the only statistically significant result was reduced performance on one specific decision-making instrument.
Studies manipulating ventilation showed more consistent declines in cognitive speed, though not accuracy. Ventilation effects are better supported than dramatic headline figures suggest.
Why do tropical buildings need different comfort standards?
Because conventional comfort models were developed largely from temperate climate chamber studies and produce narrow temperature bands requiring mechanical cooling.
The adaptive comfort model, developed from field studies in the late 1990s, established that occupants of naturally ventilated buildings accept a wider temperature range related to outdoor conditions, adapting through clothing, air movement, and expectation.
Which atmosphere decisions belong to interior designers?
More than most assume. Finishing and furniture selection determine volatile organic compound emission, layout determines whether conditioned air and daylight reach people, ceiling and soft surface treatment determine reverberation, and glazing and shading decisions determine both daylight and glare. These are interior decisions with direct environmental consequences.
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References
Allen, J. G., MacNaughton, P., Satish, U., Santanam, S., Vallarino, J., & Spengler, J. D. (2016). Associations of cognitive function scores with carbon dioxide, ventilation, and volatile organic compound exposures in office workers: A controlled exposure study of green and conventional office environments. Environmental Health Perspectives, 124(6), 805 to 812. https://doi.org/10.1289/ehp.1510037
COGfx Study. (2017). Drivers of higher cognitive function scores. https://thecogfxstudy.com/study-2/higher-cognitive-function/
Construction Physics. (2025). We need more research on how carbon dioxide affects cognition. https://www.construction-physics.com/p/we-need-more-research-on-how-co2
de Dear, R., & Brager, G. S. (1998). Developing an adaptive model of thermal comfort and preference. ASHRAE Transactions, 104(1), 145 to 167. https://escholarship.org/uc/item/4qq2p9c6
Fanger, P. O. (1970). Thermal comfort: Analysis and applications in environmental engineering. Danish Technical Press. https://www.worldcat.org/title/thermal-comfort-analysis-and-applications-in-environmental-engineering/oclc/109064
Fisk, W. J. (2000). Health and productivity gains from better indoor environments and their relationship with building energy efficiency. Annual Review of Energy and the Environment, 25, 537 to 566. https://doi.org/10.1146/annurev.energy.25.1.537
Haka, M., Haapakangas, A., Keränen, J., Hakala, J., Keskinen, E., & Hongisto, V. (2009). Performance effects and subjective disturbance of speech in acoustically different office types: A laboratory experiment. Indoor Air, 19(6), 454 to 467. https://doi.org/10.1111/j.1600-0668.2009.00608.x
Hongisto, V., Haapakangas, A., Varjo, J., Helenius, R., & Koskela, H. (2016). Refurbishment of an open plan office: Environmental and job satisfaction. Journal of Environmental Psychology, 45, 176 to 191. https://doi.org/10.1016/j.jenvp.2015.12.004
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Lowe, R. J., Huebner, G. M., & Oreszczyn, T. (2018). Possible future impacts of elevated levels of atmospheric carbon dioxide on human cognitive performance and on the design and operation of ventilation systems in buildings. Building Services Engineering Research and Technology, 39(6), 698 to 711. https://doi.org/10.1177/0143624418784536
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Raffles Jakarta. (2026a). Interior design. https://www.raffles-indonesia.com/interiordesign
Raffles Jakarta. (2026b). Programs offered. https://www.raffles-indonesia.com/programmes
Raffles Jakarta. (2026c). International academic team. https://www.raffles-indonesia.com/international-creative-practitioners
Raffles Jakarta. (2026d). Raffles career development. https://www.raffles-indonesia.com/raffles-career-development
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Vehvilainen, T., Lindholm, H., Rintamaki, R., Paakkonen, A., Hirvonen, O., Niemi, J., & Vinha, J. (2015). High indoor carbon dioxide concentrations in an office environment increases the transcutaneous carbon dioxide level and sleepiness during cognitive work. Journal of Occupational and Environmental Hygiene, 13(1), 19 to 29. https://doi.org/10.1080/15459624.2015.1076160
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