With respect to air environment in residential space, carbon dioxide, carbon monoxide, dust, bacteria, etc. have been listed as parameters of pollution until now. The degree of pollution with these parameters and mutual relationship of these parameters have been investigated. There have been also researches and investigations linking these parameters and ventilation as well as epidemiologicalresearches. In recent years under the increasing requirement on comfortable environment, the quality of airhas been evaluated including the odor as a parameter. However, the involvement seems to be only at the beginning. In this review, we will select the following odor from the researches concerning to odor in residential environment and describe the present conditions and problems in these investigations: outline of ventilation, body odor, tobacco odor, cooking odor, building odor, odor attached to room, and odor generated from sump pit.

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Concentrations of suspended particulate matter (SPM) at many air monitoring stations do not satisfy the environmental quality standard (EQS).High concentrations of SPM are suggested to be caused by particular meteorological conditions as well as through the increase of SPM-releasing sources.
Data collected in Fukuoka Prefecture in 1989 and 199 showed wide variation in the achievement of the EQS. So an investigation for these two years was carried out to determine what meteorological conditions contributed to high levels of SPM.
The relationship between atmospheric pressure patterns and average SPM concentrations in this area was examined. Results indicate that SPM concentration increased with the passing of travelling anticyclones and also during the summer monsoon.
Days during which SPM concentrations exceeded the EQS were classified into the three types according to the meteorological conditions at the time, 1) yellow sand type, 2) summer type and 3) travelling anticyclone type. Of these, the travelling anticyclone type mainly contributed to the high SPM concentrations. Yellow sand, while rare in occurrence, also significantly decreased the achievement of the EQS.
Samples of particulate matter were collected with high volume air samples. The compositions of samples taken during high concentration type conditions were compared with those in the usual low concentration days. Samples from the summer type showed increases in SO₄^2- rather than T-C, while those from the travelling anticyclone type showed an increase in both SO₄^2- and T-C. These results suggest that high concentrations of SPM found with the summer type conditions are caused by photochemical reaction, while those of the travelling anticyclone type are caused by the influence of an inversion layer associated with this type.

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An observation of lower atmosphere in Aizu Basin was carried out during Aug. 2nd to 3rd in 1989. The cooling of the lowest layer was observed in the afternoon on Aug. 2nd in spite of the downward net radiative flux at the time. AMeDAS data around the Aizu Basin suggested the airmass from the north of the Kanto Plain arrived at the basin in the late afternoon.
A closed circulation over the basin was not induced though the wind at 1000-2000 m level was weak. Because most of the basins in Japan are located at most 100 km apart from the ocean, the meteorological conditions in them are disturbed by the sea breeze or the extended sea breeze even in the cases of light gradient wind.

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The vertical turbulence structure in an above and urban canopy layer wereobserved in Sapporo city, Japan in July 1991, and November 1992.
Profiles of velocity fluctuation at, and Reynolds stress uw increased with height up to 1.5 h (h=7m, his the canopy height), and both had peaks at 1.5 h above the canopy, then from there decreased with increase in height. Sweep events, in which high velocity fluid from above move downwards toward the surface, and ejection events, in which low velocity fluid from below move upwards, occurred intermittently in and above the canopy. Profiles of the sweep had a large value under the 3 h, and the ejection had a peak between 1.5-3 h above the canopy. It shows the existence of coherent structure above the canopy. Peaks of σu and uw at 1.5 h were caused by the coherent structure above the canopy. The height of the roughness sublayer, that is, the height in which the buildings have a direct influence in the flow, was ap proximately 3-4 h.

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This paper describes the gas chromatographic (GC) and combined gas chromatographic/mass spectrometric (GC/MS) measurements of organic compounds extracted from airborne particles, which were collected in Chengdu, China. Possible sources of the compounds are indicated. The particulate samples were collected on glass-fiber filters using a medium-volume aerosol sampler, and followed by dichloromethane extraction in a Soxhlet's extractor. Each of the extracts was concentrated to one ml atroom temperature under reduced pressure and by blowing nitrogen gas, and subjected to GC and GC/MS. About 100 peaks appeared on the gas chromatogram and 77 compounds were identified by means of the GC/MS. Main pollutants of 27 kinds were determined quantitatively by GC. Large amounts of nicotine and benzo [a] pyrene were found in the airborne particles. The results showed that the air pollution in Chengdu area is in a status to be improved immediately.

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