DAILY CO2 CONCENTRATION IN NORTHERN SURABAYA CITY

CO2 concentration is one air quality parameter set by WHO. High concentrations of carbon dioxide will have an impact on human health. a gas that can cause greenhouse effect in city like Surabaya. This study aims to reveal the dynamics northern Surabaya, which center urban activity type research descriptive analytic with quantitative approach. The population used based division administrative regions Surabaya u tara section. Sampling carried out purposive way, where each land use taken five locations. Data collection techniques measurement and observation. data analysis technique descriptive. results showed there was difference average morning evening. All sites above safe threshold There increase evening variably. recorded at 436.05 ppm increased night 518 ppm. highest occurred Colombo road 467 lowest 345 Bangunsari road. Morokrembangan road, 558 460 ppm.
 Keywords: concentration, pollution,