The University of Tokyo · 지구·행성과학
M. Koike 교수의 연구실은 대기화학과 대기 중 오염물질의 순환을 중심으로, 특히 이산화탄소, 질소산화물, 오존층 파괴 물질 등 대기 성분의 장기적 변화와 화산 에어로졸, 기상 조건 등이 대기 화학에 미치는 영향을 연구하고 있습니다. 지상 기반 FTIR 분광법을 활용한 대기 성분 측정과 기후 모델링을 융합하여, 극지방 및 중위도 지역의 대기 오염과 오존층 변화를 정량적으로 분석하고 있습니다. 특히 화산 폭발 후 질소산의 농도 변화나 고위도 대기 중 수증기 및 수증기 기반 화학 반응 메커니즘에 대한 기초 연구를 수행하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
Ground based infrared observations of HNO 3 column amount at Lauder, New Zealand (45°S, 170°E), show significant increases in HNO 3 following the arrival of Pinatubo volcanic aerosols. The increase first became apparent in September 1991 when the HNO 3 amount was higher than that expected from the regular seasonal variation by 2.3 × 10 15 cm −2 , which corresponds to 16% of the unperturbed value. Between September 1991 and May 1993, the observed HNO 3 amounts were systematically higher, typicall
Abstract Two years of continuous in situ measurements of Arctic low‐level clouds have been made at the Mount Zeppelin Observatory (78°56′N, 11°53′E), in Ny‐Ålesund, Spitsbergen. The monthly median value of the cloud particle number concentration ( N c ) showed a clear seasonal variation: Its maximum appeared in May–July (65 ± 8 cm −3 ), and it remained low between October and March (8 ± 7 cm −3 ). At temperatures warmer than 0 °C, a clear correlation was found between the hourly N c values and t
Tropospheric carbon monoxide (CO) was measured throughout 2001 using ground‐based Fourier transform IR (FTIR) spectrometers at Moshiri (44.4°N) and Rikubetsu (43.5°N) observatories in northern Japan, which are separated by 150 km. Seasonal and day‐to‐day variations of CO are studied using these data, and contributions from various CO sources are evaluated using three‐dimensional global chemistry transport model (GEOS‐CHEM) calculations. Seasonal maximum and minimum FTIR‐derived tropospheric CO a
