ASE & MSE

Overview

ASE instrument and observation methods

Overview of ASE

MSE instrument and observation methods

Overview of MSE

Flight Statistics

Data obtained by ASE and MSE are listed below (since Dec 2005).

latest CO2 data for the SYD line including those in the first ASE phase (1993-) are available at World Data Center for Green house Gases (WDCGG).

Flight Statistics Update

Locations and Statistics of Air Samples (as of Mar 2025)

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Number of Sampling Flights
ASE 397
MSE 128
Total 525
Number of Air Samples
ASE 4608
MSE 1820
Total 6428
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Number of Air Samples in 5° bins (as of Mar 2025)

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Year Date From/To Aircraft
2025 21 Jan ORD JA735J
2025 30 Jan SYD JA732J
2025 19 Feb BKK JA743J
2025 26 Feb SYD JA741J
2025 26 Feb ORD JA733J
2025 18 Mar SYD JA740J
2025 25 Mar ORD JA740J
2025 26 Mar BKK JA737J
Number of Sampling Flights (2025)
ASE 0
MSE 8
Total 8
Number of Air Samples (2025)
ASE 0
MSE 95
Total 95
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Jump to Annual Statistics

List of Airports

Air samplings are conducted between the Narita or Haneda airport (Japan) and one of the following airports:

Asia
BKK Bangkok, Thailand
CTS Chitose, Japan
FUK Fukuoka, Japan
HKG Hong Kong, China
ICN Incheon, South Korea
ISG Ishigaki, Japan
OKA Naha, Japan
SHA/PVG Shanghai, China
SIN Singapore, Singapore
Pacific
BNE Brisbane, Australia
CNS Cairns, Australia
GUM Guam, USA
HNL Honolulu, USA
SYD Sydney, Australia
Europe
CDG Paris, France
DME Moscow, Russia
LHR London, UK
North America
JFK New York, USA
LAX Los Angels, USA
ORD Chicago, USA
SFO San Francisco, USA