News

The ground-based observation data of ozone, carbon monoxide, and peroxyacyl nitrates at Rishiri Island, Japan are released.

• Ground-based observations of ozone, carbon monoxide, and peroxyacyl nitrates in air at Rishiri Island, Japan, in 1999-2000, DOI:10.17595/20241025.001

The ground-based observation data of Volatile Organic Compounds (VOCs) at Fukue Island, Rudong, and Mt. Tai are updated with the additional compounds.

• Ground-based observations of Volatile Organic Compounds (VOCs) in air at Fukue Island, Japan, in 2009, DOI:10.17595/20240719.001
• Ground-based observations of Volatile Organic Compounds (VOCs) in air at Rudong, China, in 2010, DOI:10.17595/20240719.002
• Ground-based observations of Volatile Organic Compounds (VOCs) in air at Mt. Tai, China, in 2006, DOI:10.17595/20240719.003

The CO₂ flux measurement data above the Kiryu Experimental Watershed are released.

• CO2 flux measurements above the Kiryu Experimental Watershed, DOI:10.17595/20240920.001

The atmospheric CH₄ mixing ratio data observed at the Hateruma and Ochiishi stations are updated with the latest data up to March 2024.

• Continuous Observational Data of Atmospheric CH₄ Mixing Ratios on Hateruma Island, DOI:10.17595/20160901.003
• Continuous Observational Data of Atmospheric CH₄ Mixing Ratios at Cape Ochiishi, DOI:10.17595/20160901.004

The latest version of the NIES-ML3 product of surface ocean CO2 data is released.

• NIES-ML3 ensemble product of surface ocean CO₂ concentrations and air-sea CO₂ fluxes reconstructed by using three machine learning models with new CO₂ trends, DOI:10.17595/20220311.001

The latest version of atmospheric trace gas data from the CONTRAIL is released.

• Atmospheric CO₂ mole fraction data of CONTRAIL-CME, DOI:10.17595/20180208.001
• Atmospheric CO₂ mole fraction data of CONTRAIL-CME (most recent data), DOI:10.17595/20210827.001
• Atmospheric trace gas data from the CONTRAIL flask air sampling, DOI:10.17595/20230725.001
• Atmospheric trace gas data from the CONTRAIL flask air sampling (the most recent data), DOI:10.17595/20230725.002

The year 2023 version of “ODIAC fossil fuel CO2 emission dataset” (ODIAC2023) is released.

• ODIAC Fossil Fuel CO₂ Emissions Dataset, DOI:10.17595/20170411.001

Ground-based observation data of Volatile Organic Compounds (VOCs) at Fukue Island, Rudong, and Mt. Tai are released.

• Ground-based observations of Volatile Organic Compounds (VOCs) in air at Fukue Island, Japan, in 2009, DOI:10.17595/20240719.001
• Ground-based observations of Volatile Organic Compounds (VOCs) in air at Rudong, China, in 2010, DOI:10.17595/20240719.002
• Ground-based observations of Volatile Organic Compounds (VOCs) in air at Mt. Tai, China, in 2006, DOI:10.17595/20240719.003

The Monsoon Asia Rice Calendar (MARC) is released.

• Monsoon Asia Rice Calendar (MARC): a gridded rice calendar in monsoon Asia based on Sentinel-1 and Sentinel-2 images, DOI:10.17595/20230728.001

Trace gas mole fraction data from air samples collected in the stratosphere over Japan are released.

• Trace gas mole fraction data from measurements of air samples collected in the stratosphere over Japan, DOI:10.17595/20240625.001

The column-averaged methane data based on ship and aircraft observations over the Western Pacific Ocean are released.

• Ship and aircraft in situ observation-based column-averaged dry-air mixing ratios of CH₄ (obs. XCH₄) over the Western Pacific Ocean, DOI:10.17595/20240531.001

The shipborne observation data of black carbon, ozone, methane, carbon monoxide, and carbon dioxide in the Arctic atmosphere are released.

• Shipborne Observations of Surface Black Carbon Aerosol Mass Concentrations and Ozone/Methane/Carbon Monoxide/Carbon Dioxide Mixing Ratios in the Arctic Atmosphere, DOI:10.17595/20240502.001

The atmospheric CH₄ and N₂O data from Novosibirsk are released as part of the aircraft sampling data in Siberia.

• Atmospheric CH₄ and N₂O data from the flask air sampling over Novosibirsk, DOI:10.17595/20240216.001

The bias-corrected climate scenario data based on CMIP6 (NIES2020) were released with additional surface pressure and total cloud cover data.

• Bias corrected climate scenarios over Japan based on CDFDM method using CMIP6 (NIES2020), DOI:10.17595/20210501.001

The atmospheric CH₄ and N₂O data from Surgut are released as part of the aircraft sampling data in Siberia.

• Atmospheric CH₄ and N₂O data from the flask air sampling over Surgut, DOI:10.17595/20240116.001

The latest version (Ver.2023.1) of the following dataset is released.

• Long-term global CO₂ fluxes estimated by NICAM-based Inverse Simulation for Monitoring CO₂ (NISMON-CO₂), DOI:10.17595/20201127.001

A dataset is released.

• Semi-continuous observational data for atmospheric CO₂ and CH₄ mixing ratios at Berezorechka, DOI:10.17595/20231117.001
• Semi-continuous observational data for atmospheric CO₂ and CH₄ mixing ratios at Karasevoe, DOI:10.17595/20231117.002
• Semi-continuous observational data for atmospheric CO₂ and CH₄ mixing ratios at Igrim, DOI:10.17595/20231117.003
• Semi-continuous observational data for atmospheric CO₂ and CH₄ mixing ratios at Noyabrsk, DOI:10.17595/20231117.004
• Semi-continuous observational data for atmospheric CO₂ and CH₄ mixing ratios at Demyanskoe, DOI:10.17595/20231117.005
• Semi-continuous observational data for atmospheric CO₂ and CH₄ mixing ratios at Savvushka, DOI:10.17595/20231117.006
• Semi-continuous observational data for atmospheric CO₂ and CH₄ mixing ratios at Azovo, DOI:10.17595/20231117.007
• Semi-continuous observational data for atmospheric CO₂ and CH₄ mixing ratios at Vaganovo, DOI:10.17595/20231117.008
• Semi-continuous observational data for atmospheric CO₂ and CH₄ mixing ratios at Yakutsk, DOI:10.17595/20231117.009

The additional Data of the following dataset are released.

• 1000-member ensemble simulation output from NIES Chemistry-Climate Models for investigating Southern Hemisphere Stratospheric response to the sea surface temperature, DOI:10.17595/20221215.001

A dataset is released.

• Global map of the dry deposition velocity of atmospheric hydrogen on the land surface, DOI:10.17595/20230901.001

A dataset is released.

• O₂/N₂ ratios and CO₂ mole fractions of air samples collected at Cape Ochiishi, DOI:10.17595/20230830.001
• O₂/N₂ ratios and CO₂ mole fractions of air samples collected at Hateruma Island, DOI:10.17595/20230830.002
• O₂/N₂ ratios and CO₂ mole fractions of air samples collected on Minamitorishima, DOI:10.17595/20230830.003
• O₂/N₂ ratios and CO₂ mole fractions of air samples collected onbaord cargo ships sailing in the Pacific region, DOI:10.17595/20230830.004

The additional Data of the following dataset are released.

• Atmospheric CO₂ mole fraction data of CONTRAIL-CME, DOI:10.17595/20180208.001
• Atmospheric trace gas data from the CONTRAIL flask air sampling over the Pacific Ocean, DOI:10.17595/20190828.001
• Atmospheric trace gas data from the CONTRAIL flask air sampling over the Eurasian continent, DOI:10.17595/20190828.002
• Atmospheric CO₂ mole fraction data of CONTRAIL-CME (most recent data), DOI:10.17595/20210827.001
• Atmospheric trace gas data from the CONTRAIL flask air sampling over the Pacific Ocean (the most recent data), DOI:10.17595/20220722.001
• Atmospheric trace gas data from the CONTRAIL flask air sampling, DOI:10.17595/20230725.001
• Atmospheric trace gas data from the CONTRAIL flask air sampling (the most recent data), DOI:10.17595/20230725.002

The latest version (ver.2023.0) of the following dataset is released.

• NIES-ML3 ensemble product of surface ocean CO₂ concentrations and air-sea CO₂ fluxes reconstructed by using three machine learning models with new CO₂ trends, DOI:10.17595/20220311.001

A dataset is released.

• GEOS-Chem model output for surface atmospheric compositions over East Asia, DOI:10.17595/20230707.001

The additional Data of the following dataset are released.

• Continuous Observational Data of Atmospheric CO₂ Mixing Ratios on Hateruma Island, DOI:10.17595/20160901.001
• Continuous Observational Data of Atmospheric CO₂ Mixing Ratios at Cape Ochiishi, DOI:10.17595/20160901.002
• Continuous Observational Data of Atmospheric CH₄ Mixing Ratios on Hateruma Island, DOI:10.17595/20160901.003
• Continuous Observational Data of Atmospheric CH₄ Mixing Ratios at Cape Ochiishi, DOI:10.17595/20160901.004

The latest version (ODIAC2022) of the following dataset is released.

• ODIAC Fossil Fuel CO₂ Emissions Dataset, DOI:10.17595/20170411.001

Datasets are released.

• Atmospheric carbon dioxide monitoring using volunteer observing ship (TRANS HARMONY 1) servicing between Japan and Southeast Asia, DOI:10.17595/20230425.001

The additional Data of the following dataset are released.

• Bias corrected climate scenarios over Japan based on NHRCM02 using monthly CDFDM, DOI:10.17595/20220415.001

A dataset is released.

• Trace gas measurements at Hateruma station in 2018, DOI:10.17595/20230217.001

The latest version (Ver.1.4 / Ver.1.3) of the following datasets are released.

• Continuous Observational Data of Atmospheric CO₂ Mixing Ratios on Hateruma Island, DOI:10.17595/20161901.001
• Continuous Observational Data of Atmospheric CH₄ Mixing Ratios on Hateruma Island, DOI:10.17595/20161901.003

A dataset is released.

• Global Biomass Burning Emissions Inventory (GBEI), DOI:10.17595/20230124.001

The latest version (Ver.2022.1) of the following dataset is released.

• Long-term global CO₂ fluxes estimated by NICAM-based Inverse Simulation for Monitoring CO₂ (NISMON-CO₂), DOI:10.17595/20201127.001

A dataset is released.

• 1000-member ensemble simulation output from NIES Chemistry-Climate Models for investigating Southern Hemisphere Stratospheric response to the sea surface temperature, DOI:10.17595/20221215.001

The latest version (Ver.2.0) of the following dataset is released.

• Daily Observational Data of Atmospheric CO₂ Mixing Ratios at the Summit of Mt. Fuji, DOI:10.17595/20170616.001

A dataset is released.

• 500-member ensemble simulation output from NIES Chemistry-Climate Models for investigating total ozone dependence on ODS and GHG concentrations, DOI:10.17595/20221109.001

A dataset is released.

• Micrometeorological CO₂ Flux Data at Teshio CC-LaG Experiment site (TSE), DOI:10.17595/20221006.001

A dataset is released.

• In situ ship and aircraft observation-based column-averaged mixing ratios of CO₂ (obs. XCO₂) over the Western Pacific Ocean, DOI:10.17595/20220805.001

A dataset is released.

• Atmospheric trace gas data from the CONTRAIL flask air sampling over the Pacific Ocean (the most recent data), DOI:10.17595/20220722.001

Website is renewed.

• This site is renewed to be more user friendly by improving the overall site design and menu, as well as adding explanations to the Analysis Tools.
  In addition, a search function of the Dataset List and the Analysis Tools are improved, and new parameters are added to the Real-Time Data.

The latest version (Ver.1.1) of the following dataset is released.

• Bias corrected climate scenarios over Japan based on CDFDM method using CMIP6 (NIES2020), DOI:10.17595/20210501.001

The latest version (ver.2022.1) of the following dataset is released.

• Data based estimate of global ocean CO₂ flux, DOI:10.17595/20210806.001

The latest version (ver.2022.1.0) of the following datasets are released.

• Atmospheric CO₂ mole fraction data of CONTRAIL-CME, DOI:10.17595/20180208.001
• Atmospheric CO₂ mole fraction data of CONTRAIL-CME (most recent data), DOI:10.17595/20210827.001
• Atmospheric trace gas data from the CONTRAIL flask air sampling over the Eurasian continent, DOI:10.17595/20190828.002

The latest version (ver.2022.2) of the following dataset is released.

• NIES-ML3 ensemble product of surface ocean CO₂ concentrations and air-sea CO₂ fluxes reconstructed by using three machine learning models with new CO₂ trends, DOI:10.17595/20220311.001

The latest version (ver.2022.1) of the following dataset is released.

• NIES-ML3 ensemble product of surface ocean CO₂ concentrations and air-sea CO₂ fluxes reconstructed by using three machine learning models with new CO₂ trends, DOI:10.17595/20220311.001

A dataset is released.

• Bias corrected climate scenarios over Japan based on NHRCM02 using monthly CDFDM, DOI:10.17595/20220415.001

The latest version (ver.2021-1.1) of the following dataset is released.

• Observational Data of Atmospheric O₃ Mixing Ratios at Mt. Happo Observatory, DOI:10.17595/20210709.001

A dataset is released.

• NIES-ML3 ensemble product of surface ocean CO₂ concentrations and air-sea CO₂ fluxes reconstructed by using three machine learning models with new CO₂ trends, DOI:10.17595/20220311.001

Datasets are released.

• Atmospheric Carbon Dioxide Dry Air Mole Fraction at Nainital, India, DOI:10.17595/20220301.001
• Atmospheric Carbon Dioxide Dry Air Mole Fraction at Comilla, Bangladesh, DOI:10.17595/20220301.002
• Atmospheric Methane Dry Air Mole Fraction at Nainital, India, DOI:10.17595/20220301.003
• Atmospheric Methane Dry Air Mole Fraction at Comilla, Bangladesh, DOI:10.17595/20220301.004
• Atmospheric Carbon Monoxide Dry Air Mole Fraction at Nainital, India, DOI:10.17595/20220301.005
• Atmospheric Carbon Monoxide Dry Air Mole Fraction at Comilla, Bangladesh, DOI:10.17595/20220301.006
• Atmospheric Molecular Hydrogen Dry Air Mole Fraction at Nainital, India, DOI:10.17595/20220301.007
• Atmospheric Molecular Hydrogen Dry Air Mole Fraction at Comilla, Bangladesh, DOI:10.17595/20220301.008
• Atmospheric Nitrous Oxide Dry Air Mole Fraction at Nainital, India, DOI:10.17595/20220301.009
• Atmospheric Nitrous Oxide Dry Air Mole Fraction at Comilla, Bangladesh, DOI:10.17595/20220301.010
• Atmospheric Sulfur Hexafluoride Dry Air Mole Fraction at Nainital, India, DOI:10.17595/20220301.011
• Atmospheric Sulfur Hexafluoride Dry Air Mole Fraction at Comilla, Bangladesh, DOI:10.17595/20220301.012
• Carbon Isotopic Ratio (C13/C12) of Carbon Dioxide at Nainital, India, DOI:10.17595/20220301.013
• Carbon Isotopic Ratio (C13/C12) of Carbon Dioxide at Comilla, Bangladesh, DOI:10.17595/20220301.014
• Oxygen Isotopic Ratio (O18/O16) of Carbon Dioxide at Nainital, India, DOI:10.17595/20220301.015
• Oxygen Isotopic Ratio (O18/O16) of Carbon Dioxide at Comillal, Bangladesh, DOI:10.17595/20220301.016

The latest version (ver.2021.1) of the following dataset is released.

• Long-term global CO₂ fluxes estimated by NICAM-based Inverse Simulation for Monitoring CO₂ (NISMON-CO₂), DOI:10.17595/20201127.001

The following datasets are released, with data up to September 2021.

• Continuous Observational Data of Atmospheric CO₂ Mixing Ratios on Hateruma Island, DOI:10.17595/20160901.001
• Continuous Observational Data of Atmospheric CH₄ Mixing Ratios on Hateruma Island, DOI:10.17595/20160901.003

The footprint analysis at Hateruma station is extended to August 2020.

Datasets are released.

• Atmospheric CO₂ mole fraction data of CONTRAIL-CME (most recent data), DOI:10.17595/20210827.001
• Atmospheric trace gas data from the CONTRAIL flask air sampling over the Eurasian continent (most recent data), DOI:10.17595/20210827.002

Datasets are released.

• Data based estimate of global ocean CO₂ flux, DOI:10.17595/20210806.001
• 100-member ensemble simulation output from NIES Chemistry-Climate Models to investigate the effect of unregulated HFC increase on the ozone layer, DOI:10.17595/20210806.002

A dataset is released.

• Micrometeorological CO₂ Flux Data at Fuji Hokuroku Flux Research Site (FHK), DOI:10.17595/20210730.001

A dataset is released.

• Observational Data of Atmospheric O₃ Mixing Ratios at Mt. Happo Observatory, DOI:10.17595/20210709.001

The latest version (ver.2021.1.0) of the following datasets is released.

• Atmospheric CO₂ mole fraction data by aircraft (CONTRAIL-CME), DOI:10.17595/20180208.001
• Atmospheric trace gas data from the CONTRAIL flask air sampling over the Pacific Ocean, DOI:10.17595/20190828.001
• Atmospheric trace gas data from the CONTRAIL flask air sampling over the Eurasian continent, DOI:10.17595/20190828.002

The latest version (ODIAC2020b) of the following dataset is released.

• ODIAC Fossil Fuel CO₂ Emissions Dataset, DOI:10.17595/20170411.001

A dataset is released.

• Micrometeorological CO₂ Flux Data at Tomakomai Flux Research Site (TMK), DOI:10.17595/20210611.001

A dataset is released.

• Output data of greenhouse gas budget and carbon cycle simulated by the VISIT terrestrial ecosystem model, DOI:10.17595/20210521.001

The latest version (Ver.202005) of the following dataset is released.

• Bias corrected climate scenarios over Japan based on CDFDM method using CMIP5 (NIES2019), DOI:10.17595/20200415.001

Datasets are released.

• Atmospheric CO₂ mole fraction data observed at Yoyogi, Tokyo by NIES, DOI:10.17595/20210510.001
• Atmospheric CO mole fraction data observed at Yoyogi, Tokyo, DOI:10.17595/20210510.002
• Atmospheric CO₂ mole fraction data observed at Yoyogi, Tokyo by AIST, DOI:10.17595/20210510.003
• Atmospheric O₂ mole fraction data observed at Yoyogi, Tokyo, DOI:10.17595/20210510.004
• Atmospheric CO₂ flux data observed at Yoyogi, Tokyo, DOI:10.17595/20210510.005

A dataset is released.

• Bias corrected climate scenarios over Japan based on CDFDM method using CMIP6 (NIES2020), DOI:10.17595/20210501.001

A dataset is released.

• Fossil-fuel CO₂ emission estimates at 1x1 km in Tokyo, DOI:10.17595/20210129.001

The latest version (ODIAC2020) of the following dataset is released.

• ODIAC Fossil Fuel CO₂ Emissions Dataset, DOI:10.17595/20170411.001

A dataset is released.

• Long-term global CO₂ fluxes estimated by NICAM-based Inverse Simulation for Monitoring CO₂ (NISMON-CO₂), DOI:10.17595/20201127.001

A dataset is released.

• Global surface ocean CO₂ concentration and uptake estimated using a neural network, DOI:10.17595/20201020.001

The following datasets are released, with data up to April 2020.

• Continuous Observational Data of Atmospheric CO₂ Mixing Ratios on Hateruma Island, DOI:10.17595/20160901.001
• Continuous Observational Data of Atmospheric CH₄ Mixing Ratios on Hateruma Island, DOI:10.17595/20160901.003

The latest version (ver.2020.1.0) of the datasets is released.

• Atmospheric CO₂ mole fraction data by aircraft (CONTRAIL-CME), DOI:10.17595/20180208.001
• Atmospheric trace gas data from the CONTRAIL flask air sampling over the Eurasian continent, DOI:10.17595/20190828.002

A dataset is released.

• Bias corrected climate scenarios over Japan based on CDFDM method using CMIP5 (NIES2019), DOI:10.17595/20200415.001

A dataset is released.

• A Data-driven Upscale Product of Global Gross Primary Production, Net Ecosystem Exchange and Ecosystem Respiration, DOI:10.17595/20200227.001

The latest version (ODIAC2019) of the following dataset is released.

• ODIAC Fossil Fuel CO₂ Emissions Dataset, DOI:10.17595/20170411.001

The latest version (Ver.1.1) of the following dataset is released.

• Daily Observational Data of Atmospheric CO₂ Mixing Ratios at the Summit of Mt. Fuji, DOI:10.17595/20170616.001

Datasets are released.

• Atmospheric Profiles and Total Columns of O₃, HNO₃, and HCl Measured by Fourier Transform Infrared Spectrometer (FTIR) at Antarctic Syowa Station in 2007, DOI:10.17595/20190911.001
• Atmospheric Profiles and Total Columns of O₃, HNO₃, and HCl Measured by Fourier Transform Infrared Spectrometer (FTIR) at Antarctic Syowa Station in 2011, DOI:10.17595/20190911.002

Datasets are released.

• Atmospheric trace gas data from the CONTRAIL flask air sampling over the Pacific Ocean, DOI:10.17595/20190828.001
• Atmospheric trace gas data from the CONTRAIL flask air sampling over the Eurasian continent, DOI:10.17595/20190828.002

Recent data of "Monitoring of Greenhouse Gases by Tower over Siberia" are released from the Dataset List.

The latest version (ver.2019.1.0) of the following dataset is released.

• Atmospheric CO₂ mole fraction data by aircraft (CONTRAIL-CME), DOI:10.17595/20180208.001

The latest version (ODIAC2018) of the following dataset is released.

• ODIAC Fossil Fuel CO₂ Emissions Dataset, DOI:10.17595/20170411.001

Datasets are released.

• Improved Limb Atmospheric Spectrometer (ILAS), Version 6.1, DOI:10.17595/20180628.001
• Improved Limb Atmospheric Spectrometer (ILAS), Version 8.0, DOI:10.17595/20180628.002
• Improved Limb Atmospheric Spectrometer-II (ILAS-II), Version 2, DOI:10.17595/20180628.003
• Improved Limb Atmospheric Spectrometer-II (ILAS-II), Version 3.0, DOI:10.17595/20180628.004

A new website "Asia-Pacific Monitoring Sites" is open.

A dataset is released.

• Atmospheric CO₂ mole fraction data by aircraft (CONTRAIL-CME), DOI:10.17595/20180208.001

A dataset is released.

• Daily observational data of atmospheric CO₂ mixing ratios at the summit of Mt. Fuji, DOI:10.17595/20170616.001

DOI is minted for the following dataset on the website "ODIAC Fossil Fuel Emission Dataset".

• ODIAC Fossil Fuel CO₂ Emissions Dataset, DOI:10.17595/20170411.001

The website "Information on Vitamin D Synthesis / Erythemal UV" is updated.
5 monitoring stations are added, i.e., Sapporo (Hokkaido), Yokohama (Kanagawa), Nagoya (Aichi), Ootsu (Shiga), and Miyazaki (Miyazaki).

DOIs are minted for the following datasets in the Dataset List.

• Continuous Observational Data of Atmospheric N₂O Mixing Ratios on Hateruma Island, DOI:10.17595/20170113.001
• Continuous Observational Data of Atmospheric N₂O Mixing Ratios at Cape Ochiishi, DOI:10.17595/20170113.002

DOIs* are minted for the following datasets in the Dataset List.

• Continuous Observational Data of Atmospheric CO₂ Mixing Ratios on Hateruma Island, DOI:10.17595/20160901.001
• Continuous Observational Data of Atmospheric CO₂ Mixing Ratios at Cape Ochiishi, DOI:10.17595/20160901.002
• Continuous Observational Data of Atmospheric CH₄ Mixing Ratios on Hateruma Island, DOI:10.17595/20160901.003
• Continuous Observational Data of Atmospheric CH₄ Mixing Ratios at Cape Ochiishi, DOI:10.17595/20160901.004

(*) DOI (Digital Object Identifier):
A digital object identifier DOI is used to permanently identify an object such as an electronic document. The DOI provides more stable linking than a URL, because if the document's URL changes, the DOI metadata is updated to link to the new URL.
NIES is able to mint DOIs via JaLC of which we became a member since 2016.

A new website "LUIS (Land Use Information System) Web" is open. It displays the historical changes in land use in Japan between 1850-1985 (in Japanese).

The GED user registration system is updated with new functions (resetting of password, updating of user information, and unregistering).

The website "Monitoring of Global Warming Effects (Alpine Zone-Central Japan, Hokkaido)" is renewed (in Japanese).

A new website "ODIAC Fossil Fuel Emission Dataset" is open.

A new website "Information on Vitamin D Synthesis / Erythemal UV" is open. It provides real time data at five Japanese sites.

A new database "GED" (Global Environmental Database) is released. The portal site of databases, GED and "GGTU" (Greenhouse Gases Trend Update), is integrated for user's convinience.

The portal site for global environmental databases is repaired. New features, such as data search, are added.