データセットの引用情報:
このデータを利用する場合は、データパッケージを引用してください:
Murayama S.
CO2 concentration data, AsiaFlux TKY site, 1993-present, Takayama, Japan; CO2濃度データ アジアフラックスTKYサイト,高山(たかやま)
JaLTER-takayama-01.23.5 (http://db.cger.nies.go.jp/JaLTER/metacat/metacat/JaLTER-takayama-01.23.5/jalter)
全体的な情報:
タイトル:CO2 concentration data, AsiaFlux TKY site, 1993-present, Takayama, Japan; CO2濃度データ アジアフラックスTKYサイト,高山(たかやま)
識別子:JaLTER-takayama-01.23.5
要旨:
CO2 concentration data in a deciduous broadleaf forest, AsiaFlux TKY site, Japan. The data has been measured continuously at flux tower.落葉広葉樹林のフラックス観測タワーにおけるCO2濃度の連続計測データ。
キーワード:
  • CO2
  • concentration
  • WDCGG
  • tower
  • 二酸化炭素
  • 濃度
  • タワー

関係者/関係団体

データセットの所有者:
個人: Shohei Murayama
組織/団体:Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST)
住所:
AIST Tsukuba West, 16-1 Onogawa,
Tsukuba, Ibaraki 305-8569 Japan
電話:
+81-29-861-8366 (voice)
電話:
+81-29-861-8358 (fax)
メールアドレス:
s.murayama (at) aist.go.jp
データセットの連絡先:
個人: Shohei Murayama
組織/団体:Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST)
住所:
AIST Tsukuba West, 16-1 Onogawa,
Tsukuba, Ibaraki 305-8569 Japan
電話:
+81-29-861-8366 (voice)
電話:
+81-29-861-8358 (fax)
メールアドレス:
s.murayama (at) aist.go.jp

データセットの特性

期間:
開始:
1993
終了:
2009

サンプリング、処理工程、品質管理の方法

処理の手順
手順 1:
説明:
-

CO2 concentration

The observation site is located in a cool-temperate deciduous forest in a mountainous area in the central part of the main island of Japan and is situated about 15 km east of Takayama City. The main tree species at the site are deciduous broad-leaved trees such as birch and oak, whose average height is about 17 m. The ground surface is covered with bamboo grass. This forest has been protected for at least 50 years. Budding and defoliation occur in May and October, respectively,and the ground surface is usually covered with snow from December to April.

使用機器: Beckman Industrial, LI-COR inc. Model 880 (Beckman) or LI-6252 (LI-COR)
サンプリングの領域と頻度:
Air intakes are mounted at the following heights on a 27-m tower: September 1993 to March 1999: 27, 18, 8.8 and 5.8 m above the ground (the top level is above the canopy, the second just above the canopy, and the lowest two inside the canopy). March 1999 to May 2003: 27, 18, 8.8 and 2.0 m above the ground. May 2003 to August 2003: 27, 18, 8.8 and 3.0 m above the ground. August 2003 to January 2004: 27, 18, 8.8, 5.8, 3.0 and 1.3 m above the ground. January 2004-: 27, 18, 8.8, 5.8, 2.0 and 1.3 m above the ground. The air is drawn by a diaphragm pump and introduced into an NDIR CO2 analyzer after removing aerosols and water vapor.
サンプリングの説明:

データセットの利用条件

Data Availability: 1993-2006 on WDCGG Database. Data policy: Please refer to the WDCGG web site (URL:http://gaw.kishou.go.jp/wdcgg/wdcgg.html)
アクセス制御:
認証システム:knb
適用順序:denyFirst
メタデータのダウンロード: Ecological Metadata Language (EML) ファイル