147,196 Works

AmeriFlux Radiological and Meteorological Data for Rosemount G21 Conventional Management Corn Soybean Rotation Site

Oak Ridge National Laboratory Environmental Sciences Division

AmeriFlux Radiological and Meteorological Data for Rosemount G19 Alternative Management Corn Soybean Rotation Site

Oak Ridge National Laboratory Environmental Sciences Division

AmeriFlux Radiological and Meteorological Data for Southern California Climate Gradient Oak Pine Forest Site

Oak Ridge National Laboratory Environmental Sciences Division

AmeriFlux Radiological and Meteorological Data for Southern California Climate Gradient Pinyon Juniper Woodland Site

Oak Ridge National Laboratory Environmental Sciences Division

AmeriFlux Radiological and Meteorological Data for Rayonier Site

Oak Ridge National Laboratory Environmental Sciences Division

AmeriFlux Radiological and Meteorological Data for Santa Rita Creosote Site

Oak Ridge National Laboratory Environmental Sciences Division

Ameriflux Biological Data Template for UMBS Site

Oak Ridge National Laboratory Environmental Sciences Division

AmeriFlux Radiological and Meteorological Data for UPad Site

Oak Ridge National Laboratory Environmental Sciences Division

AmeriFlux Radiological and Meteorological Data for Wisconsin Mature Hardwood Site

Oak Ridge National Laboratory Environmental Sciences Division

Atmospheric Delta14C Record from Wellington (1954-1993)

M Manning & W. Melhuish
Trays containing ~2 L of 5 normal NaOH carbonate-free solution are typically exposed for intervals of 1-2 weeks, and the atmospheric CO2 absorbed during that time is recovered by acid evolution. Considerable fractionation occurs during absorption into the NaOH solution, and the standard fractionation correction (Stuiver and Polach 1977) is used to determine a δ 14C value corrected to δ 13C = -25 per mil. Some samples reported here were taken using BaOH solution or...

Carbon-14 Measurements in Atmospheric CO2 from Northern and Southern Hemisphere Sites, 1962-1993 (NDP-057)

Reidar Nydal & Knut Lovseth
In the 1960s, thermonuclear bomb tests released significant pulses of radioactive 14C into the atmosphere. This major perturbation allowed scientists to study the dynamics of the global carbon cycle by measuring and observing rates of isotopic exchange. The Radiological Dating Laboratory at the Norwegian Institute of Technology performed 14C measurements in atmospheric CO2 from 1962 to 1993 at a network of ground stations in the Northern and Southern hemispheres. These measurements were supplemented during 1965...

Global Paleoclimatic Data for 6000 Yr B.P. (1985) (NDP-011)

T. Webb
To determine regional and global climatic variations during the past 6000 years, pollen, lake level, and marine plankton data from 797 stations were compiled to form a global data set. Radiocarbon dating and dated tephras were used to determine the ages of the specimens. The data available for the pollen data are site number, site name, latitude, longitude, elevation, and percentages of various taxa. For lake-level data, the data are site number, site name, latitude,...

U.S. HISTORICAL CLIMATOLOGY NETWORK (USHCN): Daily Temperature\, Precipitation\, and Snow Data

M. Menne, C. Williams & R. Vose
The United States Historical Climatology Network (USHCN) is a high-quality data set of daily and monthly records of basic meteorological variables from 1218 observing stations across the 48 contiguous United States. Daily data include observations of maximum and minimum temperature, precipitation amount, snowfall amount, and snow depth; monthly data consist of monthly-averaged maximum, minimum, and mean temperature and total monthly precipitation. Most of these stations are U.S. Cooperative Observing Network stations located generally in rural...

Kyoto-Related Fossil-Fuel CO2 Emission Totals (1990 - 2009) (Version 2012) (Updated 01/16/2013)

Greg Marland & Thomas Boden
This table shows the total of CO2 emissions from fossil-fuel use and cement manufacture for those countries listed in Annex B of the Kyoto Protocol and for those countries not listed in Annex B. In keeping with the convention of the IPCC methodology for calculating national greenhouse gas emissions, emissions from international bunker fuels (fuels used in international commerce) are not included in the country totals but are shown separately under the country group in...

County-level Estimates for Carbon Distribution in U.S. Croplands, 1990-2005

Tristram West
Net Primary Productivity (NPP) for croplands can be estimated using a statistical method that includes factors for dry weight, harvest indices, and root:shoot ratios multiplied by yield data from the National Agricultural Statistics Service (NASS). This method has been documented and published by Prince et al. (2001), Hicke and Lobell (2004), and Hicke et al. (2004). We expanded this method by including factors for more crops and by using an estimated carbon content of 0.45...

Ameriflux Biological Data Template for Atqasuk Site

Oak Ridge National Laboratory Environmental Sciences Division

AmeriFlux Radiological and Meteorological Data for Cedar Bridge Site

Oak Ridge National Laboratory Environmental Sciences Division

Ameriflux Biological Data Template for Fermi Agriculutural Site

Oak Ridge National Laboratory Environmental Sciences Division

Ameriflux Biological Data Template for Santa Rita Mesquite Savanna Site

Oak Ridge National Laboratory Environmental Sciences Division

Methane, Nonmethane Hydrocarbons, Alkyl Nitrates, and Chlorinated Carbon Compounds including 3 Chlorofluorocarbons (CFC-11, CFC-12, and CFC-113) in Whole-air Samples (April 1979 – December 2012)

Donald Blake
Whole-air samples are collected in conditioned, evacuated, 2-L stainless steel canisters; each canister is filled to ambient pressure over a period of about 1 minute (approximately 20 seconds to 2 minutes). These canisters are returned to the University of California at Irvine for chromatographic analysis.

Atmospheric Methyl Chloride

M. Khalil & R. Rasmussen
This data set provides monthly average concentrations of atmospheric methyl chloride taken from seven locations distributed among the polar, middle, and tropical latitudes of both hemispheres. The seven primary sites include Pt. Barrow, Alaska; Cape Kumukahi and Mauna Loa, Hawaii; Cape Matatula, Samoa; Cape Grim, Tasmania; and the South Pole and Palmer Station, Antarctica. Concentration measurements from these seven sites cover a period of 16 years, extending from 1981-1997. Monthly data taken between 1987-1989 from...

Monthly Atmospheric CO2 Records from Sites in the SIO Air Sampling Network

C. D. Keeling & T. P. Whorf
The air sampling network used by the Scripps Institution of Oceanography (SIO) to determine atmospheric levels of carbon dioxide (CO2) consist of ten sites. Sampling frequency and longevity varies by site. At some sites air samples are collected continuously while at others evacuated glass flasks are used to collect air samples for subsequent analysis at SIO. This database offers monthly and annual CO2 values from ten sites representative of background tropospheric conditions.

Atmospheric CO2 Record from In Situ Measurements at Amsterdam Island (1980-1995)

A. Gaudry, V. Kazan & P. Monfray
Until 1993 air samples were collected continuously through an air intake located at the top of a tower, 9 m above ground and 65 m above mean sea level. Since 1994, the intake has been situated 20 m above ground and 76 m above mean sea level. The tower is located at the north-northwest end of the island on the edge of a 55 m cliff. The air is dried by means of a cryogenic...

Atmospheric CO2 Records from Sites in the Atmospheric Environment Service Air Sampling Network (1975 and 1994)

N. Trivett, V. Hudec & C. Wong
From the mid-1970s through the mid-1990s, air samples were collected for the purposes of monitoring atmospheric CO2 from four sites in the AES air sampling network. Air samples were collected approximately once per week, between 12:00 and 16:00 local time, in a pair of evacuated 2-L thick-wall borosilicate glass flasks. Samples were collected under preferred conditions of wind speed and direction (i.e., upwind of the main station and when winds are strong and steady). The...

Atmospheric Carbon Dioxide Record from Flask Measurements at Lampedusa Island (May 1992- December 2000)

Paolo Chamard, Luigi Ciattaglia, Alcide Di Sarra & Francesco Monteleone
Lampedusa Station rests on a rocky seashore on the eastern tip of Lampedusa Island, located south of Sicily in the central Mediterranean Sea. Air samples at Lampedusa Station are collected each Friday in two pairs of 2-L glass flasks. Flasks are evacuated and then pressurized to 280-300 kPa with ambient air at the sampling site. Determinations of CO2 are made by using a Siemens Ultramat 5E nondispersive infrared gas analyzer. Water vapor is removed during...

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