Study sites: Toolik Lake Field Station Alaska, USA 68.63 N, 149.57 W; Atqasuk, Alaska USA 70.45 N, 157.40 W; Barrow, Alaska, USA 71.30 N, 156.67 W; Latnjajaure, Sweden 68.35 N, 18.50 E; Falls Creek, Australia: Site 2-unburned 36.90 S 147.29 E; Site 3-burned 36.89 S 147.28 E. Additional sites will be added summer 2008, but the exact sites are not finalized. Purpose: Collect soil CO2 for analysis of radiocarbon to evaluate the age of the carbon respired in controls and warmed plots from across the ITEX network. Treatments: control and ITEX OTC warming experiment (1994-2007). Design: 5 replicates of each treatment at dry site and moist site. Sampling frequency: Once per peak season.

• Metadata link
• 14c_of_soil_co2_from_ipy_itex_cross_site_comparison

SCIOPS Short Name: 14c_of_soil_co2_from_ipy_itex_cross_site_comparison Version ID: Not provided Unique ID: C1214602443-SCIOPS

This work presents results from a short firn core spanning 15 years collected from near Mount Brown, Wilhelm II Land, East Antarctica. Variations of methanesulphonic acid (MSA) at Mount Brown were positively correlated with sea-ice extent from the coastal region surrounding Mount Brown (60-1208 E) and from around the entire Antarctic coast (0-3608 E). Previous results from Law Dome identified this MSA-sea-ice relationship and proposed it as an Antarctic sea-ice proxy (Curran and others, 2003), with the strongest results found for the local Law Dome region. Our data provide supporting evidence for the Law Dome proxy (at another site in East Antarctica), but a deeper Mount Brown ice core is required to confirm the sea-ice decline suggested by Curran and others (2003). Results also indicate that this deeper record may also provide a more circum-Antarctic sea-ice proxy. This work was completed as part of ASAC project 757 (ASAC_757).

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• undefined
• Metadata link
• mbs_wilhelm_msa_hooh

AU_AADC Short Name: mbs_wilhelm_msa_hooh Version ID: 1 Unique ID: C1214313640-AU_AADC

Aerial photographs taken by NOAA's National Geodetic Survey during 1988 were mosaicked and orthorectified by the Biogeography Branch. The resulting image was used to digitize benthic, land cover and mangrove habitat maps of the Salt River Bay National Historic Park and Ecological Preserve (National Park Service), on St. Croix, in the U.S. Virgin Islands.The mosaic is centered on the National Park Service Site, located on the north central coast of St. Croix, and extends beyond the park boundaries approximately 0.5 - 4.0 km.

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NOAA_NCEI Short Name: 39480 Version ID: Not Applicable Unique ID: C2102656753-NOAA_NCEI

Habitat maps were created as part of a larger ecological assessment conducted by NOAA's National Ocean Service (NOS), Biogeography Branch, for Salt River Bay National Historic Park and Ecological Preserve (National Park Service).Aerial photographs were obtained for 1988 from the National Geodetic Survey, and were orthorectified by the Biogeography Branch. A classification scheme was set up with 20 benthic habitat types, 19 land cover types, and 13 mangrove habitat types. For this map of seagrass and mangrove habitats during 1988 only the 3 seagrass, and 14 mangrove classification categories were used. These were mapped directly into a GIS system through visual interpretation of orthorectified aerial photographs.

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NOAA_NCEI Short Name: 39481 Version ID: Not Applicable Unique ID: C2102656462-NOAA_NCEI

This experiment was part of an ONR (Office of Naval Research) sponsored effort to look at seismic noise propogating under an ice sheet. A set of 1 Hz and a set of 5 second seismometers were recorded on an ice sheet in the Beaufort Sea in early March, 1990 while a second set of 1 Hz seismometers was recorded onshore at Deadhorse, Alaska. Continuous data at 8 sps were recorded for a period of approximately two weeks.

• Data link
• undefined
• PASSCAL_BASIC

SCIOPS Short Name: PASSCAL_BASIC Version ID: Not provided Unique ID: C1214610601-SCIOPS