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1. Global Lake and River Ice Phenology Database [G01377]
The Global Lake and River Ice Phenology Database contains freeze and thaw/breakup dates as well as other descriptive ice cover data for 865 lakes and rivers in the Northern Hemisphere. Of the 542 ...


2. Morphometric Characteristics of Ice and Snow in the Arctic Basin: Aircraft Landing Observations from the Former Soviet Union, 1928-1989 [G02140]
This data set contains sea ice and snow measurements collected during aircraft landings associated with the Soviet Union's historical Sever airborne and North Pole drifting station programs. The High-Latitude ...


3. GPM Ground Validation Autonomous Parsivel Unit (APU) NSSTC [gpmpansstc]
The Autonomous Parsivel Unit (APU) is an optical disdrometer based on single particle extinction that measures particle size and fall velocity. This APU consists of the Parsivel, which was developed ...


4. GPM Ground Validation Joss-Waldvogel Disdrometer (JW) NSSTC [gpmjwnsstc]
The Joss-Waldvogel (JW) disdrometer is an impact-type electromechanical counter designed to measure the drop size distribution (DSD). This dataset provides rainfall data for the Global Precipitation ...


5. GPM Ground Validation Two-Dimensional Video Disdrometer (2DVD) NSSTC [gpm2dnsstc]
The Two-dimensional Video Disdrometer (2DVD) uses two high speed line scan cameras which provide continuous measurements of size distribution, shape and fall velocities of all precipitation particles ...


6. Arctic Sea Ice Concentration and Extent from Danish Meteorological Institute Sea Ice Charts, 1901-1956 [G10007]
This data set provides estimates of Arctic sea ice extent and concentration from 1901 to 1956 created from a collection of historic, hand-drawn sea ice charts from the Danish Meteorological Institute ...


7. Glacier Mass Balance and Regime Measurements and Analysis, 1945-2003 [G10002]
This data set consists of glacier regime parameters observed between 1945 and 2003. Data include annual mass balances, ablation, accumulation, and equilibrium-line altitude of mountain and subpolar ...


8. Greenland Snow Pit and Core Stratigraphy (Analog and Digital Formats) [G10004]
This data set is comprised of scientific field study notebooks from geologist Carl S. Benson describing his traverses of Greenland from 1952 to 1955. The notebooks contain data on Greenland snow accumulation, ...


9. An Assessment of Exotic Plant Species of Rocky Mountain National Park [usgsbrdnpwrcd0000001]
The invasion of exotic plants is becoming a problem in many ecosystems including some areas in Rocky Mountain National Park (RMNP) (Rocky Mountain National Park Resource Management Reports #1 and ...


10. Barnes Ice Cap South Dome Trilateration Net Survey Data 1970-1984 [G02178]
The Barnes Ice Cap data set contains survey measurements of a network of 43 stakes along a 10 km flow line on the northeast flank of the south dome of the Barnes Ice Cap. The measurements are of mass ...


11. Central Asia Temperature and Precipitation Data, 1879-2003 [G02174]
This data set updates and expands the NOAA Global Historical Climate Network (GHCN) of quality controlled meteorological records, focusing on the Northern Tien Shan and Pamir Mountain Ranges of Central ...


12. Changes in Breeding Bird Populations in North Dakota: 1967 to 1992-93. [usgsbrdnpwrcd00000012]
Breeding bird populations in North Dakota were compared using surveys conducted in 1967 and 1992-93. In decreasing order, the five most frequently occurring species were Horned Lark (Eremophia alpestris), ...


13. Collecting and Analyzing Data from Duck Nesting Studies [usgsbrdnpwrcs0000004]
Northern Prairie has a long history of studying nest success of upland nesting ducks. Over the years, we have developed standardized procedures for collecting and analyzing these types of data. Data ...


14. Dust Count Observations March 1933 - August 1933 in College-Fairbanks, AK [G02199]
These data are daily dust count observations taken in College-Fairbanks, Alaska from 23 March 1933 to 29 August 1933. The data are part of a larger collection titled "Second International Polar Year ...


15. Ecological Effects of Fire Retardant Chemicals and Fire Suppressant Foams [usgsbrdnpwrcd00000002]
Laboratory studies with algae, aquatic invertebrates, and fish. Short-term toxicity tests showed that both fire-retardant and foam-suppressant chemicals were very toxic to aquatic organisms including ...


16. Good Days on the Trail, 1938-1942: Film Footage of the Rocky Mountains, Colorado [G02175]
This film documents student hiking trips conducted by the University of Colorado at Boulder in the Rocky Mountains, Colorado, USA during the summers of 1938-1942. The hikes took place in various ...


17. Human Disturbances of Waterfowl: An Annotated Bibliography. [usgsbrdnpwrcd0000003]
The expansion of outdoor recreational activities has increased greatly the interaction between the public and waterfowl and waterfowl habitat. The effects of these interactions on waterfowl habitats ...


18. International Polar Year Historical Data and Literature [G02201]
The International Polar Year Historical Data and Literature collection (formerly known as the Discovery and Access of Historic Literature from the IPYs (DAHLI) project) is an online data collection ...


19. Meteorological Data from the Russian Arctic, 1961-2000 [G02141]
This data set contains monthly means of meteorological observation data from Russian stations from 1961-2000 (for most stations). The Russian station observations were provided by Vladimir Radionov, ...


20. Monthly Mean Precipitation Sums at Russian Arctic Stations, 1966-1990 [G02170]
This data set contains monthly mean precipitation sums from Russian arctic stations. Precipitation measurements were acquired using a Tretyakov precipitation gauge. Data have not been adjusted for ...


21. Timing and Statistics of Autumn and Spring Annual Snow Cover for the Northern Hemisphere [G02168]
The National Snow and Ice Data Center hosts a time-series data set comprising annual snow cover data for the Northern Hemisphere (covering land primarily over 45 degrees North) from 1972 to 2000. ...


22. Central Asian Snow Cover from Hydrometeorological Surveys [G01171]
The Central Asian Snow Cover from Hydrometeorological Surveys data are based on observations made by personnel for three river basins: Amu Darya, Sir Darya, and Naryn. These observations include end ...


23. Former Soviet Union Hydrological Snow Surveys, 1966-1996 [G01170]
The Former Soviet Union Hydrological Snow Surveys are based on observations made by personnel at 1,345 sites throughout the Former Soviet Union between 1966 and 1990, and over 200 of those sites between ...


24. Glacier Photograph Collection [G00472]
The National Snow and Ice Data Center (NSIDC) in Boulder, Colorado houses many photographic prints of glaciers, taken both from the air and from the ground. These photographs constitute an important ...


25. NOAA/NMC/CAC Arctic and Antarctic Monthly Sea Ice Extent, 1973-1990 [G00917]
Sea ice extent from January 1973 through August 1990 was digitized from weekly operational sea ice charts produced by the Navy/NOAA Joint Ice Center. Charts were digitized by hand using a 1 degree ...


26. Sea Ice Melt Pond Data from the Canadian Arctic [G01169]
This data set contains observations of albedo, depth, and physical characteristics of melt ponds on sea ice, taken during the summer of 1994. The melt ponds studied were located just south of Cornwallis ...


27. Snowfall and Snow Depth for Canada 1943-1982 [G00922]
Data include monthly snowfall and end-of-month snow depth for 140 stations across Canada. Stations that maintained at least 20 years of data were chosen. The original data are from Atmospheric Environment ...


28. Western Italian Alps Monthly Snowfall and Snow Cover Duration [G01186]
This data set consists of snow observations for 18 stations in the western Italian Alps. Two types of data are included: monthly snowfall amounts and monthly snow cover duration in days. The period ...


29. Sea Ice in the Belcher Islands, Nunavut, Canada [ELOKA002]
This data set contains interviews of three hunters from Sanikiliaq, Belcher Islands, in the territory of Nunavut, Canada. The hunters describe their observations of sea ice conditions around the ...


30. Silalirijiit Project: Kangiqtugaapik (Clyde River), Nunavut, Canada, Weather Station Network [ELOKA019]
The Kangiqtugaapik (Clyde River), Nunavut, Canada, Weather Station Network is a collection of weather station data from the locations of Akuliaqattak, Silasiutitalik, and Ailaktalik in the Clyde River ...


31. Summary Report of Community-Based Environmental and Species Observations from the Bering Sea Sub-Network, 2008-2009 [ELOKA028]
The Bering Sea Sub-Network (BSSN) is comprised of a set of coastal communities representing six indigenous cultures: three in the Russian Federation and three in the United States. The objective of ...


32. Survey Data of Community-Based Environmental and Species Observations from the Bering Sea Sub-Network, 2008-2009 [ELOKA029]
The Bering Sea Sub-Network (BSSN) is comprised of a set of coastal communities representing six indigenous cultures: three in the Russian Federation and three in the United States. The objective of ...


33. The Seasonal Ice Zone Observing Network (SIZONet) Local Observations Interface [ELOKA031]
The Seasonal Ice Zone Observing Network Local Observations Interface allows access to observations of sea ice, weather, and wildlife collected since 2006 by Indigenous Inupiaq and Yup'ik sea ice experts ...


34. Audubon Christmas Bird Counts [brdpwrc0006]
Audubon link: "http://www.audubon.org/" The first Christmas Bird Counts (CBCs) were conducted in 1900 in response to a suggestion made in the National Audubon Society's magazine Bird-Lore. Twenty-seven ...


35. Biomass Burning 5x5 degree data in Native Format [BIO_BURN_5X5_HAO_NAT]
The BIO_MASS_5X5_HAO_NAT data set contains data representing the geographical and temporal distribution of total amount of biomass burned. The data were collected by Dr. Wei Min Hao and Mei-Huey Liu ...


36. Cascadia Tsunami Deposit Database [USGS_OFR-03-13]
Abstract The Cascadia Tsunami Deposit Database contains data on the location and sedimentological properties of tsunami deposits found along the Cascadia margin. Data have been compiled from 52 studies, ...


37. DISCOVER-AQ Ground-based Lidar Aerosol Measurements [DISCOVER-AQ_Ground_Remote_Sensing_Aerosol]   PARENT DIF
DISCOVER-AQ_Ground_Remote_Sensing_Aerosol_Data are ground-based lidar measurements of extinction, backscattering profiles and aerosol optical depth (AOD) at University of Maryland, Baltimore County ...


38. DISCOVER-AQ Ground-based PANDORA Trace Gas Measurements [DISCOVER-AQ_Ground_Remote_Sensing_TraceGas]   PARENT DIF
DISCOVER-AQ_Ground_Remote_Sensing_TraceGas_Data areground-based PANDORA Network NO2 and O3 column measurements made during the first deployment of the Deriving Information on Surface Conditions from ...


39. DISCOVER-AQ Ground-based in-situ Aerosol Measurements [DISCOVER-AQ_Ground_insitu_Aerosol]   PARENT DIF
DISCOVER-AQ_Ground_insitu_Aerosol_Data are ground-based in-situ measurements of aerosol properties in University of Maryland, Baltimore County (UMBC) site during the first deployment of the Deriving ...


40. DISCOVER-AQ Ground-based in-situ Trace Gas and UV Measurements [DISCOVER-AQ_Ground_insitu_TraceGas_UV]   PARENT DIF
DISCOVER-AQ_Ground_insitu_TraceGas_UV_Data are ground-based in-situ trace gas and UV measurements at Edgewood Site made during the first deployment of the Deriving Information on Surface Conditions ...


41. DISCOVER-AQ Ozonesonde Measurements [DISCOVER-AQ_Ozonesonde]   PARENT DIF
DISCOVER-AQ_Ozonesonde_Data are ozonesonde vertical profiles measured during the first deployment of the Deriving Information on Surface Conditions from Column and Vertically Resolved Observations ...


42. Deriving Information on Surface Conditions from Column and Vertically Resolved Observations Relevant to Air Quality (DISCOVER-AQ) [DISCOVER-AQ]   CHILD DIFs
Deriving Information on Surface conditions from Column and Vertically Resolved Observations Relevant to Air Quality (DISCOVER-AQ) is a four-year campaign to improve the use of satellites to monitor ...


43. Lidar Atmopheric Sensing Experiment (LASE) Data Obtained During the ARM-FIRE Water Vapor Experiment (AFWEX) [LASE_AFWEX]
LASE_AFWEX data are Lidar Atmospheric Sensing Experiment water vapor and aerosol data measurements taken during ARM-FIRE (Atmospheric Radiation Measurement - First ISCCP (International Satellite Cloud ...


44. SUCCESS Utah Polarization Diversity LIDAR data set [SUCCESS_UTAH_PDL]
The SUCCESS_UTAH_PDL data set contains ground-based measurements made by the University of Utah Polarization Diversity LIDAR at the CART site during the April-May 1996 SUCCESS Mission. SUbsonic aircraft: ...


45. A Missouri Survey for Climbing Milkweed and Pale Gerardia [brdsar0015]
Report Prepared by the Missouri Department of Conservation, Jerry Presley, Director, under Cooperative Agreement No. 14-45-0009-94-1019, with the National Biological Service A Missouri survey for ...


46. An Automated Photo-identification Catalog for Studies of the Life History of the Florida Manatee [usgsbrdfcscsirenia]
Many free-ranging Florida manatees (Trichechus manatus latirostris) are scarred from encounters with boats, entanglement in fishing gear, or fungal infections. A computer-based system, the Manatee ...


47. Determination, Biological Consequences, and Modeling of Sex-Specific Demographic Rates in Declining, Threatened, or Endangered Metapopulations [brdpwrc0053]
Proper management of animal populations requires an understanding of both population dynamics and ecology, and more research that integrates population dynamics and ecological studies is needed to ...


48. Foraging Ecology and Post-Breeding Dispersal of the Xantus' Murrelet in the Southern California Bight [brdwerc003]
The Xantus' Murrelet is one of the rarest seabirds in the world with a population of less than 10,000 breeding individuals. It is distributed in a restricted area from the Channel Islands of southern ...


49. National Wetlands Inventory (NWI), DOI/USFWS [NWI]
The Intergovernmental Panel on Climate Change (IPCC 2008) identified wetlands as the most vulnerable landscape feature affected by climate change. The National Wetlands Inventory (NWI), established ...


50. Comparison of the Sedimentary Record of Fire with the Tree-Ring Record Within and Near Giant Sequoia Groves, Sierra Nevada, California [brdwerc0002]
The larger Sierra Nevada Global Change Research Program (SNGCRP) seeks to understand past, present, and possible future changes in Sierran forest structure, composition, and dynamics resulting from ...


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