Northern Hemisphere Snow and Ice Data Records

Size: px

Start display at page:

Download "Northern Hemisphere Snow and Ice Data Records"

Ann Quinn
6 years ago
Views:

1 Northern Hemisphere Snow and Ice Data Records Making Earth Science Data Records for Use in Research Environments (MEaSUREs) PoDAG XXX Oct th, NSIDC

2 MEaSUREs Snow Team David A. Robinson Gina Henderson Thomas Es:low Rutgers University, Piscataway NJ Mark R. Anderson Angela Bliss University of Nebraska, Lincoln NE Dorothy K. Hall Goddard Space Flight Center, Greenbelt MD Thomas L. Mote University of Georgia, Athens GA Chuck Fowler James Maslanik University of Colorado, Boulder CO Sheldon D. Drobot NCAR, Boulder CO

3 Project Goals Assess compliance of current NH snow cover products over land, sea ice and the Greenland ice sheet with NRC Climate Data Record (Earth System Data Record (ESDR)) characterisrcs Develop ESDRs of NH snow condirons for individual and integrated products Make the ESDRs available to the user community via the project website, deliver ESDRs to naronal data centers, and encourage their use.

4 Year s ac:vi:es.. Team meerng, NSIDC April 5-7 th AdaptaRon of EASE 2 grid, 100 km & 25 km Test data chunk to NSIDC by Dec 2011 NetCDF/CF convenrons template Established a POC within NSIDC, Donna Sco] Datasets documentaron, working with NSIDC s technical writers Website launched: h]p://climate.rutgers.edu/measures/snowice/

6 Blended Products

Greenland Surface and Near-Surface Melt Thomas Mote, University of Georgia MEaSUREs Project Development of NH Snow & Ice Climate Data Records (PI: David Robinson, Rutgers University)

Daily melt maps created on 25km polar stereographic and EASE2 grids.

7 Greenland Surface and Near-Surface Melt Thomas Mote, University of Georgia MEaSUREs Project Development of NH Snow & Ice Climate Data Records (PI: David Robinson, Rutgers University) Satellite-derived maps of Greenland surface and near-surface melt from SSM/I and SMMR passive microwave data using a dynamic threshold algorithm. Daily melt maps created on 25km polar stereographic and EASE2 grids. Above: Average melt extent in summer 2011 (green), 2010 (blue), 2007 (red), and the average (black) and standard deviation (shaded) for Left: Departure from average of melt duration (days) during Maximum departures exceeded 50 days in southwest Greenland. Relevance to NASA goals Contributes to our understanding of ice sheet mass balance and Greenland s contribution to global sea level change. Used to validate and improve ice sheet and surface mass balance models. Further information contact: tmote@uga.edu website: snowcover.org Impacts on MeASUREs Snow Project Used in conjunction with the Greenland Ice Surface Temperature (IST), we can delineate surface and nearsurface melt on the Greenland Ice Sheet. Science Application Our surface and near-surface melt product should lead to a better understanding of the variation in melt water available for runoff and ice sheet lubrication, as well as Greenland ice sheet response to regional climate change. MEaSURES TEAM: D. Robinson (Rutgers U), M. Anderson (U Nebraska), D. Hall (NASA GSFC), T. Mote (U Georgia), C. Fowler & J. Maslanik (U Colorado), S. Drobot (NCAR)

(IST) Also supports a NASA s MEaSUREs Project (David Robinson, PI) and a NOAA s CDR Project (J. Key, PI) MODIS IST maps of Greenland are daily and monthly, 6.

8 Greenland Ice-Surface Temperature (IST) Dorothy K. Hall, Cryospheric Sciences Branch, NASA/GSFC MEaSUREs Project The EOS Moderate-Resolution Imaging Spectroradiometer (MODIS) snow and ice project has developed maps of Greenland icesurface temperature (IST) Also supports a NASA s MEaSUREs Project (David Robinson, PI) and a NOAA s CDR Project (J. Key, PI) MODIS IST maps of Greenland are daily and monthly, 6.25-km resolution Sample meanmonthly icesurface temperature color-coded maps for July (left) and December (right) 2010 Relevance to NASA goals IST is a key component of the mass balance of the Greenland Ice Sheet, and is used to delineate surface-melt extent Increases our understanding of the complex relationship between surface melt and mass loss which leads to sea-level rise Further information contact: dorothy.k.hall@nasa.gov website: Impacts of IST maps on MeASUREs Snow Project Used in conjunction with passive-microwave melt maps, we can delineate both surface and near-surface melt on the Greenland Ice Sheet. Science Application The IST maps may be used to study surface temperature and melt trends that relate to regional climate warming and acceleration of outlet-glacier velocity leading to enhanced sea-level rise. MEaSURES TEAM: D. Robinson (Rutgers U), M. Anderson (U Nebraska), D. Hall (NASA GSFC), T. Mote (U Georgia), C. Fowler & J. Maslanik (U Colorado), S. Drobot (NCAR)

Sea Ice Age Depicts Fundamental Changes in Ice Cover Extreme loss of the oldest and thickest ice types since the 1990s Who/What/Where/When/Why MEaSUREs Project: Development of NH Snow

Project and Data: Merging of satellite (AVHRR, SMMR, SSM/I, AMSR-E) and International Arctic Buoy Program buoy data to calculate the number of years that sea ice survives in the Arctic.

) Relevance to NASA Contributes to basic understanding of the Arctic climate system. Used to help evaluate and improve sea ice and climate models.

org Time series and maps of ice age Impacts Describes fundamental changes in ice coverage from the 1980s onward, showing overall loss of the oldest ice types, with some recovery since

9 Sea Ice Age Depicts Fundamental Changes in Ice Cover Extreme loss of the oldest and thickest ice types since the 1990s Who/What/Where/When/Why MEaSUREs Project: Development of NH Snow & Ice Climate Data Records (Lead PI: D. Robinson, Rutgers Univ.; U. of Colorado PI: C. Fowler). Project and Data: Merging of satellite (AVHRR, SMMR, SSM/I, AMSR-E) and International Arctic Buoy Program buoy data to calculate the number of years that sea ice survives in the Arctic. Generated a 33-year data record of ice age current through Sept Provides a unique view of changes in key sea ice parameters related to age (thickness, type, salinity, etc.) Relevance to NASA Contributes to basic understanding of the Arctic climate system. Used to help evaluate and improve sea ice and climate models. Relevant for ice forecasting, shipping, coastal ice hazards, wildlife habitat. Further information contact: cfowler@colorado.edu Website: snowcover.org Time series and maps of ice age Impacts Describes fundamental changes in ice coverage from the 1980s onward, showing overall loss of the oldest ice types, with some recovery since Easily understandable forms and graphics that are effective at illustrating arctic change to the public. Science Application Analyses of sea ice trends, investigations of relationships to other parameters such as ice thickness and albedo, and climate model evaluation. Making Earth Science Data Records for Use in Research Environments MEaSUREs

Two New Snow Products: NASA MEaSUREs and MODIS Collec<on- 6 Snow Cover

Two New Snow Products: NASA MEaSUREs and MODIS Collec