Presentation on theme: "Climate Perspectives (CLIMPER): A New Tool for Assessing the State of the Climate Across the Southeast U.S. Charles E. Konrad Southeast Regional Climate."— Presentation transcript:
1Climate Perspectives (CLIMPER): A New Tool for Assessing the State of the Climate Across the Southeast U.S.Charles E. Konrad Southeast Regional Climate Center & UNC Chapel HillRyan Boyles and John McGuire NC State Climate Office, NC State Univ.William Schmitz Southeast Regional Climate Center
2Climate Perspectives (CLIMPER) Talk Outline BackgroundDescription of CLIMPER’s features3. Current Work on CLIMPERCLIMPER:
31. BackgroundMuch recent attention directed towards climate variability and how ongoing, recent, or forecasted weather & climate extremes compare with the past.Many economic sectors have become more vulnerable to weather and climate extremes (e.g. agricultural, energy, water, transportation etc.).Hence a strong need to monitor the current state of the climate and compare it with the past.
4Background (continued) Climate Perspectives (CLIMPER) assesses ongoing and recent state of the climate across most weather stations in the SE US.CLIMPER provides a fluid perspective on the magnitude of temperature or precipitation anomalies across different time periods. It can also find the closest historical analogs to a given event.First prototype developed in late 1990’s using FORTRAN.First web-based, automated routine in mid-2000’sRe-design in late 2007 with NC State Climate Office providing expertise and software development.Various add ons, including maps as well as measures of thresholds/streaks, over the last year.
5Technical DetailsCLIMPER is powered by ACIS (Applied Climate Information System), which is maintained by the Regional Climate Centers (RCCs)PHP software utilizes MySQL databases containing ACIS dataRun in parallel across multiple machinesDatabase and Processor intensive (~30 min per run).To provide timely updates, CLIMPER runs 4 times/24 hours –10am & noon across all stations via ACIS data feed4pm at ASOS stations located near major cities2am at all ASOS stationsThe 4pm and 2am are updates based on preliminary METAR values obtained from a Unidata LDM. These values are recalculated when observations from these stations come in from ACIS.
13C. Streaks & ThresholdsPeriod thresholds – frequency of days in a given period in which temperature => or <= a given threshold.Streak thresholds – longest streak (i.e. consecutive days) in a given period in which temperature >= or <= a given threshold.Example: Period thresholds
163. Current Work Forecast Perspectives - Based on National Digital Forecast Database (NDFD)
173. Current Work B. Climate Perspectives expanded to the entire U.S. Example: Maximum temperature on June 30, 2010
183. Current Work B. Climate Perspectives expanded to the entire U.S. Example: Avg. maximum temperature for June 2010, expressed in percentiles
193. Current Work (continued) Challenges for current/future workComputational Expenses associated with:Expansion of Perspectives for the United StatesProcessing point data from forecast models per stationCustom or user defined thresholds and streaks per stationVisualization approach pushing limits of Google MapsClient-side mapping to allow for dynamic interactivityRendering entire U.S. station Perspectives may make older computers, browsers unstableClimate Perspectives: