1 / 18

Status of Continental Indicators for NADM

Status of Continental Indicators for NADM. Richard R. Heim Jr. NOAA/NESDIS/National Climatic Data Center Asheville, North Carolina North American Drought Monitor Forum Asheville, NC, USA – 20 April 2010. NADM History. November 2001 – “Troika” Meeting (US, CN, MX)

fancy
Download Presentation

Status of Continental Indicators for NADM

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Status of Continental Indicatorsfor NADM Richard R. Heim Jr. NOAA/NESDIS/National Climatic Data Center Asheville, North Carolina North American Drought Monitor Forum Asheville, NC, USA – 20 April 2010

  2. NADM History • November 2001 – “Troika” Meeting (US, CN, MX) • Agree in principle to establish climate extremes monitoring partnership (*) • First, develop monthly continental drought monitoring capabilities • Eventually assess long-term variability and trends in extremes (**) • April 2002 Workshop – Plans for NADM • One day devoted to discussion on the new drought monitoring program for North America • April 2003 – First experimental NADM map released to public • November 2003 – Addition of French and Spanish translations of map (** National Climate Preparedness & Potential IPCC Applications) (* NACEM)

  3. NADM Participant Responsibilities • Responsibilities & Procedure • Each country determines drought depiction & narrative within their national boundaries • NADM lead authorship rotates amongst the participants • US: NOAA (NCDC, CPC), USDA (JAWF), NDMC • Canada : AAFC, MSC • Mexico: SMN • NADM lead author integrates national drought assessments from each country, prepares continental monthly map & narrative • Continental indicators used for international boundaries • All participants peer review product http://www.ncdc.noaa.gov/oa/climate/monitoring/drought/nadm/index.html

  4. NADM Continental Drought Indicators • The NADM drought conditions in US, MX, CN are determined independently based on different data, indices, & analyses within each country • Drought indices covering entire continent are needed • Same indices, same analysis period, same methodologies • This consistency needed for depiction across international boundaries http://www.ncdc.noaa.gov/oa/climate/monitoring/drought/nadm/index.html

  5. NADM Continental Drought Indicators • NADM Drought Indicators data base: • Mexico: • Monthly precipitation from 132 highest quality stations • Temperature from 65 high quality Observatory stations, plus 67 add’l stations • Canada: Monthly precipitation and temperature from approx. 200-300 daily near-real time stations (DLY02) • U.S. • First set: • 20-24 Alaska ASOS stations & 8 COOP stations along US-MX border • Climate division data for contiguous U.S. • Second set: • 20-24 Alaska ASOS stations & 900-1000 contiguous U.S. COOP stations • Future: Climate Divisions for all 3 countries http://www.ncdc.noaa.gov/oa/climate/monitoring/drought/nadm/index.html

  6. Two Contiguous U.S. Data Sets Climate Divisions Stations

  7. NADM Continental Drought Indicators • For Percent of Average Precipitation (PCTPCP), Standardized Precipitation Index (SPI), & Palmer Drought Indices (PDI): • Period of record varies between countries and between stations within each country • Except p.o.r. is 1895-present for U.S. climate divisions • For the stations, p.o.r. generally begins in 1950 or earlier • Standardizing period is 1951-2001

  8. NADM Continental Drought Indicators • Other indicators from other sources are also used • NOAA/NESDIS Satellite Vegetation Health Index • NOAA/CPC Leaky Bucket Soil Moisture Percentiles

  9. NADM Continental Drought Indicators • Other indicators that could be used • University College London’s Global Drought Monitor

  10. Living Blended Paleo Drought Project • This project is intended to expand our historical perspective • Serially and spatially complete • But it will have an operational component that can be used to support the NADM • Station data network across U.S., Canada, & Mexico • 0.5 x 0.5 degree latitude/longitude grid, 11,398 gridpoints • Fine spatial resolution for continental monitoring • Will be updated operationally on a monthly basis 11,398

  11. LBPD  NADM Operational Support • The LBPD gridded data base can support: • NADM continental indicators (SPI, Palmer Indices, PCTPCP) • NADM Objective Blends • FMDI for North America

  12. Precipitation Climatologies for N. America • Percent of annual precipitation maps • Monthly, 3-Month Seasons, 6-Month Seasons

  13. USDM & NADM Objective Blends • Objective blends integrate multiple indicators into a product update using a percentile ranking method • All parameters are first rendered as percentiles with respect to a standard period using a percent rank method • The parameters (drought indicators) are then combined using a weighting scheme • Short- and Long-Term Blends produced • Need serially complete data • Operationally produced weekly for USDM using NOAA/CPC’s real-time daily and weekly climate division data and NOAA/NCDC’s monthly archive of indices for 1932-2000 • Experimental for NADM; monthly; use gridded temperature, precipitation, & Palmer index fields for North America; 1895-2005

  14. NADM Objective Blends USDM Objective Blends: • Similar to USDM Objective Blends, but with different components and possibly different weights • Would need serially complete data, so could not be computed on station data • But could be computed on LBPD Project’s gridded data base

  15. USDM Objective Blends

  16. NADM Objective Blends • NADM percentiles based on 1895-2005 • 0.5x0.5-degree gridded data base • Short-term blend components: • Palmer Z Index (35%) • 3-month precipitation (30%) • 1-month precipitation (25%) • Palmer Drought Index (10%) • Long-term blend components: • Palmer Hydrological Drought Index (30%) • 60-month Palmer Z Index (20%) • 60-month precipitation (20%) • 24-month precipitation (10%) • 12-month precipitation (10%) • 6-month precipitation (10%)

  17. NADM – Web Services • NADM web site – transitioning to interactive web site with GIS web services (within NIDIS Drought Portal environment) • NADM indicators – overlay and analysis with NADM map boundaries using various visualization tools • NADM indicator station, divisional, and gridded (from LBPD) data in relational data base for efficient access & analysis & interoperability between various projects & applications

  18. Thank You! Richard.Heim@noaa.gov NCDC Climate Monitoring Branch Reports & Products: http://www.ncdc.noaa.gov/oa/climate/research/monitoring.html NCDC State of the Climate Reports: http://www.ncdc.noaa.gov/sotc/ North America Drought Monitor: http://www.ncdc.noaa.gov/oa/climate/monitoring/drought/nadm/index.html U.S. Drought Monitor: http://drought.unl.edu/dm/monitor.html NIDIS: http://drought.gov/

More Related