HOME >> BIOLOGY >> NEWS
NASA data helps pinpoint wildfire threats

nts can be used to determine when conditions are favorable for wildfires.

"Improving the role of satellite data in wildfire prediction and monitoring through efforts like these is critical, since traditional field sampling is limited by high costs, and the number and frequency of sites you can sample," said Roberts. "This new data on the relative greenness of a landscape also allows us to see how conditions are changing compared to the past."

The satellite data worked best on landscapes where one plant type was dominant. The amount of vegetation cover in an area and its growth rate also influence the reliability of satellite data for wildfire prediction.

The study also found that in areas where branches and dead foliage often help spread fires, changes in the proportion of green vegetation to other plants may also indicate locations of potential fires, especially after moisture values fall below a critical level. The proportion of greenness determines the manner in which plants absorb and scatter sunlight and plays a major role in moisture retention.

Although scientists have long recognized the importance of moisture conditions in wildfire development, this research suggests that other variables may be just as significant. "While live fuel moisture values are critical in the development of wildfires, it's clearly not the last word. Even if vegetation is extremely dry, there are a number of other factors that influence whether a fire will develop and how quickly it spreads, including the ratio of live to dead foliage, plant type, seasonal precipitation, and weather conditions," said Roberts. "In Southern California, if a strong Santa Ana wind event occurs before our first major rainfall in the fall or winter, the risk for wildfire is significantly heightened."

As researchers continue to better understand wildfire development, they are also creating fire spread computer models that use wind speed and direction forecasts to determi
'"/>

Contact: Rob Gutro
robert.J.gutro@nasa.gov
301-286-4044
NASA/Goddard Space Flight Center
20-Dec-2006


Page: 1 2 3

Related biology news :

1. Genetic variation helps to understand predisposition to schizophrenia
2. Link between sunspots, rain helps predict disease in east Africa
3. Taking a supplement of glycine helps prevent degenerative diseases such as arthrosis or osteoporosis
4. Progesterone therapy and preterm birth: More evidence helps identify women who can benefit
5. Nanotechnology helps scientists make bendy sensors for hydrogen vehicles
6. Preconditioning helps protect brains blood vessels from stroke
7. Manchester University helps with pharaoh DNA analysis
8. A spoonful of sugar helps your waistline go down
9. Study helps preserve Arctic whale, Eskimo subsistence hunt
10. Ethanol injection helps manage bone metastasis in thyroid cancer patients
11. Fusing imaging technologies creates synergy, helps diagnose heart disease accurately

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: NASA data helps pinpoint wildfire threats

(Date:12/17/2014)... , Dec. 16, 2014 Valencell, a leader ... PerformTek biometric technology to industry leaders such as Intel, ... clinically validated, biometric wearable products. These products will be ... Las Vegas . ... accurate, flexible and robust – with the clinical data ...
(Date:12/11/2014)... Dec. 09, 2014 Research and Markets ... ( http://www.researchandmarkets.com/research/9ql3kr/biometrics_market ) has announced the ... 2015-2019" report to their offering. ... is the adoption of multimodal biometric systems. Multimodal ... an individual for verification and identification purposes. This ...
(Date:12/10/2014)... WINSTON-SALEM, N.C. , Dec. 9, 2014  Wake Forest ... medical education building for its School of Medicine. Funding ... a larger capital campaign that will be publicly launched ... will be located in the former 60 series R.J. ... Forest Innovation Quarter. Construction will begin immediately with plans ...
Breaking Biology News(10 mins):Valencell PerformTek Biometrics Power the Most Accurate Wearables at CES 2015 2Biometrics Market in India 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 2Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 3Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 4
(Date:12/19/2014)... December 18, 2014 With only 2 ... special on Sartorius Biohit products . The product ... pipettes, Picus Electronic Pipette Trade-in Program, and free pipette ... Safety officers around the world. They are ideal for ... features include:, ,     Full volume range of ...
(Date:12/19/2014)... Egenix, Inc. is pleased to announce that Lionel Goldfrank ... succeed Donald Fresne ; Mr. Fresne has also resigned ... of the Board.  In recognition of the many contributions and ... twenty years, the Board designated Mr. Fresne as Chairman Emeritus. ... Search Committee to find a suitable replacement with Biotech industry ...
(Date:12/19/2014)... -- Relmada Therapeutics, Inc. (OTCQB: RLMD), a clinical-stage company ... announced the results of its annual general meeting of ... year in Relmada,s history and it set the stage ... Sergio Traversa , chief executive officer of Relmada. "Over ... human resource and clinical development objectives that position Relmada ...
(Date:12/17/2014)... December 17, 2014 Based on ... overall surgical imaging market is dominated by four ... surgical imaging market. These players include GE Healthcare ... Imaging (Germany). , Full Report Copy at ... GE Healthcare can be attributed to its strong ...
Breaking Biology Technology:Major Pipette Distributor Pipette.com Announces Sartorius Year End Specials 2Relmada Therapeutics Announces Results of Annual Shareholders Meeting 2Global Refurbished Surgical Imaging Market by Product & Application is Estimated to Reach $1.25 Billion by 2019 - New Research Report by MarketsandMarkets 2Global Refurbished Surgical Imaging Market by Product & Application is Estimated to Reach $1.25 Billion by 2019 - New Research Report by MarketsandMarkets 3Global Refurbished Surgical Imaging Market by Product & Application is Estimated to Reach $1.25 Billion by 2019 - New Research Report by MarketsandMarkets 4
Cached News: