The Monsoon Asia Integrated Regional Study (MAIRS) project at the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC) has integrated five global land products at 5.6km (0.05 Degree) resolution from into the NASA Giovanni system in support of the NASA Land Cover/Land Use Change program. These data products are Moderate Resolution Imaging Spectroradiometer (MODIS) standard products from the Land Processes Distributed Active Archive Center (LP DAAC).
The five data products are:
- MOD11C3.005: MODIS/Terra monthly land surface temperature, Collection 5
- MOD13C2.005: MODIS/Terra monthly vegetation index, Collection 5
- MOD11C2.005: MODIS/Terra 8-day land surface temperature, Collection 5
- MOD13C1.005: MODIS/Terra 16-day vegetation index, Collection 5
- MCD43C3.005: MODIS/Terra+Aqua 16-day Albedo, Collection 5
Giovanni portal for the monthly data:
Giovanni portal for 8-day and 16-day data:
These new products, combined with other land and atmospheric datasets in the Giovanni database, enable researchers to explore and quickly analyze regional surface conditions associated with climate variability. Such exploration can potentially lead to insights and strategies useful for the study of agricultural applications, and monitoring. The images shown in the following two sample cases are generated from the products listed above through the use of Giovanni.
Case 1: Extreme Warm Land Surface Temperature over Europe in Summer 2010
Extremely hot summer weather was reported in 2010 at many locations across Europe. These conditions caused health problems and huge economic losses. Land surface temperatures measured by MODIS reveals detailed spatial features of this abnormal event (Figure 1) which enable the study of regional climate variability. The entire continent of Europe in July 2010 was much warmer in comparison to July 2009.
Figure 1: Land surface temperature at 5.6km resolution from MODIS-Terra for July 2009 (left) and July 2010 (right). Land surface temperatures were considerably warmer in 2010 compared to 2009 in this region. Also note in these images of the 5.6 km resolution data how the colder mountain temperatures in the Alps and Carpathian Mountain Arc are clearly observed. Click on each image to view the full-size image.
Case 2: Drought over Southern Asia in Spring 2010
Precipitation was considerably below normal from winter 2009 through early spring 2010 over southern regions of Asia, as captured by the Tropical Rainfall Measuring Mission (TRMM) (Fig.2a). Accumulated precipitation was more than 70% below normal in some regions, which caused severe water shortage problems. MODIS observed that vegetation growth was weaker during the springtime of 2010 over the drought regions. Fig. 2b shows a time series of area mean Normalized Difference Vegetation Index (NDVI) from MODIS-Terra over the boxed area in Fig. 2a, indicating that vegetation greenness in spring 2010 was about 12% lower than in spring 2009. Spatial patterns of vegetation health in the boxed region in Fig. 2a are shown in Fig. 2c and Fig. 2d, using 5.6km resolution NDVI data. Compared to 2009, this region was significantly less green in March and April of 2010.
Figure 2: (a) Normalized precipitation anomaly observed from TRMM over southern Asia for the period November 2009 - March 2010. (b) Monthly mean time-series of MODIS NDVI averaged for the boxed area in Fig. 2a for 2010 (red line) and 2009 (green line). (c) MODIS NDVI images at 5.6km resolution for the boxed region in Fig. 2a in springtime (March and April) 2010. (d) MODIS NDVI images at 5.6km resolution for the boxed region in Fig. 2a in springtime (March and April) 2009. Click to see the images full-size.
Text and images by Dr. Suhung Shen; editorial assistance provided by James Acker.
The GES DISC is a NASA earth science data center, part of the NASA Earth Science Data and Information System (ESDIS) Project.