Nathan J. L. Lenssen's research while affiliated with Columbia University and other places

Publications (2)

Article
The El Niño-Southern Oscillation (ENSO) is the dominant source of seasonal climate predictability. This study quantifies the historical impact of ENSO on seasonal precipitation through an update of the global ENSO teleconnection maps of Mason and Goddard (2001). Many additional teleconnections are detected due to better handling of missing values a...
Article
Full-text available
We outline a new and improved uncertainty analysis for the Goddard Institute for Space Studies Surface Temperature product version 4 (GISTEMP v4). Historical spatial variations in surface temperature anomalies are derived from historical weather station data and ocean data from ships, buoys, and other sensors. Uncertainties arise from measurement u...

Citations

... For instance, Rosenfeld (1999) observed a significant reduction of cloud droplet sizes over the island of Borneo based on TRMM data when clouds were downwind of biomass burning. The investigations of two recent field campaigns over the northern part of SEA by Lin et al. (2013) revealed the detailed chemical and radiative characteristics of fire particles, while their impacts on clouds remained to be clarified. Similarly, the review study by Tsay et al. (2013) summarized the observational findings of the characteristics and the seasonality of fire particles over Indochina. ...
... Based on the JRA-55 and ERA5 reanalysis products and Goddard Institute for Space Studies surface temperature (GISTEMP) observations (Lenssen et al., 2019), a strong early summer surface cooling trend can be seen in June during 2010-2020 ( Figure 1a). This significant cooling trend covers a large area of NEA between 45°N and 60°N and from 120°E to 150°E (Figure 1a), exhibiting a sharp contrast to the surrounding warming conditions over northern Russia and the midlatitude northwestern Pacific. Figure 1a shows the results derived from the JRA-55 reanalysis product. ...