Igor Appel

1.3k total citations · 1 hit paper
7 papers, 941 citations indexed

About

Igor Appel is a scholar working on Atmospheric Science, Aerospace Engineering and Water Science and Technology. According to data from OpenAlex, Igor Appel has authored 7 papers receiving a total of 941 indexed citations (citations by other indexed papers that have themselves been cited), including 7 papers in Atmospheric Science, 1 paper in Aerospace Engineering and 1 paper in Water Science and Technology. Recurrent topics in Igor Appel's work include Cryospheric studies and observations (7 papers), Climate change and permafrost (6 papers) and Arctic and Antarctic ice dynamics (6 papers). Igor Appel is often cited by papers focused on Cryospheric studies and observations (7 papers), Climate change and permafrost (6 papers) and Arctic and Antarctic ice dynamics (6 papers). Igor Appel collaborates with scholars based in United States. Igor Appel's co-authors include V. V. Salomonson, V. V. Salomonson, Stephen J. Déry, Dorothy K. Hall, Marc Stieglitz, Xuanji Wang, Robert Mahoney, Mark Tschudi, Paul E. Meade and Jeffrey R. Key and has published in prestigious journals such as Remote Sensing of Environment, IEEE Transactions on Geoscience and Remote Sensing and Hydrological Processes.

In The Last Decade

Igor Appel

7 papers receiving 902 citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Estimating fractional snow cover from MODIS using the normalized difference snow index

2004 561 citations V. V. Salomonson, Igor Appel Remote Sensing of Environment profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Igor Appel United States	5	827	266	158	130	114	7	941
V. D. Mishra India	15	544 0.7×	154 0.6×	96 0.6×	64 0.5×	71 0.6×	42	638
Sari Metsämäki Finland	17	753 0.9×	209 0.8×	214 1.4×	69 0.5×	111 1.0×	58	887
Kathrin Naegeli Switzerland	14	519 0.6×	127 0.5×	40 0.3×	41 0.3×	90 0.8×	33	612
Rune Solberg Norway	8	351 0.4×	95 0.4×	108 0.7×	35 0.3×	69 0.6×	30	552
Ankur Pandit India	10	668 0.8×	99 0.4×	57 0.4×	46 0.4×	58 0.5×	31	760
Matthew G. Cooper United States	13	398 0.5×	171 0.6×	59 0.4×	96 0.7×	65 0.6×	28	517
Sharad Joshi Nepal	14	949 1.1×	181 0.7×	36 0.2×	128 1.0×	40 0.4×	22	1.1k
Aparna Shukla India	19	1.1k 1.3×	118 0.4×	55 0.3×	55 0.4×	42 0.4×	41	1.2k
B. P. Rathore India	15	856 1.0×	131 0.5×	37 0.2×	88 0.7×	21 0.2×	34	913
Purushottam Kumar Garg India	14	547 0.7×	102 0.4×	55 0.3×	56 0.4×	50 0.4×	36	676

Countries citing papers authored by Igor Appel

Since Specialization

Citations

This map shows the geographic impact of Igor Appel's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Igor Appel with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Igor Appel more than expected).

Fields of papers citing papers by Igor Appel

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Igor Appel. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Igor Appel. The network helps show where Igor Appel may publish in the future.

Co-authorship network of co-authors of Igor Appel

This figure shows the co-authorship network connecting the top 25 collaborators of Igor Appel. A scholar is included among the top collaborators of Igor Appel based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Igor Appel. Igor Appel is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

7 of 7 papers shown

1.

Appel, Igor. (2018). Uncertainty in satellite remote sensing of snow fraction for water resources management. Frontiers of Earth Science. 12(4). 711–727. 12 indexed citations

2.

Appel, Igor. (2016). Enhancing calculation of thin sea ice growth. Polar Science. 10(4). 553–563. 3 indexed citations

3.

Key, Jeffrey R., Robert Mahoney, Yinghui Liu, et al.. (2013). Snow and ice products from Suomi NPP VIIRS. Journal of Geophysical Research Atmospheres. 118(23). 51 indexed citations

4.

Salomonson, V. V. & Igor Appel. (2006). Development of the Aqua MODIS NDSI fractional snow cover algorithm and validation results. IEEE Transactions on Geoscience and Remote Sensing. 44(7). 1747–1756. 232 indexed citations

5.

Déry, Stephen J., V. V. Salomonson, Marc Stieglitz, Dorothy K. Hall, & Igor Appel. (2005). An approach to using snow areal depletion curves inferred from MODIS and its application to land surface modelling in Alaska. Hydrological Processes. 19(14). 2755–2774. 78 indexed citations

6.

Salomonson, V. V. & Igor Appel. (2004). Estimating fractional snow cover from MODIS using the normalized difference snow index. Remote Sensing of Environment. 89(3). 351–360. 561 indexed citations breakdown →

7.

Appel, Igor & V. V. Salomonson. (2003). Estimate of fractional snow cover using MODIS data. 5. 3044–3046. 4 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

Explore authors with similar magnitude of impact